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Patapsco and Back River HSPF Watershed Model

Patapsco and Back River HSPF Watershed Model. Part I - Hydrology Maryland Department of the Environment. Hydrology. Land Use Precipitation/Meteorological Data USGS Calibration Stations Hydrology Calibration. Land use. 11 Land uses simulated Land use Area (ac)

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Patapsco and Back River HSPF Watershed Model

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  1. Patapsco and Back River HSPF Watershed Model Part I - Hydrology Maryland Department of the Environment

  2. Hydrology • Land Use • Precipitation/Meteorological Data • USGS Calibration Stations • Hydrology Calibration

  3. Land use • 11 Land uses simulated Land use Area (ac) Forest 83,521 Crops(5) 30,795 Pasture 11,353 Urban(Impervious and Pervious) 175,977 Total 301,673 • Maryland Office of Planning (1997) • Farm Services Agency and Agricultural Census data

  4. Precipitation • Baltimore Washington International Airport (BWI) NOAA Station 180465 • Hourly data since 1979

  5. Advantages Quality of Data No disaggregation Reduces averaging of rainfall intensity Station located in urban section of watershed Disadvantages No spatial variability of rainfall Precipitation • Meteorological data obtained from CBP Watershed Model (Region V)

  6. USGS Calibration Stations • Gwynns Falls (1996 to 1998) • Jones Falls (1996 to 1998) • Patapsco (1994 to 1995)

  7. Gwynns Falls Calibration • Land use Distribution • Daily Time Series • Cumulative Flow Volume • Daily Flow Frequency • Monthly Time Series • Seasonal Time Series • Annual Time Series • Summary Statistics

  8. Land use distribution and statistical summary

  9. Jones Falls Calibration • Land use Distribution • Daily Time Series • Cumulative Flow Volume • Daily Flow Frequency • Monthly Time Series • Seasonal Time Series • Annual Time Series • Summary Statistics

  10. Land use distribution and statistical summary

  11. Patapsco Calibration(compared with CBP calibration) • Land use Distribution • Daily Time Series • Cumulative Flow Volume • Daily Flow Frequency • Monthly Time Series • Seasonal Time Series • Annual Time Series • Summary Statistics

  12. Calibration site for MDE and CBP

  13. Land use distribution and statistical summary

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