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SIMULATING WATER DYNAMICS IN STORMWATER DETENTION AREAS/WETLANDS FOR WATER SUPPLY

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  032326,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13835) @2003
Authors:   Fouad H. Jaber, Sanjay Shukla
Keywords:   stormwater detention/retention; water harvesting; integrated hydrologic modeling; MIKE SHE; agricultural drainage; model evaluation; irrigation

Hydrology of an impoundment in agricultural groves in South Florida was studied to assess its potential use as source of water supply. The MIKE SHE integrated hydrologic model was used to simulate the different hydrologic processes and their interactions. The model was calibrated and validated for water levels inside the impoundment and ditch levels outside the impoundment. Model evaluation results showed that the model could effectively be used for assessing water retention alternatives. Several alternatives (structural and managerial) were identified to increase water retention volume and time. The alternatives included no action, lining the impoundment with different liner thickness, lining only the embankment and the inner distribution canal with different liner thickness, and pumping water regularly from the surrounding ditch to the impoundment. Clay lining entire impoundments or just the embankments of impoundments showed a significant increase in stored volume and retention time to the extent that it could supply several weeks of irrigation. Regular pumping also proved to be a promising alternative.

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