hydrology calibration
DESCRIPTION
Hydrology Calibration. Phase 5. Calibrators. USGS-MD Jeff Raffensperger Sarah Martucci Joe Vrabel Angelica Gutierrez Gary Fisher. Calibrators. USGS-VA Doug Moyer Alan Simpson Jen Krstolic ICPRB Ross Mandel Julie Kiang. Calibrators. CBP Sara Brandt Jing Wu Kate Hopkins - PowerPoint PPT PresentationTRANSCRIPT
Hydrology Calibration
Phase 5
Calibrators
• USGS-MD– Jeff Raffensperger– Sarah Martucci– Joe Vrabel– Angelica Gutierrez– Gary Fisher
Calibrators
• USGS-VA– Doug Moyer– Alan Simpson– Jen Krstolic
• ICPRB– Ross Mandel– Julie Kiang
Calibrators
• CBP– Sara Brandt– Jing Wu– Kate Hopkins– Lewis Linker– Gary Shenk
Status
• Consistent with other HSPF calibrations in the literature
• Better and more consistent overall than phase4
• Reaching point of diminishing returns
Strategy
• Water Balance
• Stormflow / Baseflow separation
• Base Flow
• Storm Flow
• Seasonal ChangesAdapted From:
Users Manual for an Expert System (HSPEXP) forCalibration of the Hydrological SimulationProgram—Fortran
By Lumb, McCammon, and Kittle USGS-WRI Report
Statistics to judge overall calibration
• Bias
• Base / Storm separation
• Recession rates
• Model efficiency
Starting Bias
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Ending Bias
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Jan 1
March 1 Bias
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
April 1 Bias
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Baseflow / Stormflow Stat
Fraction of flow that is baseflow (simulated)
Fraction of flow that is baseflow (observed)Bstat = 1 -
baseflow / total flow (observed)Bstat = 1 - baseflow / total flow (simulated)
stormflow / total flow (observed)Qstat = 1 - stormflow / total flow (simulated)
Starting Bstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Ending Bstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Jan 1
March1 Bstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
April 1 Bstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Starting Qstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Ending Qstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Jan 1
March1 Qstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
April 1 Qstat
0
10
20
30
40
50
60
70
80
90
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Baseflow / Stormflow Recession Statistic
average Simulated recession index
average Observed recession indexQ rec Index = 1 -
quick flow todayAverage Recession index = Average (
quick flow tomorrow)
April 1 Average Baseflow Recession
0
20
40
60
80
100
120
140
160
180
200
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
March1 Quickflow Recession Index
0
10
20
30
40
50
60
70
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
April 1 Quickflow Recession Index
0
10
20
30
40
50
60
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Nash – Sutcliffe Model efficiency
(variance of errors)
(variance of observed)
Computed for daily, log of daily,
and monthly values.
1 -
Reported values of N-S efficiency
• Often reported, but little information on ‘standards’ of efficiency
• Reported daily efficiencies 0.5 - 0.75
• Reported daily log efficiencies 0.5 - 0.75
• Reported monthly efficiencies 0.7 – 0.8
Starting Efficiency
0
5
10
15
20
25
30
35
40
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency after bias adjustment
0
5
10
15
20
25
30
35
40
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency after Storm/Base Adjustment
0
5
10
15
20
25
30
35
40
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency after New Diversions
0
5
10
15
20
25
30
35
40
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency as of March 1
0
5
10
15
20
25
30
35
40
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency as of April 1
0
5
10
15
20
25
30
35
40
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Reported values of N-S efficiency
• Often reported, but little information on ‘standards’ of efficiency
• Reported daily efficiencies 0.5 - 0.75
• Reported daily log efficiencies 0.5 - 0.75
• Reported Monthly efficiencies 0.7 – 0.8
Starting Efficiency of Logs
0
5
10
15
20
25
30
35
40
45
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Logs after bias adjustment
0
5
10
15
20
25
30
35
40
45
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Logs after Storm/Base Adjustment
0
5
10
15
20
25
30
35
40
45
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Logs with New Diversions
0
5
10
15
20
25
30
35
40
45
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Logs as of March 1
0
5
10
15
20
25
30
35
40
45
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Logs as of April 1
0
5
10
15
20
25
30
35
40
45
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Reported values of N-S efficiency
• Often reported, but little information on ‘standards’ of efficiency
• Reported daily efficiencies 0.5 - 0.75
• Reported daily log efficiencies 0.5 - 0.75
• Reported Monthly efficiencies 0.7 – 0.8
Efficiency of Monthly Flow with new diversions
0
10
20
30
40
50
60
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Monthly Flow as of March 1
0
10
20
30
40
50
60
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Efficiency of Monthly Flow as of Apr 1
0
10
20
30
40
50
60
-103% -83% -63% -43% -23% -3% 18% 38% 58% 78% 98%
Parameter Values
INFILT AGWR INTFW IRC AGWETPmin 0.009 0.867 0.5 0.12 0.0010th 0.041 0.954 1.0 0.25 0.0025th 0.045 0.965 1.0 0.30 0.01median 0.072 0.974 1.0 0.38 0.0575th 0.117 0.979 2.5 0.46 0.0590th 0.176 0.983 3.5 0.60 0.05max 0.337 0.995 5.0 0.85 0.12
Where are we in relation to p4
• Better overall
• More consistent parameterization
• Calibrated at many more sites
Phase 5 vs Phase 4 Efficiencies
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Phase 4
Pha
se 5
Phase 5 vs Phase 4 Log Efficiencies
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.4 0.5 0.6 0.7 0.8 0.9
Phase 4
Pha
se 5
Status
• Consistent with other HSPF calibrations in the literature
• Better and more consistent overall than phase4
• Reaching point of diminishing returns
• Still a few small areas and issues that need attention in hydrology
Ready for Sediment?
• River calibration cannot change significantly
• Land calibration must have significant surface runoff
percent of days with surface runoffmin 26%10th 28%25th 30%median 32%75th 35%90th 38%max 48%
Work Plan
• Hydrology Group ( 2/3 of group )– Consistent parameterization– Better reservoirs– Data Issues– Local hydrology issues
• Sediment Group ( 1/3 of group )– Begin land and river sediment calibration
Sediment Calibration
• Land– Long-term average washoff calibrated to NRI
by county
• River– Calibrated to in-stream data– About 80 stations
Land Sediment Simulation
Detached Sediment
Att
achm
ent
= k3 * (Detached sediment)
= X lb/day
Input
storage
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0 50 100 150 200
j1= k1*RO (RO + Storage)
Land Sediment Simulation
Detached Sediment
Soil Matrix(unlimited)
Wash off
Det
achm
ent
= (1-cover) * k2 (Rain)j2
Land Sediment Simulation
Detached Sediment
Soil Matrix(unlimited)
Wash off
Det
achm
ent
= (1-cover) * k2 (Rain)j2
j1= k1*RO (RO + Storage)
critz
w
eMass
1
1
River Cohesive Sediment Simulation
SuspendedSediment
Bed Storage(unlimited)
Outflow
Sco
ur
Dep
osit
ion
Inflow
1*
crit
AreaM