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Published byWilla Moore Modified over 9 years ago
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Duluth Watersheds Miller Chester Tischer Amity
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Aerial Photos
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Impervious Surfaces
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Relationship Between % Imperviousness and Water Quality 8070605040302010 0 ADAPTED FROM SCHUELER, ET. AL., 1992 STREAM DEGRADATION WATERSHED IMPERVIOUSNESS (%) DEGRADED PROTECTED IMPACTED Impervious Surface is a Strong Indicator of Water Quality
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Current Impervious Surfaces by Watershed
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Land Use/Cover
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NEMO Classes Red – Urban areas, roads and railroads Yellow – Farmsteads and rural developments Green – Forested areas Brown – Grasslands, agricultural, bare rock, gravel pits, regeneration forest Blue – Open water, wetlands
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Zoning Boundaries
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City of Duluth Land Use/Cover combined with zoning boundaries
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Removal of Steep Slopes
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Removal of Steep Slopes and Wet areas
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Removal of Steep Slopes, Wet areas, and current Impervious areas
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Build-out Impervious Surfaces
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