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State
CEC Cropland Index Model (Classified)
State of California —
For lands used to produce crops, CEC developed a suitability model to simultaneously evaluate several factors that impact an area’s relative implication for... -
State
Historic Vegetation
State of Oregon —
This is a map of historical ("presettlement") vegetation for the state of Oregon, created with Arcview 3.2 by merging digital data from different sources: H. J.... -
Federal
USGS and EPA Background Study Dataset
U.S. Environmental Protection Agency —
This excel spreadsheets provide the USGS and EPA background dataset (climatic variables, pathogen detection results, geochemical analysis results, topological...