Potential Natural Vegetation, Original Kuchler Types to MC1 vegetation classes, for the Region 6 (Oregon/Washington, USA) ILAP project area

This coverage was digitized at the USA EPA from the 1979 Physiographic Regions Map produced by the Bureau of Land Management, which added 10 physiognomic types to Kuchler's 1966 USGS Potential Natural Vegetation map (and similarly differs from the 1985 US Geological Survey map revised by Kuchler and others) The dataset consists of two thematic layers a) Vegetation Form and b) Vegetation Type.  Dataset is a polygon coverage with 6700 meter mean consecutive point spacing.

Data for Oregon and Washington (USA) were extracted using USGS HUC5 watersheds. Vegetation codes/names were then reclassified (cross-walk) to fit the vegetation codes/types used by the model MC1 using the WWETAC biogeography option.