Agriculture
- CropScape (Cropland Data Layer) - a crop-specific land-cover layer
- Department of Revenue Final Land Unit (FLU) Classification- a classification of private agricultural land into one of six uses, fallow, hay, grazing, irrigated, continuously cropped and forest. Irrigated land is classified as being flood, pivot, or sprinkler.
- IrrMapper - annual, 30-meter resolution irrigation maps from 1986 - 2018.
- Montana Water Resources Survey - historical water use from 1943 - 1965
- Montana Department of Agriculture
- Montana Facts and Figures from the USDA National Agricultural Statistics Service
- National Crop Progress Reports (current and historical) from the USDA National Agricultural Statistics Service
- USDA Census of Agricultural Publications
