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Load Estimation Using Soil and Water Assessment Tool (SWAT)

Load Estimation Using Soil and Water Assessment Tool (SWAT). SWAT evaluates impacts of land use, management, and climate on hydrology and water quality It is a very widely used model Applied in every state and 32 different countries. Watershed Model: Soil and Water Assessment Tool (SWAT). +.

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Load Estimation Using Soil and Water Assessment Tool (SWAT)

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  1. Load Estimation Using Soil and Water Assessment Tool (SWAT)

  2. SWAT evaluates impacts of land use, management, and climate on hydrology and water quality It is a very widely used model Applied in every state and 32 different countries Watershed Model: Soil and Water Assessment Tool (SWAT)

  3. + Land Use Soils Hydrologic Response Unit (HRU) Land Management Practices • Streamflow • Groundwater • Surface Water • Evapotranspiration • Suspended Solids • Nitrogen • Phosphorus • Pesticides

  4. Evaporation and Transpiration Hydrologic Balance Precipitation Surface Runoff Root Zone Infiltration/plant uptake/ Soil moisture redistribution Lateral Flow Vadose (unsaturated) Zone Revap from shallow aquifer Percolation to shallow aquifer Shallow (unconfined) Aquifer Return Flow Confining Layer Flow out of watershed Deep (confined) Aquifer Recharge to deep aquifer

  5. Why do we need SWAT? SWAT can help answer various “what if” questions related to impacts of agricultural and urban land use and management on runoff, sediment, nutrient, pesticide and bacteria transport

  6. Station 36

  7. Nitrate Loads

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