The Sanderson Project
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Transcript of The Sanderson Project
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THE SANDERSON PROJECTFinding the S vs. Q relationshipBy: Cody Hudson
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SITES Background Water Resources “Site”
Analysis Program Developed for NRCS Performs hydrologic
and hydraulic analyses of water control structures
Calculates spillway stability
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Single Event Analysis Used to simulate
design storm through existing structures
Calculates Inflow HydrographOutflow HydrographSpillway StabilityStorage/Outflow
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Hydrology (Inflow)
Enter Rainfall or Hydrograph
Calculate SCS Hydrograph based on Basin characteristicsRainfall amountRainfall distribution
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Elevation-Storage
E(S)=Elevation function of storage
dE(S)
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Hydraulics(Outflow) Principal Spillway
Orifice flowWeir flow
L
WD
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Hydraulics(Outflow) Auxiliary Spillway
Open Channel FlowWidthSide SlopeChannel SlopeLengthManning’s n
2/13/2 SARnkQ
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Watershed Schematic
Structure
Reach
UncontrolledSubwatershed
Junction
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Sites ModeloCN=60o6hr 100 year rainfall = 5.11 inoPeak Flow = 10,323 cfs @ 8.6 hr
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Sites ModeloCN=74o6hr 100 year rainfall = 5.11 inoPeak Flow = 18590 cfs @ 6.5 hr
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Site 11
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Questions