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Warnell School of Forestry and Natural Resources

Joan V. Schneier

Effects of forest harvesting on hydrology and sediment transport

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Many states recommend the use of best management practices (BMPs) to reduce non-point source pollution that might occur during forestry practices. There are many studies that look at BMP effectiveness, but few have concentrated on forestry impacts in headwater streams. Georgia BMPs have been designed for the entire state, but no region specific or site specific (headwater) BMPs have been developed. Using a paired watershed study design, four adjacent watersheds (28-49 hectares) were chosen for there similar size, aspect, hydrology and geology. Two watersheds have remained as a reference and two have undergone treatments. Treatments include clearcut harvesting and partial thinning of streamside management zones (SMZs) in accordance with Georgia BMPs, mechanical site preparation and planting. Water quality is analyzed based on storm flow and base flow conditions and analyzed for nutrient and suspended sediment loading. This study is designed to evaluate the efficacy of Georgia BMPs for small scale upland forestry practices.
Contributors : S. Terrell, C.R. Jackson, M. Miwa
Last modified Thu, 26 Oct 2006 11:51:48 +0000