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  • Culvert assessment

    Creator:
    Lower Nehalem Watershed Council
    Abstract:
    The Lower Nehalem Watershed Council utilized information from several sources to identify culverts in the watershed that are most likely to block migration of Coho. Our approach builds upon the GIS data layers provided by Portland State as part of their assessment of the watershed. Additional data layers were obtained...
    Resource Type:
    Other
    Full Text:
    fish passage problem. As of April 15, 2001 we have looked at 175 of these low gradient crossings and