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CEE 542: Computational Watershed Hydrology Term Project Progress Report by Yamen M Hoque

CEE 542: Computational Watershed Hydrology Term Project Progress Report by Yamen M Hoque 10/08/2009. Used a 30m Raw DEM Mean elevation 253m, Std. Dev. 21m. Watershed area is approximately 400,000 hectares Delineated into 43 subbasins Used a threshold of 1% (4000 hectares).

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CEE 542: Computational Watershed Hydrology Term Project Progress Report by Yamen M Hoque

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  1. CEE 542: Computational Watershed Hydrology Term Project Progress Report by Yamen M Hoque 10/08/2009

  2. Used a 30m Raw DEM • Mean elevation 253m, Std. Dev. 21m

  3. Watershed area is approximately 400,000 hectares • Delineated into 43 subbasins • Used a threshold of 1% (4000 hectares)

  4. Landuse classification done based on NLCD 2001 • Dominated by agricultural land type (ranges, pastures, etc) • Some concentrated urban areas • Forests interspersed throughout the watershed

  5. Soil data obtained from SSURGO • Mostly comprised of soils from HSG C & D • Poorly drained

  6. Hydrologic Response Units (HRUs) created • Each HRU is a unique combination of soil type, land cover type and slope • % Threshold of 15/15/20 used for soil/land/slope respectively • Total number of HRUs in watershed: 231

  7. Future Work • Need to incorporate precipitation/temperature data • Data from 13 weather stations (one per county) has been gathered • Once incorporated, SWAT can be run • Some calibration work (not sure about this yet) • Input climatic disturbances such as percentagewise change in precipitation/temperature • Observe how this affects outflow from watershed outlet • Also observe effect on outflow for different subwatershed delineation configurations • Look at effect of land cover changes (if time permits)

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