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Sensitivity of ADAPT model predictions of streamflows to parameters used to define hydrologic response units
The responses of ADAPT, a daily water table management simulation model, to variations in the principal input parameters which define hydrologic response units on a watershed was evaluated. The study was conducted on a small agricultural watershed in Ohio. The results suggest that useful estimates of monthly flows could be obtained by using NRCS soils information, land use, and tillage information estimated from Landsat TM data, a 30-meter digital elevation model, and readily available information on the prevailing farming systems. Water quality and quantity responses were sensitive to combinations of the slope, soil type, land use, tillage, crop rotations, and drainage practice and should be taken into account in defining the hydrologic response units. The sediment load predictions were sensitive to the field size. Approximations of when planting occurred did not affect the flow and sediment predictions but had an impact on nitrate and pesticide predictions.
Sensitivity of ADAPT model predictions of streamflows to parameters used to define hydrologic response units
The responses of ADAPT, a daily water table management simulation model, to variations in the principal input parameters which define hydrologic response units on a watershed was evaluated. The study was conducted on a small agricultural watershed in Ohio. The results suggest that useful estimates of monthly flows could be obtained by using NRCS soils information, land use, and tillage information estimated from Landsat TM data, a 30-meter digital elevation model, and readily available information on the prevailing farming systems. Water quality and quantity responses were sensitive to combinations of the slope, soil type, land use, tillage, crop rotations, and drainage practice and should be taken into account in defining the hydrologic response units. The sediment load predictions were sensitive to the field size. Approximations of when planting occurred did not affect the flow and sediment predictions but had an impact on nitrate and pesticide predictions.
Sensitivity of ADAPT model predictions of streamflows to parameters used to define hydrologic response units
Gowda, P. (author) / Ward, A. (author) / White, D. (author) / Lyon, J. (author) / Desmond, E. (author)
Transactions of the ASAE ; 42 ; 381-389
1999
9 Seiten, 47 Quellen
Article (Journal)
English
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