Chapter
Apr 26, 2012
Springshed Mapping in Support of Watershed Management
Authors: Jeffrey A. Green [email protected], Scott C. Alexander [email protected] and [email protected], and E. Calvin Alexander, Jr. [email protected] and [email protected]Author Affiliations
Publication: Sinkholes and the Engineering and Environmental Impacts of Karst
Abstract
Fillmore County has been the focal point of dye tracing efforts in Minnesota for several decades. In 1995, a 1:100,000, county-scale springshed map was published. At the county scale, we primarily delineated springsheds greater than 500 hectares. After that project was completed, dye-tracing efforts continued and focused on the South Branch Root River (SBRR) springshed in the western part of the county. At the scale of the SBRR springshed (about 20% of the county), we expanded the boundaries of the large springsheds but also located and refined the boundaries of springsheds that are less than 200 hectares. We found one previously unmapped small springshed (Meyers springshed), documented complex flow boundaries between a large springshed (11. Canfield) and an adjacent small springshed (26. Rainy), and expanded the boundaries of four other springsheds. The small springsheds present a new opportunity for karst watershed research, monitoring and management. The small springsheds are often dominated by one or a few land uses, which permit simpler, more evident identification of the causes of water quality degradation.
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© 2005 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Minnesota Department of Natural Resources, Division of Waters, 2300 Silver Creek Road NE, Rochester, MN 55906. E-mail: [email protected]
Geology & Geophysics Department, University of Minnesota, 310 Pillsbury Dr. SE., Minneapolis, MN 55455. E-mail: [email protected] and [email protected]
Geology & Geophysics Department, University of Minnesota, 310 Pillsbury Dr. SE., Minneapolis, MN 55455. E-mail: [email protected] and [email protected]
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