EIS Hydrology Model Inputs and Outputs

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EIS ITYDROLOGY MODEL OUTPUTS Monthly models, units for water related outputs are typically in Thousands of Acre-FeetJMonth (kaf) or CFS/Month. The EIS is using the 1947•-1994 period of record adjusted to `Present Conditions' River Flows at Key Gaging Station Locations Time Series (Month by Month, Year by 'Year) Flow Duration (Percentage basis) Instream Flows between Overton and Grand Island, NE Instream Flow Shortage (amount less than target instream flow) Instream Flow Excess (amount above target instream flow) Reservoir Information North Platte River Seminoe, Kortes, Pathfinder, Alcova, Gray.Reef, Glendo, Guersney ?? ?e-5- North Platte/Central Platte River McConaughy, Sutherland, Elwood South Platte River Milton, Empire, Riverside, Jackson, North Sterling, Prewitt, Julesburg sl I ? t t, a?C, .YJ?,- (output is typically in time series, can be displayed on a Duration basis) Reservoir elevation, ft Reservoir Contents, kaf Reservoir Inflow/Outflow Reservoir Evaporation/Seepage Loss Project Ownership Environmental Accounts (contents, inflows, releases, evap/seep) Reservoir Spill Irrigation Diversions North Platte River Individual Canal diversions are typically shown; Storage vs Natural Flow North Platte/Central Platte River Cana1 Diversions are typically `lumped' into river reaches; Total Diversion Keystone-Sutherland, Sutherland-North Platte, Brady-Cozad, Central District Canal, Kearney Canal, Western Canal South Platte River 41 Different model `demands' are used to represent 56 ditches and 7 reservoirs between Henderson and Julesburg Power Generation, MKWh USBR Power Plants in Wyoming Kingsley Hydro North Platte Hydro Central District Canal Hydros (Jeffrey, ,Johnsonl, Johnson2) Bypassed Generation (spill) January 21, 2000 Platte River Governance Committee Meeting, North Platte, NE