Walnut Gulch Experimental Watershed

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View into the Walnut Gulch Experimental Watershed
Location of the Walnut Gulch Experimental Watershed, Arizona, USA



Located in SE Arizona, USA surrounding the historic city of Tombstone, the 150 km² Walnut Gulch Experimental Watershed was established in the early 1950's to study the role of watershed treatments on downstream water yield. The site was deemed typical of the black grama grass-brush dominated areas of southern New Mexico and Arizona.

Catchment size

150 km²




Vegetation/Land use

Black grama grass-brush dominated areas

Context of investigation

The role of watershed treatments on downstream water yield


Precipitation since 1953
Sediment transport
Soil Moisture

Links to project webpages

other Links


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  • Nearing, M.A., Nichols, M.H., Stone, J.J., Renard, K.G., Simanton, J.R., 2007. Sediment yields from unit-source semiarid watersheds at Walnut Gulch. Water Resour. Res., 43(6), W06426, DOI: 10.1029/2006WR005692.
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