Download conservation data

San Pedro River Wet-Dry Maps (February 2010)

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.

• 2009 Wet-Dry Maps (updated 2/24/2010)
• 2008 Wet-Dry Maps (updated 8/26/2008)
• 2007 Wet-Dry Maps (updated 4/14/2008)

Arizona Natural Infrastructure Composite (May 2008)

GIS data set that integrates 10 local, state, and regional datasets which identify open space lands and sensitive biological lands. This data set is a composite or simplification of the source data sets – the boundaries of all individual data layers have been dissolved into one composite data layer. Note: We did not integrate wildlife linkages data from 2 of the studies in this composite layer because we are awaiting to obtain permission from the source agencies.

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Ecoregional Assessment Geodatabase for Western North America (January 2008)

GIS data set that aggregates the information from 19 ecoregional assessments across western North America packaged as a personal geodatabase for use with ArcGIS 9.x and Microsoft Access software products. Note: this data set replaces the six-ecoregion geodatabase formerly posted on this site.

Download file (24 MB)

Arizona Statewide Freshwater Assessment GIS Data Package (June 2006)

Includes 3 spatial datasets mapped to 1:100,000 scale hydrography for Arizona, including 1) the habitat for 33 native fish species, 2) former and current perennial surface flow for Arizona’s rivers, and 3) the distribution of threatened and endangered species that require aquatic or riparian habitats.

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Biotic Communities of the Southwest GIS Layer (January 2006)

TNC developed a digital version for the whole of David E. Brown and Charles H. Lowe's 1981 map. Previously, GIS representations of this map were only available for its Arizona and New Mexico portions. Users: please note the relatively coarse source scale of the paper map (1:1,000,000) when using this digital version for analyses. A layer file (.lyr) which mimics the familiar color scheme of the paper map is also provided.

Download file (7.5 MB)

Grasslands Assessment GIS Data (December 2004)

A GIS data set depicting the results of a two-year study to delineate grasslands and evaluate their ecological condition in Arizona, southwestern New Mexico, and northern Mexico. This study was completed with the assistance of resource professionals from U.S. and Mexico universities and public agencies.

Download file (1 MB)