Download conservation data

San Pedro River Watershed Maps (October 2008)

Series of 4 map exhibits illustrating conservation-related data on the status of this internationally-recognized desert river and riparian corridor. Maps include both the U.S. and Mexico portions of the San Pedro watershed depicting the following themes: Conservation Investments; Riparian Ecological Condition; Current and Formerly Perennial Stream Reaches; and a Water Budget.

Download file (21 MB)

San Pedro River Wet-Dry Maps (August 2008)

The San Pedro River wet/dry mapping dataset is a community effort to track the river’s health by monitoring the persistence of surface water during the driest time of each year. It is created by recording the end points of every wet section of the San Pedro River during June each year. Maps depict the wet portion of the San Pedro River.

• 2008 Wet-Dry Maps (updated 8/26/2008)
• 2007 Wet-Dry Maps (updated 4/14/2008)

Interbasin Groundwater Flow at the Benson Narrows, Arizona (March 2005)

Describes research indicating groundwater is moving through the floodplain alluvial aquifer at Three Links Farm, and that most of this water originates from the Upper San Pedro River Basin. Published in March/April 2005 issue of Southwest Hydrology.

Download file (< 1 MB)

The Lower San Pedro River—Hydrology and Flow Restoration for Biodiversity Conservation (May 2004)

Describes The Nature Conservancy's flow management approach to increasing water supply for riparian vegetation, based largely on results from hydrologic analyses indicating that retiring agricultural pumping at key locations increases water availability for riparian vegetation. Paper presented at USFS conference, May 11-15, 2004.

Download file (< 1 MB)