the dwrc ud water program: silver brook watershed plan
TRANSCRIPT
1. Delineate watershed boundary for Silver Brook
• Map based on flow directions, topography, and stormwater
drainage systems from GIS.
2. SWMM Modeling - Current Conditions
• Enter the Newark stormwater drainage system.
• Enter precipitation data for selected storms.
3. SWMM Modeling - Future Conditions
• Add stormwater park to replace Rodney Dorms, daylighting of
Silver Brook, and enlarge pipe sizes.
• Re-run model simulations to obtain results of modifications and
determine where flooding occurs as compared to original model.
Gemma Antoniewicz1, Norma Brasure2, Clare Sevcik3,
1Environmental Science Major, College of Earth, Ocean, and Environment 2Environmental Engineering Major, Department of Civil and Environmental Engineering
3Environmental Science Major, College of Agriculture and Natural Resources
We would like to acknowledge UD WATER and The Delaware Water Resources Center for
funding this project. In addition, we would like to thank the UD WATER team for their guidance
and support throughout this project, especially:
The UD WATER Project (Watershed Action Team for Ecological
Restoration) is a university-wide initiative which seeks to develop
management techniques to minimize the environmental impacts of
stormwater runoff from campus. For more information, visit our website
at www.udel.edu/water.
Project Objectives
The DWRC UD WATER Program:
Silver Brook Watershed Plan
Results
Acknowledgements
What is UD WATER?
Methods
Conclusions
Figure 6.Norma Brasure (left) and Gemma Antoniewicz (right) observing the low flow and high flow drainage system at STAR campus. (Photo credit Clare Sevcik)
Figure 1. Possible Silver Brook stream corridor through STAR campus.
Gerald Kauffman (Director UD Water Resources
Center)
Andrew Homsey (UD Water
Resources Center)
Maria Pautler (Research Associate, Plant & Soil
Sciences)
Kelly Dinsmore (Water and Public
Works Dept.)
Stacey Chirnside (UD Dept. of Entomology
and Wildlife Ecology)
Dave Levandoski (1743 Holdings,
LLC)
Figure 4. The Silver Brook storm watershed with flooding during a 10-year storm with the size of the red highlight corresponding
to the number of nodes that are flooded.
Figure 5. The Silver Brook storm watershed with a proposed
stormwater park (blue), enlarged pipes (orange), and daylighted
stream (green) on the STAR campus. Flooding areas for a 10-year storm are highlighted in red.
0
20
40
60
80
100
120
140
160
24-Feb-16 2-Year Hurricane Sandy 10-Year 100-Year
Flo
od
Vo
lum
e (1
06
gallo
ns)
Rain Event
Differences Between Rain Events in Runoff and Flood Volumes
Silver Brook Watershed, Newark, DE
Total Runoff
Total Flood Volume
0
1
2
3
4
100 106 209 214 217 274 276 277 278 280 282 283 285 295
Flo
od
Vo
lum
e (
10
6g
allo
ns)
Node
Total Volume of Node Flooding During a 10-Year Storm Event
Silver Brook Watershed, Newark, DE
Current Conditions
Stream and Waterpark
Stream, Stormwater Park, and Pipes
Node 100 flood volume was 8.6 million gallons
0
5
10
15
20
100 106 209 214 217 274 276 277 278 280 282 283 285 295
Ho
urs
Flo
od
ed
Node
Total Number of Hours Flooded During a10-Year Storm Event
Silver Brook Watershed, Newark, DE
Current Conditions
Stream, Stormwater Park, and Pipes
Figure 8. Total volume of runoff and flood volume from the 15subcatchments within Silver Brook storm watershed for various floodevents.
Figure 9. Flood volume for the SWMM model in the Silver Brook stormwatershed.
Figure 7. Hours of flooding during 10-year storm event in the Silver Brookstorm watershed.
1. Delineate storm watershed for Silver
Brook.
2. Analyze the runoff within Silver Brook
storm watershed by modeling its drainage
system through use of the Environmental
Protection Agency’s Storm Water
Management Model (EPA SWMM).
3. Propose a plan to decrease flooding on UD
Campus and surrounding City of Newark.
4. Assess reduction in flooding by modeling a
stormwater park at the Rodney Dorms,
replacing pipes, and daylighting Silver
Brook on STAR campus.
Figure 2. City of Newark proposed plan for stormwater park on the site of Rodney Dorms.
Figure 3. Proposed landscape of daylighting.