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

Published bySusan Maxwell Modified over 9 years ago

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Presentation on theme: "Patapsco and Back River HSPF Watershed Model Part I - Hydrology Maryland Department of the Environment."— Presentation transcript:

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 useArea (ac) Forest 83,521 Crops(5) 30,795 Pasture 11,353 Urban(Impervious and Pervious)175,977 Total301,673 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

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

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8 USGS Calibration Stations Gwynns Falls (1996 to 1998) Jones Falls (1996 to 1998) Patapsco (1994 to 1995)

9 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

10 Land use distribution and statistical summary

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13 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

14 Land use distribution and statistical summary

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17 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

18 Calibration site for MDE and CBP

19 Land use distribution and statistical summary

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