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Item 19 June 2006 Dye Trace of the Cave Farm Blind Valley Stream Sink (MN23:B0058)(2006-08) Costello, Daniel E; Alexander Jr., E. CalvinA qualitative fluorescent dye trace has established that water sinking in the Cave Farm Blind Valley resurges at Bly’s Spring on Bear Creek in Fillmore County, Minnesota. This trace establishes the resurgence point for the Cave Farm Blind Valley and a lower limit of > 1 kilometer per day on the groundwater flow velocity. This trace documents the potential impact of a break in the British Petroleum pipeline, which is directly below the blind valley, could have on the Spring Valley karst. The Spring Valley karst also may act as an underground flow path that pirates water from Deer Creek to Bear Creek.Item Crystal Creek Dye Trace Report Fillmore County, Minnesota(2017-05) Kuehner, Kevin J; Green, Jeffrey A; Barry, John D; Rutelonis, J. Wes; Wheeler, Betty J; Kasahara, Sophie M; Luhmann, Andrew J; Alexander Jr., E. CalvinItem Hydrology of Goliath’s Cave, Fillmore County, Minnesota(2007) Maas, Benjamin J; Green, Jeffrey A; Alexander Jr., E. Calvinhttps://gsa.confex.com/gsa/2016AM/webprogram/Paper283919.htmlItem Shady Creek 13 Nov 2012 Dye Trace Report Fillmore County, Minnesota(2017-04-20) Ustipak, Kelsi R; Green, Jeffrey A; Wheeler, Betty J; Alexander Jr., E. CalvinItem Spring Characterization Methods & Springshed Mapping(Proceedings of the 11th Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst. © 2008 American Society of Civil Engineers. Published online: June 20, 2012, 2008-09-26) Alexander, Scott C; Luhmann, Andrew J; Alexander Jr., E. Calvin; Green, Jeffrey A; Peters, Andrew JSoutheastern Minnesota's karst lands support numerous trout streams created by coldwater springs emanating from Paleozoic bedrock. While trout streams have been traditionally managed as surface water resources they are fundamentally supported by clear, relatively constant temperature groundwater. In karst areas this groundwater resource is as vulnerable as surface waters to human activities. Designing Best Management Practices (BMPs) to protect groundwater fed springs should improve the overall protection of Minnesota's trout streams. Dye tracing has been the tool of choice for mapping the recharge area or groundwater basin that feed a particular spring. These karst groundwater basins have been termed "springsheds". In order to accelerate springshed mapping, a two~year study was funded by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR). To improve the effectiveness of dye tracing we are applying a variety of new tools to increase our knowledge of the underlying karst systems. Techniques being investigated include temperature and discharge monitoring, detailed structural mapping of the aquifers, unit hydrographs, chemical and isotopic studies. These new methods to define the size and geometry of springsheds can be tested against basins previously defined by dye tracing. In previously untraced basins these predictive tools can be used to design more efficient tracing programs. The following paper demonstrates the application of structural mapping to dye tracing.Item Spring Valley Caverns Dye Traces Report, Initiated on 20 May 2006(2017-03-27) Alexander, Scott C; Wheeler, Betty J; Alexander Jr., E. CalvinItem Springdale Dye Traces 2016 Olmsted County, MN(2017-03-31) Larsen, Martin R; Green, Jeffrey A; Kasahara, Sophie M; Wheeler, Betty J; Alexander Jr., E. CalvinItem Springshed Mapping in Support of Watershed Management(Proceedings of the 10th Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst. © 2005 American Society of Civil Engineers. Published online: April 26, 2012, 2005-09-28) Green, Jeffrey A; Alexander, Scott C; Alexander Jr., E. CalvinFillmore 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.Item Stone Barn Dye Trace Report Fillmore County, Minnesota(2017-05) Green, Jeffrey A; Alexander Jr., E. Calvin; Alexander, Scott C; Rutelonis, J. WesItem The Underground Rivers of Mystery Cave(1996) Alexander Jr., E. Calvin