Now showing items 1-20 of 139

    • Seiches and Set-up on Lake Winnipeg 

      Einarsson, E.; Lowe, B. (Limnology and Oceanography, 1968)
      Recorder charts of water level for the ice-free season are examined for six stations on Lake Winnipeg for the years 1961-1964. Transverse and longitudinal seiches are identified for the north and south basins. An ...
    • Wildlife and Wildlife Habitat in the Winnipeg Region 

      Bossenmaier, E.F; Vogel, C.G (Resources Planning, Manitoba Department of Mines, Resources and Environmental Management, 1974-05)
      This report is meant for anyone who may have an interest in the wildlife and wildlife habitat of the Winnipeg region. This interest may spring from concern for environmental quality, from a desire to conserve, preserve or ...
    • Appendix A - Water Quality Report 

      International Garrison Diversion Study Board (International Joint Commission, 1976)
      The purpose of this part of the report is to describe the present water quality of Lakes Manitoba and Winnipeg and, to predict future water quality with and without the imposition of irrigation return flows, canal system ...
    • The problem of measuring the mass exchange at The Narrows, Lake Winnipeg. 

      Lau, Y.L.; Hamblin, P.F.; Dick, T.M. (Hydraulics Research Division, 1976-03)
      Preliminary analysis of the studies proposed for Lake Winnipeg indicates that exchange of water masses between the upper and lower basins may be significant for the assessment of water quality trends. Reliable estimates ...
    • Resolving the chronology of recent lake sediments: an example from Devils Lake, North Dakota 

      Jacobsen, Heather A.; Engstrom, Daniel R. (Kluwer Academic Publishers, 1989)
      Devils Lake was a closed, saline lake in North Dakota; it is typical of lake basins in the Great Plains Regions, where windy conditions and fluctuating water-levels disturb sediment and confound chronostratigraphy. Pollen ...
    • Shear at the surface of a lake in light winds 

      Kenney, Bernard C. (American Geophysical Union, 1991-04-15)
      Standard computer cards released at 1-min intervals from the same point beneath a hydrometeorological tower were observed to segregate by color according to their depth of integration of the current. Green cards floated ...
    • Red River of the North Basin, Minnesota, North Dakota, and South Dakota 

      Stoner, Jeffrey D.; Lorenz, David L.; Wiche, Gregg J.; Goldstein, Robert M. (American Water Resources Association, 1993-08)
      The environmental setting of the Red River of the North basin within the United States is diverse in ways that could significantly control the areal distribution and flow of water and, therefore, the distribution and ...
    • Analysis of the effects of the Pine Falls pulp mill on the benthic invertebrates in the Winnipeg River, Manitoba 

      Wong, P.L.; Armstrong, L.; Bezte, C.L.; Wilkinson, P.; Lockhart, W.L. (Department of Fisheries and Oceans, 1996-07-01)
      In Oct. 1994 a comprehensive study was initiated to assess the effects of the Pine Falls Pulp and Paper Mill on the invertebrates in the Winnipeg River. A total of 20850 invertebrate specimens was collected belonging to ...
    • Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores 

      Lockhart, W.L.; Wilkinson, P.; Billeck, B.N; Danell, R.A.; Hunt, R.V.; Brunskill, G.J.; Delaronde, J.; St.Louis, V. (Kluwer Academic Publishers, 1998)
      Sediment cores were collected from lakes in central and northern Canada and from Hudson Bay to compare current and historic net depositions of mercury. Cores from most locations were enriched in mercury in the upper layers ...
    • America's animal factories: how states fail to prevent pollution from livestock waste 

      Natural Resources Defense Council and Clean Water Act (Natural Resources Defense Council, 1998)
      Factory farms, which mass-produce animals in assembly-line fashion, have harmed aquatic life, human health and ecosystems across the nation. As industrial-sized farms stagger under the vast burden of manure they are ...
    • Global-scale environmental effects of hydrological alterations: Introduction 

      Rosenberg, David M.; Mccully, Patrick; Pringle, Catherine M. (American Institute of Biological Sciences, 2000)
      Ubiquitous hydrological alterations-dam construction and associated water diversion, exploitation of groundwater aquifers, stream channelization, and intercatchment water transfer-are producing global-scale effects on the ...
    • The Hudson Bay drainage system: conflicts and cooperation in transboundary water quantity and quality 

      Paton, William H.N. (2001)
      Canada's rivers discharge about 9 percent of the world's renewable water supply. Some 60 percent of this runoff flows into the Arctic Ocean and Hudson Bay. The bulk of the Hudson's Bay water arises in the Rocky Mountains ...
    • Prescription and non-prescription drugs in the Canadian aquatic environment 

      Metcalfe, Chris; Koenig, Brenda; Miao, Xiu-Sheng; Ternes, Thomas; Struger, John (2002)
      In Europe, a variety of prescription and non-prescription drugs have been identified in the effluents of sewage treatment plants (STPs) and in rivers and streams near discharges from STPs. Chronic exposure of aquatic ...
    • Habitat coupling in lake ecosystems 

      Schindler, Daniel E.; Scheuerell, Mark D. (OIKOS, 2002-03-12)
      Lakes are complex ecosystems composed of distinct habitats coupled by biological, physical and chemical processes. While the ecological and evolutionary characteristics of aquatic organisms reflect habitat coupling in ...
    • An Annotated Bibliography on Lake Manitoba and Adjoining Waters 

      Bortoluzzi, Tara (Delta Marsh Field Station (University of Manitoba), 2003-11)
      Lake Manitoba located in south-central Manitoba, is the thirteenth largest freshwater lake in North America, spanning approximately 4700 km2. The lake is an important resource for Manitoba in terms of fisheries, recreation, ...
    • Quality of streams in the Red River of the North Basin, Minnesota, North Dakota, and South Dakota 

      Tornes, Lan H. (U.S. Geological Survey, 2004)
      This report summarizes water-quality data from streams draining the Red River of the North Basin, which is a mostly agricultural region. It primarily has crops including small grains, corn, soybeans, sugar beets, sunflowers, ...
    • Changes in the Emergent Plant Community of Netley-Libau Marsh Between 1979 and 2001 

      Grosshans, Richard E.; Wrubleski, Dale A.; Goldsborough, L. Gordon (Delta Marsh, University of Manitoba, 2004-11)
      We used aerial photography combined with field observations to develop a detailed aquatic vegetation map for Netley-Libau Marsh in south-central Manitoba. This report describes the creation of a new geographically accurate ...
    • Survey of Specific Fish Pathogens in Free-Ranging Fish from Devils Lake, North Dakota 

      Hudson, Crystal; Peters, Kenneth (US Fish & Wildlife Publications, 2005)
      Several biological surveys have been performed at Devils Lake, North Dakota to provide timely information to resource managers to assess the potential for biota transfer from the operation of an outlet designed to carry ...
    • Lower Red River and Lake Winnipeg South Basin Pathogen - Parasite Survey Report, Fall 2006 

      Souter, Brian; Dwilow, Andy; Aldous, Sandra; Allen, Jason; Rowes, Ken; Franzin, Bill; Watkinson, Doug (Freshwater Institute, Department of Fisheries and Oceans, Winnipeg, MB, 2006)
      Summary • 10 species of fish were targeted for collection, 60 fish per species were to be collected. • 9 ofthe 10 targeted species were successfully sampled. Only 7 channel catfish were captured. Total of 547 fish were ...
    • 2006 Yellow Perch Red River Delta Data (Appendix 12) 

      Department of Fisheries and Oceans (2006)