U.S. Fish & Wildlife Service
 

LOWER GREAT LAKES
Fishery Resources Office

Conserving the Nature of America  
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Geogrpahic Information Systems (GIS) Page
  • What is GIS?
    A geographic information system (GIS) is a computer-based tool for mapping and analyzing things that exist and events that happen on earth. GIS is more than “computer maps”— it gives you the power to link databases to maps to create dynamic displays. GIS can be used to provide managers with the capability to visualize, query, and analyze multiple data sources to make sound management decisions.
  • Goals of the LGLFRO GIS program?
    • To make GIS technology available to biologists and managers to use as a tool that can be useful in achieving management goals.
    • Promote the integration of GIS with other systems and programs to make Service information more readily accessible to partners and the public.
    • Coordinate the creation and implementation of spatial data layers and tools to support aquatic resource and habitat restoration and rehabilitation.
  • What does the LGLFRO GIS program do?
  • Map Where Things Are
    …to find the desired features, determine patterns, and take action

Barriers Image
Over 75,000 dams create barriers to fish passage on our waterways

  • Map Quantities
    …to find features that meet your criteria and determine relationships between features

    Number of Fish Species introduced by State
    There are over 67 fish species that have been introduced to New York State

  • Map Densities
    …to measure the number of features using a uniform unit of area

    Predicted abundance of Bluegill in western Lake Erie
    Predicted abundance of BlueGill in western Lake Erie

  • Find What's Nearby
    …to find what's occurring within a set distance of a feature

    Buffers around island
    How many fish species sites are within 100m, 250m, 500m?

  • Find What's Inside
    …to find what's inside a specific area of interest

    western Lake Erie substrate and fish sites
    What fish species are found within sand/gravel substrate?

  • Map Change
    …to help decide what action to take, determine past conditions, and predict future conditions

    Loss of Wetlands
    Wetland loss near stream and pond.

Last Updated: August 4, 2008

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