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Pacific Northwest (PNW) Hydrologic Landscape (HL) polygons and HL code. |
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Pacific Northwest (PNW) Hydrologic Landscape (HL) polygons and HL code. |
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AUTHORS: Scott G. Leibowitz, Randy L. Comeleo, Parker J. Wigington, Jr., Marc H. Weber, Eric A. Sproles, and Keith A. Sawicz
MAP DATA: USGS National Elevation Dataset; The Climate Source Inc.; USDA STATSGO Soil Permeability Map, Penn State Center for Environmental Informatics |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>This dataset updates the Wigington </SPAN><SPAN><SPAN>et al. </SPAN></SPAN><SPAN>(2013) hydrologic landscape (HL) approach for Oregon to make it more broadly applicable and applies the revised approach to the Pacific Northwest (PNW; i.e., Oregon, Washington, and Idaho). Specific changes incorporated are the use of assessment units based on National Hydrography Dataset Plus V2 catchments, a modified snowmelt model validated over a broader area, an aquifer permeability index that does not require preexisting aquifer permeability maps, and aquifer and soil permeability classes based on uniform criteria. Polygon features in this dataset were created by aggregating (dissolving boundaries between) adjacent, similarly-coded hydrologic assessment units.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>This map is not intended to be used or displayed at any scale larger than 1:1,270,000.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV> |
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PNW Hydrologic Landscape Class |
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["hydrologic landscapes","hydrologic classification","hydrologic cycle","watersheds","rivers/streams","runoff","geospatial analysis","National Hydrography Dataset","NHD","Pacific Northwest"] |
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en-US |
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