To develop knowledge and technology for sound management of water, plants and soil in semiarid regions
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The SWRC operates the Walnut Gulch Experimental Watershed in southeastern Arizona as an outdoor laboratory for studying semiarid rangeland hydrologic, ecosystem, climate, and erosion processes. Access our data using our DAP web application.
The Walnut Gulch Experimental Watershed is part of the Long-term Agroecosystem Research Network
The Southwest Watershed Research Center is located in Tucson, AZ and is part of the Pacific West Area.
The Research Leader is Philip Heilman.
Phone: (520) 647-9202
USDA, ARS, SW WATERSHED RES
2000 EAST ALLEN ROAD
Tucson, AZ 85719