1. Green Valley Water Supply Water In = 28,000 af annual Water Out = 68,000 af annual Over Allocated = 40,000 af annual acre foot = usage family of 4 annually

2. How do we know? Possibilities for Aquifer Recharge Projects in Green Valley area Monday, January 23, 2006 10 am to 12 noon Place: Water Resources Research Center University of Arizona 350 N. Campbell Avenue Tucson, Arizona 85719 Contact: Nancy Freeman Groundwater Awareness League, Inc.

3. Attendees Eric Holler: Bureau of ReclamationKenneth Seasholes: ADWR Ann Phillips: Tucson Audubon SocietyBuck Schmidt: Brown and Caldwell Cynthia Chardley: Phelps Dodge attorneyTom Berry: Pima Cty Wastewater Mgmt. John D. Brack: Phelps Dodge (Sierrita manager)Susan Eden: U of A Water Resource Marie Light: Tucson Water (recharge)Kathleen Chavez: Pima County Mark Cross: Errol Montgomery ConsultantsEvan Canfield: Pima County Flood Control Marc Herman: Pima County DEQTerry Sprouse: U of A Water Resource Norris West: Community Water (Green Valley)Amy McCoy: Sonoran Institute Michael Lytle: Rancho Sahuarita Water Co.Brad Poole: Tucson Citizen John Gay: Las Quintas Sahuarita Water Co.Scott Altherr: Castro Engineering Steve Gay: Las Quintas Sahuarita Water Co.Deborah Tosline: Bureau of Reclamation Martin Roush: Town of SahuaritaEve Halper: Bureau of Reclamation Toops Culbertson: Farmers Water Co.Frank Postillion: Pima County Flood Control Jim Lamb: Green Valley News

4. The Official Solution = CAP Cost for infrastructure = $30 - $100 million GV allocations = 5,400 af allocations Deficit = 40,000 af Additional augmentation = 34,600 af

5. Possible solutions Check dams: Upstream washes—El Coronado Ranch In larger river flows Recharge basins—Chandler Golf course recharge basins—U of A study Reservoirs in mountains Individual rain water harvesting projects

6. El Coronado Ranch It is important to start at the top of the watershed and put structures on the hillsides as well as in the streambed. We have built over 20,000 loose rock structures in the Chiricahua Mountains.

7. Results

8. Check Dam in New Mexico

9. Chandler Park is recharge Basin

10. Soccer Field is recharge basin

11. Dry wells on soccer field

12. Haven Golf Course Project Outlet of Watershed E and possible site of retention basin.

13. Pooling area at mouth of Watershed D

14. Mouth of Watershed A with significant flooding

15. Projected Groundwater Demands for Golf Courses Golf Course19962000200520102020 Country Club of Green Valley795694 Desert Hills Golf Course527428 Haven Golf Course731682 Morry Canoa Hills Golf Course498428 Quail Creek Golf Course #1295428 Quail Creek Golf Course #2na214428 San Ignacio Golf Course408428 Torres Blancas Golf Course874371 Canoa Ranch Golf Course #1na214428 Rancho Sahuarita Golf Course #1na428 Total4,1284,3154,7435,599*

16. Individual Projects Xeriscaping Drip system seasonal changes Rain Water harvesting Brad Lancaster