Browsing by Subject "watersheds"

Now showing 1 - 12 of 12
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    Alexandria Lakes Area Lake Plan.
    (2003) Douglas County Land; Resource Management et al
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    Coastal Area Impervious Surface Assessment.
    (Duluth, MN: Center for Community and Regional Research, University of Minnesota at Duluth., 2005) Stark, Stacey L; Schomberg, Jesse
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    Computer Programs in Hydrology
    (Water Resources Research Center, University of Minnesota, 1972-01) Bowers, C. Edward; Larson, Steven P.; Pabst, Arthur
    Many computer programs in the field of hydrology are developed each year and are playing an increasingly important part in both research and design activities in hydrology. Many of these programs are available for use by other agencies, organizations, and individuals. The study of which this report is a part was undertaken to review available programs in hydrology and to provide information on representative programs. Information ranging from the title only of the program to listings, source decks, and documentation was reviewed for about 200 programs. Of these, 25 were selected for operation on a CDC 6600 computer and/or preparation of an abstract. The report discusses problems associated with adapting programs to a given computer and with understanding the technical procedure on which the program was based.
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    Efficient Algorithms for Geographic Watershed Analysis
    (2012-07-03) Barnes, Richard; Lehman, Clarence; Mulla, David; Galzki, Jacob; Wan, Haibo; Nelson, Joel
    This project is to analyze where wetlands and other vegetated buffers can be placed on the landscape to intercept drain waters and help purify them before they reach the natural watershed. The computational problem comes because new LIDAR images have expanded the resolution of geographic digital elevation models (DEMs) up to a thousandfold or more. This in turn has taxed the ability of existing algorithms to process the expanded datasets. Here we explain the project and present new efficient algorithms for parallel and scalar processing that reduce run-times from days on ordinary computers to minutes or second using the new algorithms in a parallel supercomputing environment.
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    Environmental Studies in the Lake Superior Watershed: An Annotated Bibliography.
    (Duluth, MN: Center for Community and Regional Research, University of Minnesota at Duluth., 2002) Environmental Studies Capstone Seminar Students at the University of Minnesota at Duluth, under the direction of Martin Nie; Nie, Martin
    This annotated bibliography was compiled and written by students in ES 5001 - Environmental Studies Capstone Seminar at the University of Minnesota at Duluth. Each student was responsible for finding and reviewing articles, preferably from peer-reviewed scholarly journals, that addressed an environmental issue important to the Western Lake Superior Watershed, with a particular focus on northern Minnesota, northern Wisconsin, the Upper Peninsula of Michigan, and western Ontario, Canada. The goal of the project was to take an initial step at documenting what environmental research has been done in this geographic area.
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    Guidebook for Lake Associations: How Lakes Work, Lake Association Organization, Problem Solving.
    (Brainerd, MN: Minnesota Lakes Association., 1998) Minnesota Lakes Association
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    Nutrient Pathways to Stocking Lake: Investigating Phosphorus Sources from Septic Systems, Shorelands, and Agricultural Fields from a Sub-watershed Perspective
    (2010-06-30) Terry, Karen; Brown, Laurie; Rosen, Carl
    This project will develop and test an integrated model to address water quality issues related to phosphorus in lakes, using a sub-watershed approach. Phosphorus sources from shoreland properties, septic systems and agricultural lands will be identified, and BMPs to decrease phosphorus inputs will be developed and shared with watershed residents.
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    Sustainable Lakes Planning Workbook: A Lake Management Model.
    (2000) Minnesota Lakes Association
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    Water Quality and Land Use Relationships in the St. Louis Bay Area of Concern: A Study of Three Urban Watersheds in Duluth, Minnesota.
    (Center for Community & Regional Research, College of Liberal Arts, University of Minnesota, Duluth., 1996) Fredrickson, Brian L; Tobin, Graham A
    European settlement and industrialization has profoundly changed the water quality and aquatic ecosystems of the Great Lakes and its tributaries. Virtually untreated municipal and industrial wastes were dumped into the Lakes from the late 1800s to 1960. Fisheries were exploited and forests were felled to provide growing Great Lakes communities with agricultural land and wood products. In the 1970s, an era of environmental consciousness was ushered in with the passage of the Clean Water Act and the signing of the Great Lakes Water Quality Agreement. Significant water quality improvements were achieved under these authorities through regulatory and voluntary point source pollution control programs. In spite of these successes, however, water quality remains impaired in many parts of the Great Lakes and its tributaries. These impairments are due in part to the plethora of diffuse or non-point sources of pollution. This report explores linkages between water quality, land use, environmental law, and the geological characteristics of three small urban watersheds in Duluth, Minnesota. The three urban watersheds, Miller Creek, Knowleton Creek, and Kingsbury Creek, reported in this study were selected because they contain different land use patterns. Water quality data suggest that pollutants found in national storm water studies were also in evidence in the most developed watershed, Miller Creek, while trace metal concentrations were generally lower in all three watersheds. Suspended solids concentrations in the Miller Creek Watershed of 117 to 254 mg/I indicate a rapidly developing drainage basin. Significant gaps were also detected between the purpose and applicability of key environmental and water resource protection laws. Competing interests reflected in society are present in the intent and organization of these laws. Historical records suggest that Duluth streams are generally prone to flooding problems; flooding and the conveyance of storm water pollutants continue to be exacerbated by the area's rapid growth, steep slopes, bedrock channels, small drainage basins, and thin soil.
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    Watershed Planning
    (Water Resources Research Center, University of Minnesota, 1972-04) Water Resources Research Center
    The objective of the Seminar on Watershed Planning was to gather area leaders representing watershed districts, municipal, county and State government, and private groups in an effort to stimulate further coordinated water resources planning in Minnesota. The following topics were discussed: Metropolitan Council, Watershed District, and Municipal water resources planning relationships; importance of open space to watershed district planning; some comments concerning watershed planning in Minnesota; Department of Natural Resources relationship to watershed districts; and regional planning and watershed resources. In particular, the Seminar was concerned with the Metropolitan Development Guide and the overall plans of watershed districts.