U.S.
Data Gateway:
Geospatial Data Gateway – Natural Resources Conservation Service (NRCS)*
Location/Orientation:
Digital Raster Graph (DRG) – U.S. Geological Survey (USGS)
Digital Orthophoto Quadrangle (DOQ) – U.S. Geological Survey (USGS)*
Climate:
Climate Generator (CLIGEN) – Agricultural Research Service (ARS)
Parameter-elevation Regressions on Independent Slopes Model (PRISM) – Oregon State University*
Topography:
Earth Explorer – U.S. Geological Survey (USGS)
Geographical Coordinates and Elevation – Precision Farming with Global Positioning System (GPS)*
Soils:
Soil Survey– Natural Resources Conservation Service (NRCS)*
Land Cover Institute – U.S. Geological Survey (USGS)*
Cropland Data Layer – National Agricultural Statistics Service (NASS)*
* Integration of data source in progress.
International Climate Data
International precipitation and temperature data (Cligen) – ARS Hydrology Lab
