Assessing channel-forming characteristics of an impacted headwater stream in Ohio, USA |
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Authors: | Rebecca M Gorney Lance R Williams |
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Institution: | a The Rubenstein School of Environment and Natural Resources, 3 College St., University of Vermont, Burlington, VT 05401, United States b Soil Science Programs Coordinator, Soil Science Society of America, 5585 Guilford Road, Madison, WI 53711-5801, United States c Department of Food, Agricultural and Biological Engineering, 590 Woody Hayes Dr., The Ohio State University, Columbus, OH 43210, United States d Department of Biology, 3900 University Boulevard, University of Texas at Tyler, Tyler, TX 75799, United States |
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Abstract: | Since the start of European settlement in Ohio the landscape has been greatly modified to accommodate anthropogenic land uses. This, in turn, has altered the hydrologic characteristics of many streams from those that are stable channel systems in dynamic equilibrium to those of modified incised channels that are more characteristic of anthropogenic influences. As stream restoration practices gain importance and prevalence there is a need to prioritize project funds based on the restoration potential of a stream. Regional curves that relate channel-forming geometry to drainage area, and applications of channel-forming discharge concepts, are tools that are used in making restoration and management decisions. Regional curves are usually developed for unmodified natural streams and/or gaged river systems and not for small, ungaged modified channels that are common throughout agricultural areas or mixed use watersheds. This study focuses on the development and potential usefulness of regional curves and channel-forming discharge concepts for Mac-o-chee Creek, a small, ungaged headwater stream system in Ohio. Results show that these approaches and a weight of evidence analysis could be useful in providing information for management and restoration decisions on these small stream systems as well as aiding in the assessment and modeling of trends within these streams with dynamic hydrologic conditions due to changes in land use/land cover. |
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Keywords: | Hydraulic geometry Regional curve Ungaged headwater stream Channel-forming discharge Stream geomorphology Restoration potential |
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