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WATER BUDGET ANALYSIS FOR THE EVERGLADES AGRICULTURAL AREA DRAINAGE BASIN 1
Author(s) -
Abtew Wossenu,
Khanal Nagendra
Publication year - 1994
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1994.tb03302.x
Subject(s) - surface runoff , environmental science , hydrology (agriculture) , drainage , water quality , drainage basin , structural basin , irrigation , surface water , soil water , water table , phosphorus , ecology , geography , geology , environmental engineering , groundwater , biology , soil science , paleontology , geotechnical engineering , cartography , materials science , metallurgy
Water budget studies are essential for water resources and environmental management. In this study, a water budget analysis is presented for the Everglades Agricultural Area (EAA) in South Florida for the period from 1973 to 1991. The EAA is a highly productive irrigation/drainage basin that has a high water table and organic soils. Water quality problems are associated with the drainage discharge from the basin. During dry periods, supplemental water is used for irrigation and in rainy periods excess water with relatively higher phosphorus content is pumped out of the basin to Lake Okeechobee and the Everglades ecosystem. Elevated concentrations of phosphorus in the runoff/drainage that is discharged from the EAA basin have created water quality problems. The mean surface water inflow to the basin was 63,990 ha‐m, and the outflow was 131,447 ha‐m per year. On the average, supplemental surface water use was 47,411 ha‐m, and runoff/drainage was 114,816 ha‐m per year. The mean annual basin rainfall was 120.9 cm. A general trend in the decline of the wet season rainfall is observed.