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Research ArticleResearch Section

Conservation Effects Assessment Project research in the Leon River and Riesel watersheds

R.D. Harmel, C.G. Rossi, T. Dybala, J. Arnold, K. Potter, J. Wolfe and D. Hoffman
Journal of Soil and Water Conservation November 2008, 63 (6) 453-460; DOI: https://doi.org/10.2489/jswc.63.6.453
R.D. Harmel
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C.G. Rossi
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T. Dybala
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J. Arnold
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K. Potter
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J. Wolfe
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D. Hoffman
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Abstract

The Leon River basin was selected as a benchmark watershed for the Conservation Effects Assessment Project to complement the historical USDA Agricultural Research Service experimental watersheds near Riesel, Texas. Excessive nutrient and bacteria concentrations contributed by agricultural, urban, and natural sources are the primary water quality concerns. Modeling and field evaluations of the hydrologic impact and soil and water quality response to tillage and nutrient management practices are the primary research themes of this project. Water quality data from 15 Leon River watersheds (0.3 ha [0.75 ac] to 6,070 km2 [2,340 mi2]) and 13 Riesel watersheds (1.2 ha [3.0 ac] to 70.4 ha [174 ac]) has improved modeling of phosphorus transformation and transport routines. Modeling research also coupled field- and farm-scale model output to improve the basin-scale Soil and Water Assessment Tool (SWAT) for the national assessment of conservation practices. Additional key products of Conservation Effects Assessment Project research include innovative erosion control methods on military lands, enhanced carbon sequestration estimates for various agricultural land uses, and improved understanding of environmental and economic impacts of organic fertilizer application.

Footnotes

  • R. Daren Harmel is an agricultural engineer for USDA Agricultural Research Service (ARS), Temple, Texas. Colleen Green Rossi is a soil scientist for the USDA ARS, Temple, TX. Tim Dybala is a civil engineer for the USDA Natural Resources Conservation Service, Temple, Texas. Jeff Arnold is a supervisory agricultural engineer and Ken Potter is a soil scientist for the USDA ARS, Temple, Texas. June Wolfe is an assistant research scientist and Dennis Hoffman is a senior research scientist at the Texas AgriLife Research, Temple, Texas.

  • © 2008 by the Soil and Water Conservation Society

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Journal of Soil and Water Conservation: 63 (6)
Journal of Soil and Water Conservation
Vol. 63, Issue 6
November/December 2008
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Conservation Effects Assessment Project research in the Leon River and Riesel watersheds
R.D. Harmel, C.G. Rossi, T. Dybala, J. Arnold, K. Potter, J. Wolfe, D. Hoffman
Journal of Soil and Water Conservation Nov 2008, 63 (6) 453-460; DOI: 10.2489/jswc.63.6.453

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Conservation Effects Assessment Project research in the Leon River and Riesel watersheds
R.D. Harmel, C.G. Rossi, T. Dybala, J. Arnold, K. Potter, J. Wolfe, D. Hoffman
Journal of Soil and Water Conservation Nov 2008, 63 (6) 453-460; DOI: 10.2489/jswc.63.6.453
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