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Large-Scale Channel Erosion Testing
(ASTM D 6460)
of
Ero-Guard, Inc.
EG-2S, Double Net Straw Blanket
over
Sandy Loam
June 2010
Submitted to:
AASHTO/NTPEP
444 North Capitol Street, NW, Suite 249
Washington, D.C. 20001
Attn: Keith Platte, NTPEP
Submitted by:
TRI/Environmental, Inc.
9063 Bee Caves Road
Austin, TX 78733
C. Joel Sprague
Project Manager
June 30, 2010
Mr. Keith Platte AASHTO/NTPEP
444 North Capitol Street, NW, Suite 249
Washington, D.C. 20001
E-mail: [email protected]
Subject: Channel Testing of Testing over Sandy Loam of Ero-Guard EG-2S, Double Net Straw
Blanket, manufactured in Mapleton, MN.
Dear Mr. Platte:
This letter report presents the results for large-scale channel erosion tests performed on EG-2S,
Double Net Straw Blanket, over Sandy loam. Included are data developed for target hydraulic
shears ranging from 0.5 to 3+ psf (0.02 to 0.15+ kPa). All testing work was performed in
general accordance with the ASTM D 6460, Standard Test Method for Determination of Rolled
Erosion Control Product (RECP) Performance in Protecting Earthen Channels from
Stormwater-Induced Erosion. Generated results were used to develop the following permissible
or limiting shear (τlimit) and limiting velocity (Vlimit) for the tested material:
τlimit EG-2S & 3.8 staples/sy = 2.08 psf Vlimit EG-2S & 3.8 pins/sy = 8.7 ft/sec
TRI is pleased to present this final report. Please feel free to call if we can answer any questions
or provide any additional information.
Sincerely,
C. Joel Sprague, P.E.
Senior Engineer
Geosynthetics Services Division
Cc: Sam Allen, Jarrett Nelson - TRI
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 3
CHANNEL TESTING REPORT
EG-2S, Double Net Straw Blanket, over Sandy loam
TESTING EQUIPMENT AND PROCEDURES
Overview of Test and Apparatus
TRI/Environmental, Inc.'s (TRI's) large-scale channel erosion testing facility is located at the
Denver Downs Research Farm in Anderson, SC. Testing oversight is provided by C. Joel
Sprague, P.E. The large-scale testing is performed in a rectangular flume having a 10% slope
using a loamy soil test section. The concentrated flow is produced by raising gates to allow
gravity flow from an adjacent pond. At least four sequential, increasing flows are applied to
each test section for 30 minutes each to achieve a range of hydraulic shear stresses in order to
define the permissible, or limiting, shear stress, τlimit, which is the shear stress necessary to cause
an average of 0.5 inch of soil loss over the entire channel bottom. Testing is performed in
accordance with ASTM D 6460 protocol. Tables and graphs of shear versus soil loss are
generated from the accumulated data.
Rolled Erosion Control Product (RECP)
The following information and index properties were determined from the supplied product.
Table 1. Tested Product Information & Index Properties
Product Information and Index Property / Test Units Sampled Product
Product Identification - EG-2S
Manufacturer - Ero-Guard, Inc
Manufacturing Plant Location - Mapleton, MN
Lot number of sample - 31010
Fiber - Straw
Netting Openings in 0.5 x 0.5 (approx)
Stitching Spacing in 1.5 (approx)
Tensile Strength MD x XD (ASTM D 6818) lb/in 11.9 x 7.6
Tensile Elongation MD x XD (ASTM D 6818) % 33.2 x 37.5
Thickness (ASTM D 6525) mils 332
Light Penetration (ASTM D 6567) % cover 63.6
Water Absorption (ASTM D 1117 & ECTC-TASC 00197) % Wt Change 218
Mass / Unit Area (ASTM D 6475) oz/sy 6.22
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 4
Test Soil
The test soil used in the test plots had the following characteristics.
Table 2. TRI-Loam Characteristics
Soil Characteristic Test Method Value
% Gravel
ASTM D 422
0
% Sand 45
% Silt 35
% Clay 20
Liquid Limit, % ASTM D 4318
41
Plasticity Index, % 8
Soil Classification USDA Loam
Soil Classification USCS Sandy silty clay (ML-CL)
Preparation of the Test Channels
The initial channel soil veneer (12-inch thick minimum) is placed and compacted. Compaction is
verified to be 90% (± 3%) of Proctor Standard density using ASTM D 698 (sand cone method).
The test channels undergo a “standard” preparation procedure prior to each test. First, any rills
or depressions resulting from previous testing are filled in with test soil. The soil surface is
replaced to a depth of 1 inch and groomed to create a channel bottom that is level side-to-side
and at a smooth 10% slope top-to-bottom. Finally, a vibrating plate compactor is run over the
renewed channel surface. The submitted erosion control product is then installed using the
anchors and anchorage pattern directed by the client.
Installation of Erosion Control Product in Test Channel
As noted, the submitted erosion control product is installed as directed by the client. For the
tests reported herein, the erosion control product was anchored using a “diamond” anchorage
pattern consisting of 1”x 6” steel staples to create an anchorage density of approximately 3.8
anchors per square yard.
Specific Test Procedure
Immediately prior to testing, the initial soil surface elevation readings are made at predetermined
cross-sections. The channel is then exposed to sequential 30-minute flows having typical target
hydraulic shear stresses of at least 0.5, 1.0, 1.5, and 2 psf. During the testing, flow depth and
corresponding flow velocity measurements are taken at the predetermined cross-section
locations. Between flow events, the flow is stopped and soil surface elevation measurements are
made to facilitate calculation of soil loss. Flows are then increased to achieve the subsequent
shear target in an attempt to create more than 0.5 inches of soil loss. Pictures of channel flows
and resulting soil loss are shown in Figures 6 thru 13.
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 5
Figure 1. Flumes Setup (typical)
Figure 2. Flow Velocity Measurement in
Channel (typical)
Figure 3. Channel Flow Depth
Measurement (typical)
Figure 4. Soil Loss Measurement in
Channel (typical)
Figure 5. Low Flow in Channels
Figure 6. Medium Flows in Channel
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 6
Figure 7. Close-up of Medium Flow
Figure 8. Close-up of High Flow
Figure 9. Very High Flow in Channels
Figure 10. Channel 1 After RECP Removed
Figure 11. Channel 2 After RECP Removed
Figure 12. Channel 3 After RECP Removed
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 7
TEST RESULTS
Average soil loss and the associated hydraulic shear calculated from flow and depth
measurements made during the testing are the principle data used to determine the performance
of the product tested. This data is entered into a spreadsheet that transforms the flow depth and
velocity into an hydraulic shear stress and the soil loss measurements into an average Clopper
Soil Loss Index (CSLI). A graph of shear versus soil loss for the protected condition is shown in
Figure 13. The associated velocities and roughness are plotted in Figures 14 and 15,
respectively. The graphs include the best regression line fit to the test data to facilitate a
determination of the limiting shear stress, τlimit,, and limiting velocity, Vlimit,. Linear (R2=0.76),
power (R2=0.79), exponential (R
2=0.74), and polynomial (R
2=0.74) fits were evaluated.
Table 3. Summary Data Table – Protected Test Reach
Test #
(Channel # -
Shear Level)
Flow
depth
(in)
Flow
velocity
(fps)
Flow
(cfs)
Manning’s
roughness,
n
Max Bed
Shear
Stress
(psf)
Cumm.
CSLI
(in)
C1-S1 0.99 2.14 0.35 0.044 0.52 -0.13
C1-S2 1.99 4.32 1.43 0.033 1.03 -0.30
C1-S3 2.94 6.45 3.17 0.029 1.53 -0.28
C1-S5 4.02 8.45 5.66 0.027 2.09 -0.50
C2-S1 1.01 2.14 0.36 0.044 0.52 -0.14
C2-S2 2.00 4.41 1.47 0.032 1.04 -0.37
C2-S3 3.03 6.86 3.46 0.027 1.57 -0.52
C2-S5 3.83 8.64 5.51 0.026 1.99 -0.60
C3-S1 1.01 2.05 0.34 0.046 0.53 -0.10
C3-S2 2.00 4.41 1.47 0.032 1.04 -0.16
C3-S3 3.05 6.73 3.41 0.028 1.58 -0.25
C3-S5 4.12 8.59 5.89 0.027 2.14 -0.50
Using the test procedure and data evaluation technique described herein, the limiting shear stress
shown in Table 4 was determined using the following equation:
τlimit, = γ d S
where: τlimit, = limiting shear stress;
γ = unit weight of water, 62.4pcf;
d = depth of water, ft
S = channel slope, 0.10
Table 4. Overall C-Factor
Product Limiting Shear, τlimit Limiting Velocity, Vlimit
EG-2S & 3.8 staples/sy 2.08 psf 8.7 ft/sec
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 8
Figure 13. Shear Stress vs. Soil Loss – Tested Product
Figure 14. Velocity vs. Soil Loss – Tested Product
y = 0.2361x1.0223
R² = 0.7855
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.20 2.40 2.60 2.80 3.00
Cu
mm
ula
tive
So
il L
oss (
CS
LI)
, in
Shear, psf
Limiting Shear via ASTM D 6460EG-2S, 3.8 staples/sy
Channel 1 Channel 2 Channel 3 All Channels Power (All Channels)
Limiting Shear = 2.08 psf
y = 0.0565x1.0032
R² = 0.7963
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.00 2.00 4.00 6.00 8.00 10.00
Cu
mm
ula
tive
So
il L
oss (
CS
LI)
, in
Velocity, ft/sec
Limiting Velocity via ASTM D 6460
EG-2S, 3.8 staples/sy
Channel 1 Channel 2 Channel 3 All Channels Power (All Channels)
Limiting Velocity = 8.7 ft/sec
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 9
Figure 15. Flow Depth vs. Manning’s “n” – Tested Product
Figure 16. Energy Grade Lines – All Channels, All Shears – Tested Product
y = -0.0006x3 + 0.0071x2 - 0.0292x + 0.0675R² = 0.9901
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
0.00 1.00 2.00 3.00 4.00 5.00
Man
nin
g's
n
Water Depth, in
Manning's n vs. Water DepthEG-2S, 3.8 staples/sy
Channel 1 Channel 2 Channel 3 All Channels Poly. (All Channels)
195.00
196.00
197.00
198.00
199.00
0 2 4 6 8 10 12 14 16 18 20
Ele
vati
on
Rela
tive t
o B
en
ch
mark
, ft
X-Section (ft along test reach)
Energy Grade Lines - All Shear Levels
Shear Level 4
Shear Level 3
Shear Level 2
Shear Level 1
Channel 1
Channel 2
Channel 3
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Page 10
Figure 17. Shear Stress vs. Soil Loss – Soil Only
CONCLUSIONS
Rectangular channel (flume) tests were performed in accordance with ASTM D 6460 using
sandy loam soil protected with an RECP. Testing in a rectangular (vertical wall) channel was
conducted to achieve increasing shear levels in an attempt to cause at least 0.5-inch of soil loss.
Figure 13 shows the maximum bottom shear stress and associated soil loss from each flow event.
Figure 14 presents the velocity versus soil loss. Figure 15 relates channel liner roughness
(Manning’s “n”) to flow depth. Together, this data provides a quantitative estimate of the
performance characteristics of the tested RECP.
The data in Figure 16 and 17, the calculated energy grade lines for each channel and shear level
and the soil-only shear stress vs. soil loss relationship, are included to provide a reference for the
reported test results.
Limiting Shear via ASTM D 6460
DDRF Loam Soil
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
0.00 0.05 0.10 0.15 0.20 0.25
Shear, psf
Cum
mu
lative
So
il L
oss (
CS
LI)
, in
Channel 1 Poly. (Channel 1)
Limiting Shear = 0.14 psf
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Appendix
APPENDIX A – RECORDED DATA
Test Record Sheets
1 - 1
Date: 6/29/10 Start Time: 11:45 AM End Time: 12:15 PM
Soil: Loam Target Shear (psf): 0.50 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Outlet Weir Weir Channel Targets
Water Depth, in 1.00 1.00
Weir width (ft) = 2 Water Velocity, ft/s 2.00 2.00
0 ft A B C Flow Rate, cfs 0.00 0.33 0.00 0.33
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.8 52.4 52.2 1.5 49.7
To eroded Surface Elev, cm 52.7 52.5 52.5 Vavg (fps) = 1.50
Soil Loss / Gain, cm 0.1 -0.1 -0.3 navg = 0.065
Clopper Soil Loss, cm 0 -0.1 -0.3 Flow (cfs) = 0.28 0.59 1.13
2 ft Avg Bottom Loss/Gain, in -0.04 Avg Clopper Soil Loss, in -0.05
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.5 52.2 52.5 1.5 50.0
To eroded Surface Elev, cm 52.7 52.5 52.7 Vavg (fps) = 1.50
Soil Loss / Gain, cm -0.2 -0.3 -0.2 navg = 0.061
Clopper Soil Loss, cm -0.2 -0.3 -0.2 Flow (cfs) = 0.26 0.54 1.04
4 ft Avg Bottom Loss/Gain, in -0.09 Avg Clopper Soil Loss, in -0.09
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54 53.5 1.5 51.1
To eroded Surface Elev, cm 54.1 54.1 53.4 Vavg (fps) = 1.50
Soil Loss / Gain, cm 0.1 -0.1 0.1 navg = 0.063
Clopper Soil Loss, cm 0 -0.1 0 Flow (cfs) = 0.27 0.57 1.09
6 ft 25.5Avg Bottom Loss/Gain, in 0.01 Avg Clopper Soil Loss, in -0.01
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53 54.2 53.5 2 51.7
To eroded Surface Elev, cm 53.5 55 53.5 Vavg (fps) = 2.00
Soil Loss / Gain, cm -0.5 -0.8 0 navg = 0.042
Clopper Soil Loss, cm -0.5 -0.8 0 Flow (cfs) = 0.30 0.47 0.91
8 ft Avg Bottom Loss/Gain, in -0.17 Avg Clopper Soil Loss, in -0.17
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.8 54 51.5 2 52.2
To eroded Surface Elev, cm 56.2 54.8 52.5 Vavg (fps) = 2.00
Soil Loss / Gain, cm -1.4 -0.8 -1 navg = 0.042
Clopper Soil Loss, cm -1.4 -0.8 -1 Flow (cfs) = 0.30 0.47 0.91
10 ft Avg Bottom Loss/Gain, in -0.42 Avg Clopper Soil Loss, in -0.42
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54.1 53.9 2.5 52.1
To eroded Surface Elev, cm 55 54.6 55 Vavg (fps) = 2.50
Soil Loss / Gain, cm -0.8 -0.5 -1.1 navg = 0.038
Clopper Soil Loss, cm -0.8 -0.5 -1.1 Flow (cfs) = 0.45 0.57 1.09
12 ft Avg Bottom Loss/Gain, in -0.31 Avg Clopper Soil Loss, in -0.31
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 52.7 2.5 51.9
To eroded Surface Elev, cm 54.5 54.5 53 Vavg (fps) = 2.50
Soil Loss / Gain, cm 0 -0.5 -0.3 navg = 0.032
Clopper Soil Loss, cm 0 -0.5 -0.3 Flow (cfs) = 0.34 0.43 0.83
14 ft Avg Bottom Loss/Gain, in -0.10 Avg Clopper Soil Loss, in -0.10
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55 54.2 53.5 2.5 51.2
To eroded Surface Elev, cm 55 54.5 52.8 Vavg (fps) = 2.50
Soil Loss / Gain, cm 0 -0.3 0.7 navg = 0.039
Clopper Soil Loss, cm 0 -0.3 0 Flow (cfs) = 0.48 0.59 1.14
16 ft Avg Bottom Loss/Gain, in 0.05 Avg Clopper Soil Loss, in -0.04
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 53.6 2.5 51.9
To eroded Surface Elev, cm 55 54.5 54 Vavg (fps) = 2.50
Soil Loss / Gain, cm -0.5 0 -0.4 navg = 0.036
Clopper Soil Loss, cm -0.5 0 -0.4 Flow (cfs) = 0.43 0.53 1.02
18 ft Avg Bottom Loss/Gain, in -0.12 Avg Clopper Soil Loss, in -0.12
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 55.4 55.7 2.5 52.8
To eroded Surface Elev, cm 54.7 55.5 56.1 Vavg (fps) = 2.50
Soil Loss / Gain, cm 0.5 -0.1 -0.4 navg = 0.037
Clopper Soil Loss, cm 0 -0.1 -0.4 Flow (cfs) = 0.43 0.54 1.04
20 ft Avg Bottom Loss/Gain, in 0.00 Avg Clopper Soil Loss, in -0.07
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.4 58.1 57 2.5 55.5
To eroded Surface Elev, cm 57.8 56.8 57.5 Vavg (fps) = 2.50
Soil Loss / Gain, cm 0.6 1.3 -0.5 navg = 0.029
Clopper Soil Loss, cm 0 0 -0.5 Flow (cfs) = 0.31 0.38 0.73
Avg Bottom Loss/Gain, in 0.18 Avg Clopper Soil Loss, in -0.07
Soil Loss / Gain, in -0.08 -0.08 -0.12 Avg Bottom Loss/Gain per Cross-Section = -0.09
Clopper Soil Loss, in -0.12 -0.13 -0.15 Avg Clopper Soil Loss per Cross-Section = -0.13
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf)
CHANNEL 1 - SHEAR STRESS 1
TEST DATA
Bed Max Shear Stress
(psf) Water Depth (in)
FLOW
2
EG-2S 3.8 staples / sy
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
1 - 2
Date: 6/29/10 Start Time: 12:30 PM End Time: 1:00 PM
Soil: Loam Target Shear (psf): 1.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
1500 rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 2.50 2.00
Weir width (ft) = 2 Water Velocity, ft/s 3.60 4.50
0 ft A B C Flow Rate, cfs 0.00 1.50 0.00 1.50
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.8 52.4 52.2 3.5 47.0
To eroded Surface Elev, cm 52.8 52.2 52.3 Vavg (fps) = 3.50
Soil Loss / Gain, cm 0 0.2 -0.1 navg = 0.043
Clopper Soil Loss, cm 0 0 -0.1 Flow (cfs) = 1.25 1.11 2.14
2 ft Avg Bottom Loss/Gain, in 0.01 Avg Clopper Soil Loss, in -0.01
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.5 52.2 52.5 4 47.6
To eroded Surface Elev, cm 53 52.5 52.7 Vavg (fps) = 4.00
Soil Loss / Gain, cm -0.5 -0.3 -0.2 navg = 0.036
Clopper Soil Loss, cm -0.5 -0.3 -0.2 Flow (cfs) = 1.35 1.05 2.02
4 ft Avg Bottom Loss/Gain, in -0.13 Avg Clopper Soil Loss, in -0.13
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54 53.5 4 48.9
To eroded Surface Elev, cm 54.5 54.5 53.5 Vavg (fps) = 4.00
Soil Loss / Gain, cm -0.3 -0.5 0 navg = 0.036
Clopper Soil Loss, cm -0.3 -0.5 0 Flow (cfs) = 1.38 1.08 2.07
6 ft Avg Bottom Loss/Gain, in -0.10 Avg Clopper Soil Loss, in -0.10
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53 54.2 53.5 4.5 49.6
To eroded Surface Elev, cm 55 55.7 54 Vavg (fps) = 4.50
Soil Loss / Gain, cm -2 -1.5 -0.5 navg = 0.033
Clopper Soil Loss, cm -2 -1.5 -0.5 Flow (cfs) = 1.56 1.08 2.09
8 ft Avg Bottom Loss/Gain, in -0.52 Avg Clopper Soil Loss, in -0.52
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.8 54 51.5 4.5 49.9
To eroded Surface Elev, cm 58.2 55.3 52.5 Vavg (fps) = 4.50
Soil Loss / Gain, cm -3.4 -1.3 -1 navg = 0.033
Clopper Soil Loss, cm -3.4 -1.3 -1 Flow (cfs) = 1.60 1.11 2.14
10 ft Avg Bottom Loss/Gain, in -0.75 Avg Clopper Soil Loss, in -0.75
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54.1 53.9 4.5 50.5
To eroded Surface Elev, cm 55.7 55.5 55.3 Vavg (fps) = 4.50
Soil Loss / Gain, cm -1.5 -1.4 -1.4 navg = 0.031
Clopper Soil Loss, cm -1.5 -1.4 -1.4 Flow (cfs) = 1.48 1.02 1.97
12 ft Avg Bottom Loss/Gain, in -0.56 Avg Clopper Soil Loss, in -0.56
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 52.7 4.5 48.9
To eroded Surface Elev, cm 54.5 53.5 53.5 Vavg (fps) = 4.50
Soil Loss / Gain, cm 0 0.5 -0.8 navg = 0.031
Clopper Soil Loss, cm 0 0 -0.8 Flow (cfs) = 1.46 1.01 1.94
14 ft Avg Bottom Loss/Gain, in -0.04 Avg Clopper Soil Loss, in -0.10
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55 54.2 53.5 4.5 49.1
To eroded Surface Elev, cm 55.5 53.8 52.6 Vavg (fps) = 4.50
Soil Loss / Gain, cm -0.5 0.4 0.9 navg = 0.031
Clopper Soil Loss, cm -0.5 0 0 Flow (cfs) = 1.44 0.99 1.92
16 ft Avg Bottom Loss/Gain, in 0.10 Avg Clopper Soil Loss, in -0.07
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 53.6 4.5 50.0
To eroded Surface Elev, cm 55.8 55 53.6 Vavg (fps) = 4.50
Soil Loss / Gain, cm -1.3 -0.5 0 navg = 0.030
Clopper Soil Loss, cm -1.3 -0.5 0 Flow (cfs) = 1.42 0.98 1.89
18 ft Avg Bottom Loss/Gain, in -0.24 Avg Clopper Soil Loss, in -0.24
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 55.4 55.7 4.5 52.0
To eroded Surface Elev, cm 57 56 58 Vavg (fps) = 4.50
Soil Loss / Gain, cm -1.8 -0.6 -2.3 navg = 0.031
Clopper Soil Loss, cm -1.8 -0.6 -2.3 Flow (cfs) = 1.48 1.02 1.97
20 ft Avg Bottom Loss/Gain, in -0.62 Avg Clopper Soil Loss, in -0.62
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.4 58.1 57 4.5 54.0
To eroded Surface Elev, cm 59 59 57 Vavg (fps) = 4.50
Soil Loss / Gain, cm -0.6 -0.9 0 navg = 0.028
Clopper Soil Loss, cm -0.6 -0.9 0 Flow (cfs) = 1.28 0.89 1.71
Avg Bottom Loss/Gain, in -0.20 Avg Clopper Soil Loss, in -0.20
Soil Loss / Gain, in -0.43 -0.21 -0.19 Avg Bottom Loss/Gain per Cross-Section = -0.28
Clopper Soil Loss, in -0.43 -0.25 -0.23 Avg Clopper Soil Loss per Cross-Section = -0.30
Bed Max Shear Stress
(psf) Water Depth (in)
CHANNEL 1 - SHEAR STRESS 2
TEST DATA
FLOW
2
EG-2S 3.8 staples / sy
Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
1 - 3
Date: 6/29/10 Start Time: 1:30 PM End Time: 2:00 PM
Soil: Loam Target Shear (psf): 3.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 4.00 3.00
Weir width (ft) = 2 Water Velocity, ft/s 5.00 6.67
0 ft A B C Flow Rate, cfs 0.00 3.33 0.00 3.33
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.8 52.4 52.2 6 44.5
To eroded Surface Elev, cm 53 52.2 52 Vavg (fps) = 6.00
Soil Loss / Gain, cm -0.2 0.2 0.2 navg = 0.032
Clopper Soil Loss, cm -0.2 0 0 Flow (cfs) = 3.11 1.61 3.11
2 ft Avg Bottom Loss/Gain, in 0.03 Avg Clopper Soil Loss, in -0.03
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.5 52.2 52.5 6.5 45.5
To eroded Surface Elev, cm 53 52.5 52.7 Vavg (fps) = 6.50
Soil Loss / Gain, cm -0.5 -0.3 -0.2 navg = 0.028
Clopper Soil Loss, cm -0.5 -0.3 -0.2 Flow (cfs) = 3.09 1.48 2.85
4 ft Avg Bottom Loss/Gain, in -0.13 Avg Clopper Soil Loss, in -0.13
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54 53.5 6.5 46.7
To eroded Surface Elev, cm 55 54.2 53.1 Vavg (fps) = 6.50
Soil Loss / Gain, cm -0.8 -0.2 0.4 navg = 0.028
Clopper Soil Loss, cm -0.8 -0.2 0 Flow (cfs) = 3.16 1.51 2.91
6 ft Avg Bottom Loss/Gain, in -0.08 Avg Clopper Soil Loss, in -0.13
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53 54.2 53.5 6.5 48.0
To eroded Surface Elev, cm 56.8 55 54.3 Vavg (fps) = 6.50
Soil Loss / Gain, cm -3.8 -0.8 -0.8 navg = 0.028
Clopper Soil Loss, cm -3.8 -0.8 -0.8 Flow (cfs) = 3.14 1.51 2.90
8 ft Avg Bottom Loss/Gain, in -0.71 Avg Clopper Soil Loss, in -0.71
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.8 54 51.5 6.5 48.0
To eroded Surface Elev, cm 56 55 55.1 Vavg (fps) = 6.50
Soil Loss / Gain, cm -1.2 -1 -3.6 navg = 0.028
Clopper Soil Loss, cm -1.2 -1 -3.6 Flow (cfs) = 3.14 1.51 2.90
10 ft Avg Bottom Loss/Gain, in -0.76 Avg Clopper Soil Loss, in -0.76
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54.1 53.9 6.5 46.8
To eroded Surface Elev, cm 55.1 54.5 54.5 Vavg (fps) = 6.50
Soil Loss / Gain, cm -0.9 -0.4 -0.6 navg = 0.029
Clopper Soil Loss, cm -0.9 -0.4 -0.6 Flow (cfs) = 3.37 1.61 3.11
12 ft Avg Bottom Loss/Gain, in -0.25 Avg Clopper Soil Loss, in -0.25
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 52.7 6.5 46.5
To eroded Surface Elev, cm 54.1 54 53.5 Vavg (fps) = 6.50
Soil Loss / Gain, cm 0.4 0 -0.8 navg = 0.028
Clopper Soil Loss, cm 0 0 -0.8 Flow (cfs) = 3.14 1.51 2.90
14 ft Avg Bottom Loss/Gain, in -0.05 Avg Clopper Soil Loss, in -0.10
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55 54.2 53.5 6.5 46.3
To eroded Surface Elev, cm 54 53.5 53.6 Vavg (fps) = 6.50
Soil Loss / Gain, cm 1 0.7 -0.1 navg = 0.028
Clopper Soil Loss, cm 0 0 -0.1 Flow (cfs) = 3.16 1.51 2.91
16 ft Avg Bottom Loss/Gain, in 0.21 Avg Clopper Soil Loss, in -0.01
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 53.6 6.5 48.5
To eroded Surface Elev, cm 56 56.1 55 Vavg (fps) = 6.50
Soil Loss / Gain, cm -1.5 -1.6 -1.4 navg = 0.028
Clopper Soil Loss, cm -1.5 -1.6 -1.4 Flow (cfs) = 3.07 1.47 2.83
18 ft Avg Bottom Loss/Gain, in -0.59 Avg Clopper Soil Loss, in -0.59
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 55.4 55.7 6.5 48.0
To eroded Surface Elev, cm 56.6 55.5 55 Vavg (fps) = 6.50
Soil Loss / Gain, cm -1.4 -0.1 0.7 navg = 0.029
Clopper Soil Loss, cm -1.4 -0.1 0 Flow (cfs) = 3.28 1.57 3.03
20 ft Avg Bottom Loss/Gain, in -0.10 Avg Clopper Soil Loss, in -0.20
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.4 58.1 57 6.5 50.9
To eroded Surface Elev, cm 59 58 58 Vavg (fps) = 6.50
Soil Loss / Gain, cm -0.6 0.1 -1 navg = 0.028
Clopper Soil Loss, cm -0.6 0 -1 Flow (cfs) = 3.17 1.52 2.93
Avg Bottom Loss/Gain, in -0.20 Avg Clopper Soil Loss, in -0.21
Soil Loss / Gain, in -0.34 -0.12 -0.26 Avg Bottom Loss/Gain per Cross-Section = -0.24
Clopper Soil Loss, in -0.39 -0.16 -0.30 Avg Clopper Soil Loss per Cross-Section = -0.28
Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf)
Bed Max Shear Stress
(psf)
Bed Max Shear Stress
(psf) Water Depth (in)
Water Depth (in)
Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf)
Bed Max Shear Stress
(psf) Water Depth (in)
CHANNEL 1 - SHEAR STRESS 3
TEST DATA
EG-2S 3.8 staples / sy
FLOW
2
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
1 - 4
Date: 6/29/10 Start Time: 4:00 PM End Time: 4:30 PM
Soil: Loam Target Shear (psf): 4.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
1900 rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 5.50 4.00
Weir width (ft) = 2.00 C = Water Velocity, ft/s 6.00 8.25
0 ft A B C Flow Rate, cfs 0.00 5.50 0.00 5.50
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.8 52.4 52.2 8 42.0
To eroded Surface Elev, cm 52.8 52.2 52.5 Vavg (fps) = 8.00
Soil Loss / Gain, cm 0 0.2 -0.3 navg = 0.029
Clopper Soil Loss, cm 0 0 -0.3 Flow (cfs) = 5.51 2.15 4.13
2 ft Avg Bottom Loss/Gain, in -0.01 Avg Clopper Soil Loss, in -0.04
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 52.5 52.2 52.5 8.5 42.5
To eroded Surface Elev, cm 53.3 52.7 52.5 Vavg (fps) = 8.50
Soil Loss / Gain, cm -0.8 -0.5 0 navg = 0.027
Clopper Soil Loss, cm -0.8 -0.5 0 Flow (cfs) = 5.76 2.11 4.07
4 ft Avg Bottom Loss/Gain, in -0.17 Avg Clopper Soil Loss, in -0.17
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54 53.5 8.5 44.0
To eroded Surface Elev, cm 55.2 54.8 53.8 Vavg (fps) = 8.50
Soil Loss / Gain, cm -1 -0.8 -0.3 navg = 0.027
Clopper Soil Loss, cm -1 -0.8 -0.3 Flow (cfs) = 5.91 2.17 4.17
6 ft Avg Bottom Loss/Gain, in -0.28 Avg Clopper Soil Loss, in -0.28
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53 54.2 53.5 8.5 45.4
To eroded Surface Elev, cm 56.8 56 54.5 Vavg (fps) = 8.50
Soil Loss / Gain, cm -3.8 -1.8 -1 navg = 0.027
Clopper Soil Loss, cm -3.8 -1.8 -1 Flow (cfs) = 5.78 2.12 4.08
8 ft Avg Bottom Loss/Gain, in -0.87 Avg Clopper Soil Loss, in -0.87
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.8 54 51.5 8.5 46.4
To eroded Surface Elev, cm 59.5 56.5 53.5 Vavg (fps) = 8.50
Soil Loss / Gain, cm -4.7 -2.5 -2 navg = 0.026
Clopper Soil Loss, cm -4.7 -2.5 -2 Flow (cfs) = 5.63 2.06 3.98
10 ft Avg Bottom Loss/Gain, in -1.21 Avg Clopper Soil Loss, in -1.21
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 54.1 53.9 8.5 45.6
To eroded Surface Elev, cm 55.7 56.2 56 Vavg (fps) = 8.50
Soil Loss / Gain, cm -1.5 -2.1 -2.1 navg = 0.027
Clopper Soil Loss, cm -1.5 -2.1 -2.1 Flow (cfs) = 5.78 2.12 4.08
12 ft Avg Bottom Loss/Gain, in -0.75 Avg Clopper Soil Loss, in -0.75
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 52.7 8.5 45.8
To eroded Surface Elev, cm 56 55.7 55.2 Vavg (fps) = 8.50
Soil Loss / Gain, cm -1.5 -1.7 -2.5 navg = 0.026
Clopper Soil Loss, cm -1.5 -1.7 -2.5 Flow (cfs) = 5.48 2.01 3.87
14 ft Avg Bottom Loss/Gain, in -0.75 Avg Clopper Soil Loss, in -0.75
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55 54.2 53.5 8.5 44.5
To eroded Surface Elev, cm 55.6 54.2 55 Vavg (fps) = 8.50
Soil Loss / Gain, cm -0.6 0 -1.5 navg = 0.027
Clopper Soil Loss, cm -0.6 0 -1.5 Flow (cfs) = 5.82 2.13 4.11
16 ft Avg Bottom Loss/Gain, in -0.28 Avg Clopper Soil Loss, in -0.28
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 53.6 8.5 44.8
To eroded Surface Elev, cm 55.7 55 54.5 Vavg (fps) = 8.50
Soil Loss / Gain, cm -1.2 -0.5 -0.9 navg = 0.027
Clopper Soil Loss, cm -1.2 -0.5 -0.9 Flow (cfs) = 5.73 2.10 4.04
18 ft Avg Bottom Loss/Gain, in -0.34 Avg Clopper Soil Loss, in -0.34
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 55.4 55.7 8.5 46.5
To eroded Surface Elev, cm 58.5 56 55 Vavg (fps) = 8.50
Soil Loss / Gain, cm -3.3 -0.6 0.7 navg = 0.026
Clopper Soil Loss, cm -3.3 -0.6 0 Flow (cfs) = 5.58 2.04 3.94
20 ft Avg Bottom Loss/Gain, in -0.42 Avg Clopper Soil Loss, in -0.51
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.4 58.1 57 8.5 49.1
To eroded Surface Elev, cm 60 59 56.7 Vavg (fps) = 8.50
Soil Loss / Gain, cm -1.6 -0.9 0.3 navg = 0.025
Clopper Soil Loss, cm -1.6 -0.9 0 Flow (cfs) = 5.28 1.93 3.73
Avg Bottom Loss/Gain, in -0.29 Avg Clopper Soil Loss, in -0.33
Soil Loss / Gain, in -0.72 -0.40 -0.34 Avg Bottom Loss/Gain per Cross-Section = -0.49
Clopper Soil Loss, in -0.72 -0.41 -0.38 Avg Clopper Soil Loss per Cross-Section = -0.50
Bed Max Shear Stress
(psf) Water Depth (in)
CHANNEL 1 - SHEAR STRESS 4
TEST DATA
0.00
FLOW
2
EG-2S 3.8 staples / sy
Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
Bed Max Shear Stress
(psf) Water Depth (in)
2 - 1
Date: 6/29/10 Start Time: 12:45 PM End Time: 1:15 PM
Soil: Loam Target Shear (psf): 0.50 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Outlet Weir Weir Channel Targets
Water Depth, in 1.0 1.00
Weir width (ft) = 2 Water Velocity, ft/s 2.0 2.00
0 ft A B C Flow Rate, cfs 0.0 0.3 0.0 0.33
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.6 55.6 54.7 1.5 52.3
To eroded Surface Elev, cm 55.2 55.3 54.5 Vavg (fps) = 1.5
Soil Loss / Gain, cm 0.4 0.3 0.2 navg = 0.062
Clopper Soil Loss, cm 0.0 0.0 0.0 Flow (cfs) = 0.3 0.6 1.1
2 ft Avg Bottom Loss/Gain, in 0.1 Avg Clopper Soil Loss, in 0.0
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 55.8 55.2 1.5 53.0
To eroded Surface Elev, cm 55.3 56.2 55.5 Vavg (fps) = 1.5
Soil Loss / Gain, cm 0.7 -0.4 -0.3 navg = 0.062
Clopper Soil Loss, cm 0.0 -0.4 -0.3 Flow (cfs) = 0.3 0.5 1.0
4 ft Avg Bottom Loss/Gain, in 0.0 Avg Clopper Soil Loss, in -0.1
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.8 56.0 53.8 2.0 53.6
To eroded Surface Elev, cm 57.0 56.7 54.5 Vavg (fps) = 2.0
Soil Loss / Gain, cm -0.2 -0.7 -0.7 navg = 0.044
Clopper Soil Loss, cm -0.2 -0.7 -0.7 Flow (cfs) = 0.3 0.5 1.0
6 ft 25.5Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.9 57.3 56.0 2.0 53.6
To eroded Surface Elev, cm 57.0 56.2 55.7 Vavg (fps) = 2.0
Soil Loss / Gain, cm -0.1 1.1 0.3 navg = 0.047
Clopper Soil Loss, cm -0.1 0.0 0.0 Flow (cfs) = 0.4 0.6 1.1
8 ft Avg Bottom Loss/Gain, in 0.2 Avg Clopper Soil Loss, in 0.0
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.1 56.8 56.0 2.0 54.0
To eroded Surface Elev, cm 57.3 56.6 55.8 Vavg (fps) = 2.0
Soil Loss / Gain, cm -0.2 0.2 0.2 navg = 0.045
Clopper Soil Loss, cm -0.2 0.0 0.0 Flow (cfs) = 0.3 0.5 1.0
10 ft Avg Bottom Loss/Gain, in 0.0 Avg Clopper Soil Loss, in 0.0
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.4 57.0 56.5 2.0 54.5
To eroded Surface Elev, cm 58.2 57.0 56.5 Vavg (fps) = 2.0
Soil Loss / Gain, cm -0.8 0.0 0.0 navg = 0.047
Clopper Soil Loss, cm -0.8 0.0 0.0 Flow (cfs) = 0.4 0.6 1.1
12 ft Avg Bottom Loss/Gain, in -0.1 Avg Clopper Soil Loss, in -0.1
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.1 56.2 54.2 2.5 52.7
To eroded Surface Elev, cm 56.0 55.5 53.7 Vavg (fps) = 2.5
Soil Loss / Gain, cm 0.1 0.7 0.5 navg = 0.034
Clopper Soil Loss, cm 0.0 0.0 0.0 Flow (cfs) = 0.4 0.5 0.9
14 ft Avg Bottom Loss/Gain, in 0.2 Avg Clopper Soil Loss, in 0.0
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.6 53.7 53.3 2.5 51.2
To eroded Surface Elev, cm 55.0 53.5 52.8 Vavg (fps) = 2.5
Soil Loss / Gain, cm -0.4 0.2 0.5 navg = 0.036
Clopper Soil Loss, cm -0.4 0.0 0.0 Flow (cfs) = 0.4 0.5 1.0
16 ft Avg Bottom Loss/Gain, in 0.0 Avg Clopper Soil Loss, in -0.1
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 54.5 53.4 2.5 53.0
To eroded Surface Elev, cm 57.2 56.0 53.8 Vavg (fps) = 2.5
Soil Loss / Gain, cm -1.2 -1.5 -0.4 navg = 0.037
Clopper Soil Loss, cm -1.2 -1.5 -0.4 Flow (cfs) = 0.4 0.5 1.0
18 ft Avg Bottom Loss/Gain, in -0.4 Avg Clopper Soil Loss, in -0.4
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55.5 58.0 2.5 54.4
To eroded Surface Elev, cm 54.8 56.6 59.0 Vavg (fps) = 2.5
Soil Loss / Gain, cm -0.5 -1.1 -1.0 navg = 0.035
Clopper Soil Loss, cm -0.5 -1.1 -1.0 Flow (cfs) = 0.4 0.5 0.9
20 ft Avg Bottom Loss/Gain, in -0.3 Avg Clopper Soil Loss, in -0.3
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.5 56.0 55.8 2.5 54.4
To eroded Surface Elev, cm 56.5 57.9 56.0 Vavg (fps) = 2.5
Soil Loss / Gain, cm 0.0 -1.9 -0.2 navg = 0.035
Clopper Soil Loss, cm 0.0 -1.9 -0.2 Flow (cfs) = 0.4 0.5 0.9
Avg Bottom Loss/Gain, in -0.3 Avg Clopper Soil Loss, in -0.3
Soil Loss / Gain, in -0.1 -0.1 0.0 Avg Bottom Loss/Gain per Cross-Section = -0.1
Clopper Soil Loss, in -0.1 -0.2 -0.1 Avg Clopper Soil Loss per Cross-Section = -0.1
CHANNEL 2 - SHEAR STRESS 1
TEST DATA
FLOW
2
EG-2S 3.8 staples / sy
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
2 - 2
Date: 6/29/10 Start Time: 1:30 PM End Time: 2:00 PM
Soil: Loam Target Shear (psf): 1.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
1500 rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 2.5 2.00
Weir width (ft) = 2 Water Velocity, ft/s 3.6 4.50
0 ft A B C Flow Rate, cfs 0.0 1.5 0.0 1.50
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.6 55.6 54.7 4.0 49.8
To eroded Surface Elev, cm 55.5 55.5 54.3 Vavg (fps) = 4.0
Soil Loss / Gain, cm 0.1 0.1 0.4 navg = 0.037
Clopper Soil Loss, cm 0.0 0.0 0.0 Flow (cfs) = 1.4 1.1 2.1
2 ft Avg Bottom Loss/Gain, in 0.1 Avg Clopper Soil Loss, in 0.0
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 55.8 55.2 4.0 51.0
To eroded Surface Elev, cm 55.5 56.5 55.8 Vavg (fps) = 4.0
Soil Loss / Gain, cm 0.5 -0.7 -0.6 navg = 0.035
Clopper Soil Loss, cm 0.0 -0.7 -0.6 Flow (cfs) = 1.3 1.0 1.9
4 ft Avg Bottom Loss/Gain, in -0.1 Avg Clopper Soil Loss, in -0.2
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.8 56.0 53.8 4.5 51.0
To eroded Surface Elev, cm 57.5 56.0 55.2 Vavg (fps) = 4.5
Soil Loss / Gain, cm -0.7 0.0 -1.4 navg = 0.032
Clopper Soil Loss, cm -0.7 0.0 -1.4 Flow (cfs) = 1.5 1.1 2.1
6 ft Avg Bottom Loss/Gain, in -0.3 Avg Clopper Soil Loss, in -0.3
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.9 57.3 56.0 4.5 51.7
To eroded Surface Elev, cm 57.3 56.6 56.6 Vavg (fps) = 4.5
Soil Loss / Gain, cm -0.4 0.7 -0.6 navg = 0.032
Clopper Soil Loss, cm -0.4 0.0 -0.6 Flow (cfs) = 1.5 1.0 2.0
8 ft Avg Bottom Loss/Gain, in 0.0 Avg Clopper Soil Loss, in -0.1
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.1 56.8 56.0 4.5 52.0
To eroded Surface Elev, cm 57.8 57.0 56.7 Vavg (fps) = 4.5
Soil Loss / Gain, cm -0.7 -0.2 -0.7 navg = 0.032
Clopper Soil Loss, cm -0.7 -0.2 -0.7 Flow (cfs) = 1.5 1.1 2.0
10 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.4 57.0 56.5 4.5 52.2
To eroded Surface Elev, cm 57.2 57.5 57.5 Vavg (fps) = 4.5
Soil Loss / Gain, cm 0.2 -0.5 -1.0 navg = 0.032
Clopper Soil Loss, cm 0.0 -0.5 -1.0 Flow (cfs) = 1.5 1.1 2.0
12 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.1 56.2 54.2 4.5 49.9
To eroded Surface Elev, cm 56.5 55.7 53.4 Vavg (fps) = 4.5
Soil Loss / Gain, cm -0.4 0.5 0.8 navg = 0.033
Clopper Soil Loss, cm -0.4 0.0 0.0 Flow (cfs) = 1.6 1.1 2.1
14 ft Avg Bottom Loss/Gain, in 0.1 Avg Clopper Soil Loss, in -0.1
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.6 53.7 53.3 4.5 49.5
To eroded Surface Elev, cm 55.5 54.0 54.0 Vavg (fps) = 4.5
Soil Loss / Gain, cm -0.9 -0.3 -0.7 navg = 0.031
Clopper Soil Loss, cm -0.9 -0.3 -0.7 Flow (cfs) = 1.5 1.0 2.0
16 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 54.5 53.4 4.5 51.7
To eroded Surface Elev, cm 57.7 58.1 54.2 Vavg (fps) = 4.5
Soil Loss / Gain, cm -1.7 -3.6 -0.8 navg = 0.031
Clopper Soil Loss, cm -1.7 -3.6 -0.8 Flow (cfs) = 1.5 1.0 2.0
18 ft Avg Bottom Loss/Gain, in -0.8 Avg Clopper Soil Loss, in -0.8
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55.5 58.0 4.5 53.0
To eroded Surface Elev, cm 60.2 58.2 55.0 Vavg (fps) = 4.5
Soil Loss / Gain, cm -5.9 -2.7 3.0 navg = 0.030
Clopper Soil Loss, cm -5.9 -2.7 0.0 Flow (cfs) = 1.4 1.0 1.9
20 ft Avg Bottom Loss/Gain, in -0.7 Avg Clopper Soil Loss, in -1.1
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.5 56.0 55.8 4.5 53.5
To eroded Surface Elev, cm 59.6 58.5 56.9 Vavg (fps) = 4.5
Soil Loss / Gain, cm -3.1 -2.5 -1.1 navg = 0.031
Clopper Soil Loss, cm -3.1 -2.5 -1.1 Flow (cfs) = 1.4 1.0 1.9
Avg Bottom Loss/Gain, in -0.9 Avg Clopper Soil Loss, in -0.9
Soil Loss / Gain, in -0.5 -0.3 -0.1 Avg Bottom Loss/Gain per Cross-Section = -0.3
Clopper Soil Loss, in -0.5 -0.4 -0.2 Avg Clopper Soil Loss per Cross-Section = -0.4
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
CHANNEL 2 - SHEAR STRESS 2
TEST DATA
EG-2S 3.8 staples / sy
FLOW
2
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
2 - 3
Date: 6/29/10 Start Time: 12:00 PM End Time: 12:30 PM
Soil: Loam Target Shear (psf): 3.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 4.0 3.00
Weir width (ft) = 2 Water Velocity, ft/s 5.0 6.67
0 ft A B C Flow Rate, cfs 0.0 3.3 0.0 3.33
Cross-section 1 A B C V @ 0.2d V @ 0.6d To Water Surf, cm
To original Surface Elev, cm 55.6 55.6 54.7 6.0 47.5
To eroded Surface Elev, cm 56.0 55.7 54.8 Vavg (fps) = 6.0
Soil Loss / Gain, cm -0.4 -0.1 -0.1 navg = 0.032
Clopper Soil Loss, cm -0.4 -0.1 -0.1 Flow (cfs) = 3.1 1.6 3.1
2 ft Avg Bottom Loss/Gain, in -0.1 Avg Clopper Soil Loss, in -0.1
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 55.8 55.2 6.5 48.5
To eroded Surface Elev, cm 56.2 56.5 56.0 Vavg (fps) = 6.5
Soil Loss / Gain, cm -0.2 -0.7 -0.8 navg = 0.029
Clopper Soil Loss, cm -0.2 -0.7 -0.8 Flow (cfs) = 3.3 1.6 3.0
4 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.8 56.0 53.8 7.0 48.5
To eroded Surface Elev, cm 57.8 56.3 55.3 Vavg (fps) = 7.0
Soil Loss / Gain, cm -1.0 -0.3 -1.5 navg = 0.027
Clopper Soil Loss, cm -1.0 -0.3 -1.5 Flow (cfs) = 3.7 1.6 3.1
6 ft Avg Bottom Loss/Gain, in -0.4 Avg Clopper Soil Loss, in -0.4
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.9 57.3 56.0 7.0 49.5
To eroded Surface Elev, cm 57.5 56.7 56.5 Vavg (fps) = 7.0
Soil Loss / Gain, cm -0.6 0.6 -0.5 navg = 0.026
Clopper Soil Loss, cm -0.6 0.0 -0.5 Flow (cfs) = 3.4 1.5 2.9
8 ft Avg Bottom Loss/Gain, in -0.1 Avg Clopper Soil Loss, in -0.1
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.1 56.8 56.0 7.0 50.0
To eroded Surface Elev, cm 58.2 56.9 56.7 Vavg (fps) = 7.0
Soil Loss / Gain, cm -1.1 -0.1 -0.7 navg = 0.026
Clopper Soil Loss, cm -1.1 -0.1 -0.7 Flow (cfs) = 3.3 1.5 2.9
10 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.4 57.0 56.5 7.0 50.0
To eroded Surface Elev, cm 58.7 57.3 57.0 Vavg (fps) = 7.0
Soil Loss / Gain, cm -1.3 -0.3 -0.5 navg = 0.027
Clopper Soil Loss, cm -1.3 -0.3 -0.5 Flow (cfs) = 3.5 1.6 3.0
12 ft Avg Bottom Loss/Gain, in -0.3 Avg Clopper Soil Loss, in -0.3
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.1 56.2 54.2 7.0 48.0
To eroded Surface Elev, cm 57.6 56.0 54.3 Vavg (fps) = 7.0
Soil Loss / Gain, cm -1.5 0.2 -0.1 navg = 0.0
Clopper Soil Loss, cm -1.5 0.0 -0.1 Flow (cfs) = 3.7 1.6 3.1
14 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.6 53.7 53.3 7.0 47.1
To eroded Surface Elev, cm 55.7 54.2 54.5 Vavg (fps) = 7.0
Soil Loss / Gain, cm -1.1 -0.5 -1.2 navg = 0.027
Clopper Soil Loss, cm -1.1 -0.5 -1.2 Flow (cfs) = 3.5 1.6 3.0
16 ft Avg Bottom Loss/Gain, in -0.4 Avg Clopper Soil Loss, in -0.4
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 54.5 53.4 7.0 49.5
To eroded Surface Elev, cm 58.2 58.8 54.7 Vavg (fps) = 7.0
Soil Loss / Gain, cm -2.2 -4.3 -1.3 navg = 0.027
Clopper Soil Loss, cm -2.2 -4.3 -1.3 Flow (cfs) = 3.6 1.6 3.0
18 ft Avg Bottom Loss/Gain, in -1.0 Avg Clopper Soil Loss, in -1.0
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55.5 58.0 7.0 50.1
To eroded Surface Elev, cm 60.8 58.0 55.0 Vavg (fps) = 7.0
Soil Loss / Gain, cm -6.5 -2.5 3.0 navg = 0.027
Clopper Soil Loss, cm -6.5 -2.5 0.0 Flow (cfs) = 3.6 1.6 3.1
20 ft Avg Bottom Loss/Gain, in -0.8 Avg Clopper Soil Loss, in -1.2
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.5 56.0 55.8 7.0 52.9
To eroded Surface Elev, cm 64.2 59.2 57.2 Vavg (fps) = 7.0
Soil Loss / Gain, cm -7.7 -3.2 -1.4 navg = 0.026
Clopper Soil Loss, cm -7.7 -3.2 -1.4 Flow (cfs) = 3.4 1.5 2.9
Avg Bottom Loss/Gain, in -1.6 Avg Clopper Soil Loss, in -1.6
Soil Loss / Gain, in -0.8 -0.4 -0.2 Avg Bottom Loss/Gain per Cross-Section = -0.5
Clopper Soil Loss, in -0.8 -0.4 -0.3 Avg Clopper Soil Loss per Cross-Section = -0.5
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
CHANNEL 2 - SHEAR STRESS 3
TEST DATA
FLOW
2
EG-2S 3.8 staples / sy
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
2 - 4
Date: 6/29/10 Start Time: 4:00 PM End Time: 4:30 PM
Soil: Loam Target Shear (psf): 4.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
1900 rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 5.5 4.00
Weir width (ft) = 2.00 C = Water Velocity, ft/s 6.0 8.25
0 ft A B C Flow Rate, cfs 0.0 5.5 0.0 5.50
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.6 55.6 54.7 7.5 45.1
To eroded Surface Elev, cm 56.3 55.3 55.0 Vavg (fps) = 7.5
Soil Loss / Gain, cm -0.7 0.3 -0.3 navg = 0.031
Clopper Soil Loss, cm -0.7 0.0 -0.3 Flow (cfs) = 5.1 2.1 4.1
2 ft Avg Bottom Loss/Gain, in -0.1 Avg Clopper Soil Loss, in -0.1
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 55.8 55.2 8.0 46.2
To eroded Surface Elev, cm 56.0 56.5 56.4 Vavg (fps) = 8.0
Soil Loss / Gain, cm 0.0 -0.7 -1.2 navg = 0.028
Clopper Soil Loss, cm 0.0 -0.7 -1.2 Flow (cfs) = 5.3 2.1 4.0
4 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.2
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.8 56.0 53.8 8.0 47.0
To eroded Surface Elev, cm 57.8 57.0 55.5 Vavg (fps) = 8.0
Soil Loss / Gain, cm -1.0 -1.0 -1.7 navg = 0.028
Clopper Soil Loss, cm -1.0 -1.0 -1.7 Flow (cfs) = 5.1 2.0 3.8
6 ft Avg Bottom Loss/Gain, in -0.5 Avg Clopper Soil Loss, in -0.5
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.9 57.3 56.0 8.5 47.5
To eroded Surface Elev, cm 58.0 57.0 57.0 Vavg (fps) = 8.5
Soil Loss / Gain, cm -1.1 0.3 -1.0 navg = 0.026
Clopper Soil Loss, cm -1.1 0.0 -1.0 Flow (cfs) = 5.5 2.0 3.9
8 ft Avg Bottom Loss/Gain, in -0.2 Avg Clopper Soil Loss, in -0.3
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.1 56.8 56.0 8.5 47.8
To eroded Surface Elev, cm 59.6 57.0 56.3 Vavg (fps) = 8.5
Soil Loss / Gain, cm -2.5 -0.2 -0.3 navg = 0.026
Clopper Soil Loss, cm -2.5 -0.2 -0.3 Flow (cfs) = 5.5 2.0 3.9
10 ft Avg Bottom Loss/Gain, in -0.4 Avg Clopper Soil Loss, in -0.4
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 57.4 57.0 56.5 9.5 48.5
To eroded Surface Elev, cm 58.8 58.0 57.7 Vavg (fps) = 9.5
Soil Loss / Gain, cm -1.4 -1.0 -1.2 navg = 0.023
Clopper Soil Loss, cm -1.4 -1.0 -1.2 Flow (cfs) = 6.0 2.0 3.8
12 ft Avg Bottom Loss/Gain, in -0.5 Avg Clopper Soil Loss, in -0.5
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.1 56.2 54.2 9.5 46.0
To eroded Surface Elev, cm 58.5 56.0 54.0 Vavg (fps) = 9.5
Soil Loss / Gain, cm -2.4 0.2 0.2 navg = 0.024
Clopper Soil Loss, cm -2.4 0.0 0.0 Flow (cfs) = 6.3 2.1 4.0
14 ft Avg Bottom Loss/Gain, in -0.3 Avg Clopper Soil Loss, in -0.3
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.6 53.7 53.3 8.5 45.5
To eroded Surface Elev, cm 56.0 54.6 54.3 Vavg (fps) = 8.5
Soil Loss / Gain, cm -1.4 -0.9 -1.0 navg = 0.025
Clopper Soil Loss, cm -1.4 -0.9 -1.0 Flow (cfs) = 5.3 1.9 3.7
16 ft Avg Bottom Loss/Gain, in -0.4 Avg Clopper Soil Loss, in -0.4
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.0 54.5 53.4 9.0 49.0
To eroded Surface Elev, cm 61.7 59.0 54.6 Vavg (fps) = 9.0
Soil Loss / Gain, cm -5.7 -4.5 -1.2 navg = 0.024
Clopper Soil Loss, cm -5.7 -4.5 -1.2 Flow (cfs) = 5.6 1.9 3.7
18 ft Avg Bottom Loss/Gain, in -1.5 Avg Clopper Soil Loss, in -1.5
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55.5 58.0 9.0 49.7
To eroded Surface Elev, cm 62.8 59.3 55.5 Vavg (fps) = 9.0
Soil Loss / Gain, cm -8.5 -3.8 2.5 navg = 0.024
Clopper Soil Loss, cm -8.5 -3.8 0.0 Flow (cfs) = 5.6 1.9 3.7
20 ft Avg Bottom Loss/Gain, in -1.3 Avg Clopper Soil Loss, in -1.6
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 56.5 56.0 55.8 9.0 48.5
To eroded Surface Elev, cm 54.7 60.2 57.2 Vavg (fps) = 9.0
Soil Loss / Gain, cm 1.8 -4.2 -1.4 navg = 0.023
Clopper Soil Loss, cm 0.0 -4.2 -1.4 Flow (cfs) = 5.2 1.8 3.5
Avg Bottom Loss/Gain, in -0.5 Avg Clopper Soil Loss, in -0.7
Soil Loss / Gain, in -0.8 -0.6 -0.2 Avg Bottom Loss/Gain per Cross-Section = -0.5
Clopper Soil Loss, in -0.9 -0.6 -0.3 Avg Clopper Soil Loss per Cross-Section = -0.6
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
CHANNEL 2 - SHEAR STRESS 4
TEST DATA
0.00
EG-2S 3.8 staples / sy
FLOW
2
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
3 - 1
Date: 6/29/10 Start Time: 12:45 PM End Time: 1:15 PM
Soil: Loam Target Shear (psf): 0.50 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Outlet Weir Weir Channel Targets
Water Depth, in 1.00 1.00
Weir width (ft) = 2 Water Velocity, ft/s 2.00 2.00
0 ft A B C Flow Rate, cfs 0.00 0.33 0.00 0.33
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 54.8 53.5 1.5 51.5
To eroded Surface Elev, cm 54.3 55 53.7 Vavg (fps) = 1.50
Soil Loss / Gain, cm 0 -0.2 -0.2 navg = 0.064
Clopper Soil Loss, cm 0 -0.2 -0.2 Flow (cfs) = 0.28 0.58 1.12
2 ft Avg Bottom Loss/Gain, in -0.05 Avg Clopper Soil Loss, in -0.05
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55 54 1.5 52.1
To eroded Surface Elev, cm 54.5 55.1 54.2 Vavg (fps) = 1.50
Soil Loss / Gain, cm -0.2 -0.1 -0.2 navg = 0.059
Clopper Soil Loss, cm -0.2 -0.1 -0.2 Flow (cfs) = 0.25 0.51 0.98
4 ft Avg Bottom Loss/Gain, in -0.07 Avg Clopper Soil Loss, in -0.07
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 53.6 53.2 1.5 51.3
To eroded Surface Elev, cm 54.7 53.6 53.5 Vavg (fps) = 1.50
Soil Loss / Gain, cm -0.5 0 -0.3 navg = 0.061
Clopper Soil Loss, cm -0.5 0 -0.3 Flow (cfs) = 0.26 0.54 1.04
6 ft 25.5Avg Bottom Loss/Gain, in -0.10 Avg Clopper Soil Loss, in -0.10
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.1 52.3 2 50.1
To eroded Surface Elev, cm 54 52.3 52.3 Vavg (fps) = 2.00
Soil Loss / Gain, cm -0.3 -0.2 0 navg = 0.047
Clopper Soil Loss, cm -0.3 -0.2 0 Flow (cfs) = 0.36 0.57 1.09
8 ft Avg Bottom Loss/Gain, in -0.07 Avg Clopper Soil Loss, in -0.07
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.9 51.7 2 50.5
To eroded Surface Elev, cm 53.8 53.2 52 Vavg (fps) = 2.00
Soil Loss / Gain, cm -0.1 -0.3 -0.3 navg = 0.044
Clopper Soil Loss, cm -0.1 -0.3 -0.3 Flow (cfs) = 0.33 0.51 0.98
10 ft Avg Bottom Loss/Gain, in -0.09 Avg Clopper Soil Loss, in -0.09
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54 54 53.3 2 51.6
To eroded Surface Elev, cm 54.5 54.5 53.5 Vavg (fps) = 2.00
Soil Loss / Gain, cm -0.5 -0.5 -0.2 navg = 0.045
Clopper Soil Loss, cm -0.5 -0.5 -0.2 Flow (cfs) = 0.34 0.52 1.01
12 ft Avg Bottom Loss/Gain, in -0.16 Avg Clopper Soil Loss, in -0.16
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 54 2 51.9
To eroded Surface Elev, cm 55 54.5 54.2 Vavg (fps) = 2.00
Soil Loss / Gain, cm -0.5 -0.5 -0.2 navg = 0.046
Clopper Soil Loss, cm -0.5 -0.5 -0.2 Flow (cfs) = 0.35 0.55 1.05
14 ft Avg Bottom Loss/Gain, in -0.16 Avg Clopper Soil Loss, in -0.16
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 54.5 54.8 2.5 52.1
To eroded Surface Elev, cm 55.2 54.8 54.7 Vavg (fps) = 2.50
Soil Loss / Gain, cm 0 -0.3 0.1 navg = 0.038
Clopper Soil Loss, cm 0 -0.3 0 Flow (cfs) = 0.46 0.57 1.10
16 ft Avg Bottom Loss/Gain, in -0.03 Avg Clopper Soil Loss, in -0.04
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 54.5 2.5 52.1
To eroded Surface Elev, cm 54.6 54.6 54.5 Vavg (fps) = 2.50
Soil Loss / Gain, cm -0.1 -0.1 0 navg = 0.035
Clopper Soil Loss, cm -0.1 -0.1 0 Flow (cfs) = 0.40 0.50 0.97
18 ft Avg Bottom Loss/Gain, in -0.03 Avg Clopper Soil Loss, in -0.03
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.7 55.8 56.7 2.5 53.7
To eroded Surface Elev, cm 55 56 57.5 Vavg (fps) = 2.50
Soil Loss / Gain, cm -0.3 -0.2 -0.8 navg = 0.035
Clopper Soil Loss, cm -0.3 -0.2 -0.8 Flow (cfs) = 0.40 0.50 0.97
20 ft Avg Bottom Loss/Gain, in -0.17 Avg Clopper Soil Loss, in -0.17
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.1 57.4 56.3 2.5 55.5
To eroded Surface Elev, cm 58.5 57.5 56.7 Vavg (fps) = 2.50
Soil Loss / Gain, cm -0.4 -0.1 -0.4 navg = 0.031
Clopper Soil Loss, cm -0.4 -0.1 -0.4 Flow (cfs) = 0.34 0.42 0.81
Avg Bottom Loss/Gain, in -0.12 Avg Clopper Soil Loss, in -0.12
Soil Loss / Gain, in -0.10 -0.09 -0.09 Avg Bottom Loss/Gain per Cross-Section = -0.09
Clopper Soil Loss, in -0.10 -0.09 -0.09 Avg Clopper Soil Loss per Cross-Section = -0.10
CHANNEL 3 - SHEAR STRESS 1
TEST DATA
FLOW
2
EG-2S 3.8 staples / sy
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
3 - 2
Date: 6/29/10 Start Time: 1:30 PM End Time: 2:00 PM
Soil: Loam Target Shear (psf): 1.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 2.50 2.00
Weir width (ft) = 2 Water Velocity, ft/s 3.60 4.50
0 ft A B C Flow Rate, cfs 0.00 1.50 0.00 1.50
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 54.8 53.5 4 49.0
To eroded Surface Elev, cm 54 55.1 53.5 Vavg (fps) = 4.00
Soil Loss / Gain, cm 0.3 -0.3 0 navg = 0.036
Clopper Soil Loss, cm 0 -0.3 0 Flow (cfs) = 1.36 1.06 2.05
2 ft Avg Bottom Loss/Gain, in 0.00 Avg Clopper Soil Loss, in -0.04
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55 54 4 49.5
To eroded Surface Elev, cm 54.5 55 54 Vavg (fps) = 4.00
Soil Loss / Gain, cm -0.2 0 0 navg = 0.035
Clopper Soil Loss, cm -0.2 0 0 Flow (cfs) = 1.31 1.02 1.97
4 ft Avg Bottom Loss/Gain, in -0.03 Avg Clopper Soil Loss, in -0.03
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 53.6 53.2 4.5 48.8
To eroded Surface Elev, cm 54.1 53 53.7 Vavg (fps) = 4.50
Soil Loss / Gain, cm 0.1 0.6 -0.5 navg = 0.030
Clopper Soil Loss, cm 0 0 -0.5 Flow (cfs) = 1.42 0.98 1.89
6 ft Avg Bottom Loss/Gain, in 0.03 Avg Clopper Soil Loss, in -0.07
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.1 52.3 4.5 48.2
To eroded Surface Elev, cm 54 53.5 52.8 Vavg (fps) = 4.50
Soil Loss / Gain, cm -0.3 -1.4 -0.5 navg = 0.032
Clopper Soil Loss, cm -0.3 -1.4 -0.5 Flow (cfs) = 1.55 1.07 2.06
8 ft Avg Bottom Loss/Gain, in -0.29 Avg Clopper Soil Loss, in -0.29
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.9 51.7 4.5 48.0
To eroded Surface Elev, cm 54 52.7 52.8 Vavg (fps) = 4.50
Soil Loss / Gain, cm -0.3 0.2 -1.1 navg = 0.032
Clopper Soil Loss, cm -0.3 0 -1.1 Flow (cfs) = 1.53 1.06 2.03
10 ft Avg Bottom Loss/Gain, in -0.16 Avg Clopper Soil Loss, in -0.18
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54 54 53.3 4.5 48.3
To eroded Surface Elev, cm 54 53 53.8 Vavg (fps) = 4.50
Soil Loss / Gain, cm 0 1 -0.5 navg = 0.033
Clopper Soil Loss, cm 0 0 -0.5 Flow (cfs) = 1.56 1.08 2.09
12 ft Avg Bottom Loss/Gain, in 0.07 Avg Clopper Soil Loss, in -0.07
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 54 4.5 49.5
To eroded Surface Elev, cm 54.7 55 54.5 Vavg (fps) = 4.50
Soil Loss / Gain, cm -0.2 -1 -0.5 navg = 0.032
Clopper Soil Loss, cm -0.2 -1 -0.5 Flow (cfs) = 1.55 1.07 2.06
14 ft Avg Bottom Loss/Gain, in -0.22 Avg Clopper Soil Loss, in -0.22
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 54.5 54.8 4.5 50.2
To eroded Surface Elev, cm 56.1 55.3 55 Vavg (fps) = 4.50
Soil Loss / Gain, cm -0.9 -0.8 -0.2 navg = 0.032
Clopper Soil Loss, cm -0.9 -0.8 -0.2 Flow (cfs) = 1.56 1.08 2.07
16 ft Avg Bottom Loss/Gain, in -0.25 Avg Clopper Soil Loss, in -0.25
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 54.5 4.5 50.0
To eroded Surface Elev, cm 55.6 55.3 55.2 Vavg (fps) = 4.50
Soil Loss / Gain, cm -1.1 -0.8 -0.7 navg = 0.033
Clopper Soil Loss, cm -1.1 -0.8 -0.7 Flow (cfs) = 1.58 1.10 2.11
18 ft Avg Bottom Loss/Gain, in -0.34 Avg Clopper Soil Loss, in -0.34
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.7 55.8 56.7 4.5 51.0
To eroded Surface Elev, cm 56 56.2 55.2 Vavg (fps) = 4.50
Soil Loss / Gain, cm -1.3 -0.4 1.5 navg = 0.030
Clopper Soil Loss, cm -1.3 -0.4 0 Flow (cfs) = 1.42 0.98 1.89
20 ft Avg Bottom Loss/Gain, in -0.03 Avg Clopper Soil Loss, in -0.22
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.1 57.4 56.3 4.5 52.5
To eroded Surface Elev, cm 58 57.2 56 Vavg (fps) = 4.50
Soil Loss / Gain, cm 0.1 0.2 0.3 navg = 0.029
Clopper Soil Loss, cm 0 0 0 Flow (cfs) = 1.35 0.93 1.80
Avg Bottom Loss/Gain, in 0.08 Avg Clopper Soil Loss, in 0.00
Soil Loss / Gain, in -0.14 -0.10 -0.08 Avg Bottom Loss/Gain per Cross-Section = -0.10
Clopper Soil Loss, in -0.15 -0.17 -0.14 Avg Clopper Soil Loss per Cross-Section = -0.16
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
CHANNEL 3 - SHEAR STRESS 2
TEST DATA
EG-2S 3.8 staples / sy
FLOW
2
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
3 - 3
Date: 6/29/10 Start Time: 3:00 PM End Time: 3:30 PM
Soil: Loam Target Shear (psf): 3.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 4.00 3.00
Weir width (ft) = 2 Water Velocity, ft/s 5.00 6.67
ft A B C Flow Rate, cfs 0.00 3.33 0.00 3.33
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 54.8 53.5 6 46.4
To eroded Surface Elev, cm 54.6 55 54 Vavg (fps) = 6.00
Soil Loss / Gain, cm -0.3 -0.2 -0.5 navg = 0.032
Clopper Soil Loss, cm -0.3 -0.2 -0.5 Flow (cfs) = 3.20 1.66 3.20
2 ft Avg Bottom Loss/Gain, in -0.13 Avg Clopper Soil Loss, in -0.13
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55 54 6.5 46.7
To eroded Surface Elev, cm 55 55 54.5 Vavg (fps) = 6.50
Soil Loss / Gain, cm -0.7 0 -0.5 navg = 0.030
Clopper Soil Loss, cm -0.7 0 -0.5 Flow (cfs) = 3.47 1.66 3.20
4 ft Avg Bottom Loss/Gain, in -0.16 Avg Clopper Soil Loss, in -0.16
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 53.6 53.2 6.5 46.0
To eroded Surface Elev, cm 53.7 53.7 53.9 Vavg (fps) = 6.50
Soil Loss / Gain, cm 0.5 -0.1 -0.7 navg = 0.029
Clopper Soil Loss, cm 0 -0.1 -0.7 Flow (cfs) = 3.31 1.59 3.06
6 ft Avg Bottom Loss/Gain, in -0.04 Avg Clopper Soil Loss, in -0.10
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.1 52.3 6.5 45.6
To eroded Surface Elev, cm 54.2 53.5 52 Vavg (fps) = 6.50
Soil Loss / Gain, cm -0.5 -1.4 0.3 navg = 0.029
Clopper Soil Loss, cm -0.5 -1.4 0 Flow (cfs) = 3.26 1.56 3.01
8 ft Avg Bottom Loss/Gain, in -0.21 Avg Clopper Soil Loss, in -0.25
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.9 51.7 6.5 45.3
To eroded Surface Elev, cm 53.6 53.6 52.5 Vavg (fps) = 6.50
Soil Loss / Gain, cm 0.1 -0.7 -0.8 navg = 0.029
Clopper Soil Loss, cm 0 -0.7 -0.8 Flow (cfs) = 3.38 1.62 3.12
10 ft Avg Bottom Loss/Gain, in -0.18 Avg Clopper Soil Loss, in -0.20
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54 54 53.3 7 46.2
To eroded Surface Elev, cm 54.5 54.7 53.4 Vavg (fps) = 7.00
Soil Loss / Gain, cm -0.5 -0.7 -0.1 navg = 0.028
Clopper Soil Loss, cm -0.5 -0.7 -0.1 Flow (cfs) = 3.67 1.64 3.15
12 ft Avg Bottom Loss/Gain, in -0.17 Avg Clopper Soil Loss, in -0.17
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 54 7 47.4
To eroded Surface Elev, cm 55.5 54.7 54.3 Vavg (fps) = 7.00
Soil Loss / Gain, cm -1 -0.7 -0.3 navg = 0.026
Clopper Soil Loss, cm -1 -0.7 -0.3 Flow (cfs) = 3.41 1.52 2.93
14 ft Avg Bottom Loss/Gain, in -0.26 Avg Clopper Soil Loss, in -0.26
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 54.5 54.8 7 47.8
To eroded Surface Elev, cm 56.2 55 55 Vavg (fps) = 7.00
Soil Loss / Gain, cm -1 -0.5 -0.2 navg = 0.027
Clopper Soil Loss, cm -1 -0.5 -0.2 Flow (cfs) = 3.49 1.55 2.99
16 ft Avg Bottom Loss/Gain, in -0.22 Avg Clopper Soil Loss, in -0.22
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 54.5 7 48.2
To eroded Surface Elev, cm 55.3 56 56.2 Vavg (fps) = 7.00
Soil Loss / Gain, cm -0.8 -1.5 -1.7 navg = 0.027
Clopper Soil Loss, cm -0.8 -1.5 -1.7 Flow (cfs) = 3.51 1.56 3.01
18 ft Avg Bottom Loss/Gain, in -0.52 Avg Clopper Soil Loss, in -0.52
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.7 55.8 56.7 7 48.9
To eroded Surface Elev, cm 56 57.5 55.2 Vavg (fps) = 7.00
Soil Loss / Gain, cm -1.3 -1.7 1.5 navg = 0.026
Clopper Soil Loss, cm -1.3 -1.7 0 Flow (cfs) = 3.37 1.50 2.89
20 ft Avg Bottom Loss/Gain, in -0.20 Avg Clopper Soil Loss, in -0.39
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.1 57.4 56.3 7 50.5
To eroded Surface Elev, cm 58.6 59 56.5 Vavg (fps) = 7.00
Soil Loss / Gain, cm -0.5 -1.6 -0.2 navg = 0.026
Clopper Soil Loss, cm -0.5 -1.6 -0.2 Flow (cfs) = 3.46 1.54 2.97
Avg Bottom Loss/Gain, in -0.30 Avg Clopper Soil Loss, in -0.30
Soil Loss / Gain, in -0.21 -0.33 -0.11 Avg Bottom Loss/Gain per Cross-Section = -0.22
Clopper Soil Loss, in -0.24 -0.33 -0.18 Avg Clopper Soil Loss per Cross-Section = -0.25
CHANNEL 3 - SHEAR STRESS 3
TEST DATA
FLOW
2
EG-2S 3.8 staples / sy
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
3 - 4
Date: 6/29/10 Start Time: 4:00 PM End Time: 4:30 PM
Soil: Loam Target Shear (psf): 4.00 Slope: 10%
40 ft long flume 20 ft test section RECP: Anchorage:
rpms 2 ft wide flume
1 3 Inlet Weir Weir Channel Targets
Water Depth, in 5.50 4.00
Weir width (ft) = 2.00 C = Water Velocity, ft/s 6.00 8.25
0 ft A B C Flow Rate, cfs 0.00 5.50 0.00 5.50
Cross-section 1 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 54.8 53.5 7.5 43.4
To eroded Surface Elev, cm 54.5 55.3 53.7 Vavg (fps) = 7.50
Soil Loss / Gain, cm -0.2 -0.5 -0.2 navg = 0.032
Clopper Soil Loss, cm -0.2 -0.5 -0.2 Flow (cfs) = 5.46 2.27 4.37
2 ft Avg Bottom Loss/Gain, in -0.12 Avg Clopper Soil Loss, in -0.12
Cross-section 2 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.3 55 54 8 44.5
To eroded Surface Elev, cm 55.2 56 54.7 Vavg (fps) = 8.00
Soil Loss / Gain, cm -0.9 -1 -0.7 navg = 0.029
Clopper Soil Loss, cm -0.9 -1 -0.7 Flow (cfs) = 5.67 2.21 4.25
4 ft Avg Bottom Loss/Gain, in -0.34 Avg Clopper Soil Loss, in -0.34
Cross-section 3 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.2 53.6 53.2 8.5 43.4
To eroded Surface Elev, cm 54.2 53.9 53.9 Vavg (fps) = 8.50
Soil Loss / Gain, cm 0 -0.3 -0.7 navg = 0.027
Clopper Soil Loss, cm 0 -0.3 -0.7 Flow (cfs) = 5.91 2.17 4.17
6 ft Avg Bottom Loss/Gain, in -0.13 Avg Clopper Soil Loss, in -0.13
Cross-section 4 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.1 52.3 8 43.4
To eroded Surface Elev, cm 54 54.5 54 Vavg (fps) = 8.00
Soil Loss / Gain, cm -0.3 -2.4 -1.7 navg = 0.029
Clopper Soil Loss, cm -0.3 -2.4 -1.7 Flow (cfs) = 5.65 2.20 4.24
8 ft Avg Bottom Loss/Gain, in -0.58 Avg Clopper Soil Loss, in -0.58
Cross-section 5 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 53.7 52.9 51.7 8.5 43.8
To eroded Surface Elev, cm 54 54.5 54.5 Vavg (fps) = 8.50
Soil Loss / Gain, cm -0.3 -1.6 -2.8 navg = 0.027
Clopper Soil Loss, cm -0.3 -1.6 -2.8 Flow (cfs) = 5.87 2.15 4.15
10 ft Avg Bottom Loss/Gain, in -0.62 Avg Clopper Soil Loss, in -0.62
Cross-section 6 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54 54 53.3 9 44.5
To eroded Surface Elev, cm 55.2 56.6 53.5 Vavg (fps) = 9.00
Soil Loss / Gain, cm -1.2 -2.6 -0.2 navg = 0.026
Clopper Soil Loss, cm -1.2 -2.6 -0.2 Flow (cfs) = 6.26 2.17 4.17
12 ft Avg Bottom Loss/Gain, in -0.52 Avg Clopper Soil Loss, in -0.52
Cross-section 7 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54 54 9 44.5
To eroded Surface Elev, cm 55.2 54.7 54.5 Vavg (fps) = 9.00
Soil Loss / Gain, cm -0.7 -0.7 -0.5 navg = 0.025
Clopper Soil Loss, cm -0.7 -0.7 -0.5 Flow (cfs) = 6.08 2.11 4.06
14 ft Avg Bottom Loss/Gain, in -0.25 Avg Clopper Soil Loss, in -0.25
Cross-section 8 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 55.2 54.5 54.8 9 45.6
To eroded Surface Elev, cm 56 56.2 55.5 Vavg (fps) = 9.00
Soil Loss / Gain, cm -0.8 -1.7 -0.7 navg = 0.025
Clopper Soil Loss, cm -0.8 -1.7 -0.7 Flow (cfs) = 6.08 2.11 4.06
16 ft Avg Bottom Loss/Gain, in -0.42 Avg Clopper Soil Loss, in -0.42
Cross-section 9 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.5 54.5 54.5 9 46.7
To eroded Surface Elev, cm 56.2 56.8 56.8 Vavg (fps) = 9.00
Soil Loss / Gain, cm -1.7 -2.3 -2.3 navg = 0.025
Clopper Soil Loss, cm -1.7 -2.3 -2.3 Flow (cfs) = 5.85 2.02 3.90
18 ft Avg Bottom Loss/Gain, in -0.83 Avg Clopper Soil Loss, in -0.83
Cross-section 10 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 54.7 55.8 56.7 9 48.0
To eroded Surface Elev, cm 56.5 59.2 58.2 Vavg (fps) = 9.00
Soil Loss / Gain, cm -1.8 -3.4 -1.5 navg = 0.025
Clopper Soil Loss, cm -1.8 -3.4 -1.5 Flow (cfs) = 5.89 2.04 3.92
20 ft Avg Bottom Loss/Gain, in -0.88 Avg Clopper Soil Loss, in -0.88
Cross-section 11 A B C V @ 0.2d V @ 0.6d V @ 0.8d To Water Surf, cm
To original Surface Elev, cm 58.1 57.4 56.3 9 49.0
To eroded Surface Elev, cm 58.5 59.8 59.5 Vavg (fps) = 9.00
Soil Loss / Gain, cm -0.4 -2.4 -3.2 navg = 0.025
Clopper Soil Loss, cm -0.4 -2.4 -3.2 Flow (cfs) = 6.06 2.10 4.04
Avg Bottom Loss/Gain, in -0.79 Avg Clopper Soil Loss, in -0.79
Soil Loss / Gain, in -0.30 -0.68 -0.52 Avg Bottom Loss/Gain per Cross-Section = -0.50
Clopper Soil Loss, in -0.30 -0.68 -0.52 Avg Clopper Soil Loss per Cross-Section = -0.50
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
Water Depth (in)
Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf)
Bed Max Shear
Stress (psf) Water Depth (in)
CHANNEL 3 - SHEAR STRESS 4
TEST DATA
0.00
EG-2S 3.8 staples / sy
FLOW
2
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
Bed Max Shear
Stress (psf) Water Depth (in)
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Appendix
APPENDIX B – TEST SOIL
Test Soil Grain Size Distribution Curve
Compaction Curves
Veneer Soil Compaction Verification
January 2010
0
10
20
30
40
50
60
70
80
90
100
0.0010.010.1110100
Pe
rce
nt
Fin
er
Particle Size (mm)
DDRF ASTM D 6459 & D 6460 Blended Test Soil
ASTM ASTM D 6459 & D 6460 Target Loam
Plasticity (ASTM D 4318)Liquid Limit: 35Plastic Limit: 30Plastic Index: 5
Soil classifies as a sandy silt (ML) in accordance with ASTM D 2487
Tested by: Tamika Walker
TRI observes and maintains client confidentiality. TRI limits reproduction of this report, except in full, without prior approval of TRI.
9063 Bee Caves Road Austin, TX 78733-6201 (512) 263-2101 (512) 263-2558 1-800-880-TEST
Cheng-Wei Chen, 02/03/10
Quality Review/Date
The testing herein is based upon accepted industry practice as well as the test method listed. Test results reported herein do not apply
to samples other than those tested. TRI neither accepts responsibility for nor makes claim as to the final use and purpose of the material.
Proctor Compaction Test
80
85
90
95
100
105
110
115
120
5 10 15 20 25 30 35 40 45
Moisture Content (%)
Dry
Den
sity
(pcf
)
2.80
2.60
2.70
Project: TRI-DDRF
Sample No.: DDRF Test Soil - January 2010
TRI Log No.: E2337-12-04
Test Method: ASTM D 698 - Method A
Maximum Dry Density (pcf): 98.7
Optimum Moisture Content (%): 20.0
Calibration Date: 8/16/2009
Sand Used: Pool Filter Sand
Volume Measure: Liquid Volume, Vm (cm3): 425
Wt. of Sand to Fill Known Volume:
Total Wt (g) Pan Wt (g) Net Wt (g)
Trial #1 (g) 663.3 11.5 651.8
Trial #2 (g) 661.3 11.5 649.8
Trial #3 (g) 657.3 11.5 645.8
Wa (g) 649.1
Density of Sand, ɣsand (g/cm3) = Wa / Vm = 1.53
Wt. of Sand to Fill Cone:
Total Wt (g) Cone Wt (g) Net Wt (g)
Trial #1 (g) 7046.0 5152.9 1893.1
Trial #2 (g) 7045.3 5152.9 1892.4
Trial #3 (g) 7046.9 5152.9 1894.0
Wt. of Sand in Cone (g): 1893.2
Field Data Date: 2/10/2010
Wt. of Wet Soil + Pan (g) 934.6
Wt. of Dry Soil + Pan (g) 792.4
Wt. of Pan (g) 14.5
Wt. of Wet Soil, W' (g) 920.1
Wt. of Dry Soil (g) 777.9
Wt. of Water (g) 142.2
Water Content, w (%) 18.3%
Sand Used: Pool Filter Sand
Unit Wt. of Sand, ɣsand (g/cm3) = 1.53
Wt. of Jug & Cone Before (g) = 7050.10
Wt. of Jug & Cone After (g) = 4348.33
Wt. of Sand Used (g) = 2701.77
Wt. of Sand in Cone (g) = 1893.17
Wt. of Sand in Hole, W (g) = 808.60
Volume of hole, Vh (cm3) = W / ɣsand = 529.41
Wet density, ɣwet = W' / Vh (kN/m3) = 1.74
Wet density, ɣwet = W' / Vh (lb/ft3) = 108.40
Dry density, ɣdry = ɣwet / [1 + w] (kN/m3) = 1.47
Wet density, ɣwet = W' / Vh (lb/ft3) = 91.65
Max Std. Proctor Dry density (kN/m3) = 98.70
Opt. Moisture via Std. Proctor density (%) = 20.00
Compaction as % of Std. Proctor = 92.9%
Density Calculation:
Compaction Worksheet
ASTM D 1556
Volume Data:
Soil Data:
EG-2S, Double Net Straw Blanket, over Sandy loam - Channel Erosion Testing
June 30, 2010
Appendix
APPENDIX C – ANCHOR PATTERN
X X X
X 3.5 ft X
0.5 ft
X X
X 1 ft X X 2 ft
X X
X X
3.5 ft
X X X
1 ft
Channel Staple Pattern
3.8 staples/sy
APPENDIX D
REPORT REVISION The reported performance values of Permissible Shear and/or Limiting Velocity have been revised to exclude areas exhibiting nonlinear or turbulent flow.
NTPEP ASTM D 6460 Permissible Shear and Velocity Revision to Data Explanation
Testing of Rolled Erosion Control Products (RECPs) is conducted by a number of methods. NTPEP selected ASTM D 6460-07 as a large scale method to determine the performance of these materials with respect to soil loss under concentrated (channel) flow. Upon review, one primary issue was noted in the determination of the permissible shear stress.
Permissible Shear Background The ASTM D 6460-12 standard provides guidelines for evaluating the performance of rolled erosion control products from stormwater-induced erosion, particularly with respect to maximum boundary shear stress. The standard recognizes that the test data typically exhibit non-uniform flow, and calculation of the shear stress must account for non-uniform flow conditions. The standard also recognizes that variability in the raw data can yield inconsistent or inaccurate results due to nonlinear data.
Oversimplified Calculations The ASTM D 6460-12 test method reporting requirements include using a control volume with a minimum length of 20 feet if the water surface and energy grade line exhibit linear behavior over the reach of the control volume. If excess turbulence causes nonlinearity within the raw data yielding inconsistent or inaccurate results, the standard allows alternative methods to quantify shear stress and velocity to be used. Previous reporting of data by the NTPEP lab has taken each channel cross-section as an independent control volume in order to negate the effects of any non-uniform flow conditions and to simplify the calculation of shear stress. Independent consultant review has viewed this as an oversimplification, especially with highly turbulent flows.
Revised Calculations To maintain compliance with the ASTM standard, the full non-uniform flow calculation or an alternative method for data that exhibit nonlinear behavior should be used. To this end, and with the help of the independent consultant and in compliance with the current standard, an alternative calculation method for data that exhibit nonlinear behavior has been developed. The alternative calculation uses linear regression techniques over a representative control volume that is the least turbulent and exhibits linear behavior.
Tests that exhibited turbulent flows required eliminating those nonlinear areas from the calculation. If the remaining linear areas experienced a lower average soil loss than that of the entire test channel, this resulted in a higher permissible shear when recalculated. Alternately, if the remaining linear areas experienced a higher average soil loss than that of the entire test channel, this resulted in a lower permissible shear when recalculated. Flows that were more turbulent, especially the 1-year vegetated tests, resulted in larger differences between the original calculation and the revised calculation. Additionally, NTPEP policy does not allow for extrapolation, so the maximum shear achieved is recorded, even if ½-inch soil loss is not reached. All NTPEP ASTM D 6460 test reports that do not reflect this revised reporting of permissible shear and velocity must be amended.
Impact on End Users For end users of the NTPEP test reports, it is expected that the product approval processes or specification requirements may need to be updated to reflect the updated reporting of permissible shear and/or velocity.
y = 0.2045x1.0757 R² = 0.7656
y = 0.2361x1.0223 R² = 0.7855
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0 1 2 3
Cum
mu
lative
So
il L
oss (
CS
LI)
, in
Shear, psf
Limiting Shear via ASTM D 6460 EG-2S; 3.8 Anchors/SY
Channel # 1 Channel # 2 Channel # 3 All Channels
Original #1 Results Original #2 Results Original #3 Results All Channels - Original
Power (All Channels) Power (All Channels - Original)
Orig. Limiting Shear = 2.1 psf
Limiting Shear = 2.1+ psf
y = 0.0007x3 - 0.0072x2 + 0.0657x R² = 0.915
y = 0.0565x1.0032 R² = 0.7963
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0 2 4 6 8 10 12 14 16 18 20
Cum
mu
lative
So
il L
oss (
CS
LI)
, in
Velocity, ft/sec
Limiting Velocity via ASTM D 6460 EG-2S; 3.8 Anchors/SY
Channel # 1 Channel # 2 Channel # 3 Original #1 Results
Original #2 Results Original #3 Results All Channels All Original Channels
Orig. Limiting Velocity = 8.7 ft/sec
Limiting Velocity = 8.8+ ft/sec