| |
Communication at the NABS Annual meeting, Keystone, 2000
(445) NUTRIENT TRANSPORT MODELING IN THE LAKE EUCHA BASIN.
D. Gade1, D.E. Storm1, M. Smolen1, and M. Gregory2. 1Dept. Biosystems and Agricultural Engineering Oklahoma State University, 2Dept. Plant and Soil Sciences Oklahoma State University
A potential impact of the booming poultry industry in northeast Oklahoma and northwest Arkansas is off-site water quality degradation from the use of poultry litter as fertilizer on permanent pasture. Lake Eucha, which serves as a water supply for the City of Tulsa, has shown reduced water quality that requires expensive additional treatment. This project models the transport of nutrients from upland areas to Lake Eucha using SWAT. SWAT is a basin-scale model “... developed to predict the impact of land management practices on water, sediment, and agricultural chemical yields in large complex watersheds with varying soils, land use and management conditions over long periods of time” (Neitsch et al., 1999). SWAT requires detailed digital data for weather, soil properties, topography, vegetation, and land management. Thirty-meter data layers were collected for soils, land use/land cover, and elevation. Soil fertility data were collected to provide accurate initial soil nutrient levels. Our modeling assesses the impact of varying land use activities and alternative management scenarios on nutrient loading to Lake Eucha. These data are combined with point source loading to set Total Maximum Daily Loads (TMDLs) to achieve local water quality goals.
Presented at 1:00 PM on Wednesday, May 31, 2000 in Landscape Perspectives
|
|
