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Inventory of Pacific Northwest Lakes/Reservoirs and an Analysis of Historical Nutrient and Water Quality Data

A GIS Inventory of Pacific Northwest Lakes/Reservoirs and an Analysis of Historical Nutrient and Water Quality Data (US EPA Region 10 EPA 910-R-04-009, November 2004)(pdf file, 1756 Kb, 36 pages)

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URL: http://yosemite.epa.gov/r10/water.NSF/Water+Quality+Standards/NW+Lakes+nutrients