Conjunctive Use of Surface and Groundwaterby C. Gallardo, New Mexico State Univ, United States,
Z. Samani, New Mexico State Univ, United States,
T. Sammis, New Mexico State Univ, United States,
Abstract: A computer model was developed by T. Sammis and Z. Samani to simulate the conjunctive use of surface and groundwater. The model consisted of a groundwater simulation subroutine and a crop yield simulation subroutine which run simultaneously. The objective of this study was to demonstrate the application of a computer model in calculating the optimum drain spacing and improving water management. Lab experiments were conducted to measure the upward flux and height of capillary rise from the water table under different initial moisture contents. The model was run to calculate optimum drain spacing under a close water table condition. The application of the model in irrigation water management was demonstrated by calculating the amount of groundwater contribution at different stress levels. The amount of irrigation water requirement was also calculated under different stress levels.
Subject Headings: Computer models | Water table | Water resources | Hydrologic models | Drainage | Water supply | Spacing
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