Southwest Watershed Research Center

The USDA Southwest Watershed Research Center is more than 30 years old and several research departments occupy multiple small buildings. A study was conducted to evaluate modernizing the facility by consolidating several of the work spaces under one roof.  The result is a new 15,000-square-foot, single-story, slab-on-grade laboratory building. Buildings 102, 111, 302, 303 and 312 will be demolished to make way for the structure.

Also proposed is a one- or two-story, 22,000-square-foot storage facility to be located at an undeveloped 7.1-acre site in Tombstone. Planned surface parking will increase the future development footprint to about 60,000 square feet.

Under an IDIQ contract held by AECOM, we conducted subsurface explorations to identify the stratigraphy underlying each site and evaluated the geotechnical properties of the materials encountered.  Special consideration was given to the proximity of the borings to the bee laboratory in Tucson and challenging terrain was faced in Tombstone.  We also provided recommendations for support of the proposed buildings via spread footings, floor slab support, earthwork and pavement.