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For information about hydrologic research, Cienega Creek projects, CAP isotope studies,shallow groundwater studies and the Central Arizona Groundwater Replenishment District,
please click here.


Watershed Planning

PAG’s Watershed Planning program focuses on ways to preserve or improve the water resources in Pima County's watersheds. As the Designated Planning Agency under Section 208 of the federal Clean Water Act, PAG plans for areawide wastewater treatment within Pima County.
In addition, the program provides planning and technical assistance to PAG-member jurisdictions, runs an annual public outreach stormwater pollution prevention campaign, and conducts research on one of the region’s only low-elevation perennial streams, Cienega Creek.

Through PAG’s Watershed Planning Subcommittee and Stormwater Management Working Group, members have an opportunity to gain a better understanding of complicated state regulations that govern the use and the quality of our water resources. They also can develop coordinated input on new regulatory programs and keep informed about watershed policies and issues.

Community interest in preserving and restoring riparian habitats remains strong. While the regulatory structure is in place to ensure that drinking water needs are met, the trade-off has been that groundwater depletion has seriously degraded the quality of the natural stream environment.  The future looks more promising as water conservation and water harvesting systems are increasingly being employed and stormwater is increasingly viewed as a viable water resource.

For more information about the Watershed Planning Program, please call (520) 792-1093.

Public Outreach


Click on the icons above to find out how to Shrink Your Water Footprint.




  • May 8 - 2013 Seminar on Stormwater Regulations for the Construction Industry. Please click here for details and to register.

Shallow Groundwater Areas Report

PAG released the updated and expanded report, Shallow Groundwater Areas in Eastern Pima County, Water Well Inventory and Pumping Trend Analysis, in 2012. 

For more information, click here.

CAGRD District Membership Map

In September 2011, PAG released the following report and map of membership in the Central Arizona Groundwater Replenishment District (Tucson Active Management Area, 1995-2009)

For more information, click here.

Regional Water Assessment

In late 2010, the Regional Water Assessment Task Force conducted four ThinkTank sessions using computer-based technology to capture input on regional water issues, priorities, use and resource management and infrastructure funding. To read more about the process and download a copy of the report, please click here.

Watershed Planning Map

Map of PAG Water Quality monitoring sites on Cieniga Creek.

Watershed Planning Map (1,495KB KMZ)
(view with Google Earth)


©Pima Association of Governments | 1 E Broadway Blvd, Suite 401, Tucson, AZ 85701 | Telephone (520) 792-1093, FAX (520) 620-6981