CEAP Watershed Assessment Study: ARS and NRCS are leading the Conservation Effects Assessment Project (CEAP) to quantify the effectiveness of USDA conservation programs. The ARS Watershed Assessment Study (WAS) has lead to development of the STEWARDS data system. STEWARDS employs web-based GIS technologies to present water quality, hydrology, soils, climate and other data from ARS CEAP watersheds.
Experimental Watersheds: Soils, vegetation, land use, hydrology, topography, climate and other data from the Walnut Gulch Experimental Watershed and Santa Rita Experimental Range, both in Arizona.
Water Database: Precipitation and streamflow data from small agricultural watersheds in the United States.
Systematic Botany & Mycology Laboratory: The web site of the ARS Systematic Botany & Mycology Laboratory provides access to several of its own datasets--along with those of other organizations--on topics of plant and microbial taxonomy and collections
Systematic Entomology Laboratory: The ARS Systematic Entomology Laboratory provides links to many datasets on entomological taxonomy and holdings of many entomological collections maintained by ARS, the National Museum of Natural History and other organizations.
Plant Taxonomic Informationof the National Germplasm Information Network (GRIN): Classification and nomenclature for plant germplasm accessions of the ARS National Plant Germplasm System and for many other economic plants worldwide.