Green Valley Water SupplyGreen 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

How do we know?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 FreemanGroundwater Awareness League, Inc.

AttendeesAttendees

Eric Holler: Bureau of Reclamation Kenneth Seasholes: ADWRAnn Phillips: Tucson Audubon Society Buck Schmidt: Brown and CaldwellCynthia Chardley: Phelps Dodge attorney Tom Berry: Pima Cty Wastewater Mgmt.John D. Brack: Phelps Dodge (Sierrita manager) Susan Eden: U of A Water ResourceMarie Light: Tucson Water (recharge) Kathleen Chavez: Pima CountyMark Cross: Errol Montgomery Consultants Evan Canfield: Pima County Flood ControlMarc Herman: Pima County DEQ Terry Sprouse: U of A Water ResourceNorris West: Community Water (Green Valley) Amy McCoy: Sonoran InstituteMichael Lytle: Rancho Sahuarita Water Co. Brad Poole: Tucson CitizenJohn Gay: Las Quintas Sahuarita Water Co. Scott Altherr: Castro EngineeringSteve Gay: Las Quintas Sahuarita Water Co. Deborah Tosline: Bureau of ReclamationMartin Roush: Town of Sahuarita Eve Halper: Bureau of ReclamationToops Culbertson: Farmers Water Co. Frank Postillion: Pima County Flood ControlJim Lamb: Green Valley News

The Official Solution = CAPThe Official Solution = CAP

Cost for infrastructure = $30 - $100 million

GV allocations = 5,400 af allocations

Deficit = 40,000 af

Additional augmentation = 34,600 af

Possible solutionsPossible 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

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.

Results

Check Dam in New Mexico

Chandler Park is recharge Basin

Soccer Field is recharge basin

Dry wells on soccer field

Haven Golf Course Project

Outlet of Watershed E and possible site of retention basin.

Pooling area at mouth of Watershed D

Mouth of Watershed A with significant flooding

Projected Groundwater Demands for Golf Courses

Golf Course 1996 2000 2005 2010 2020

Country Club of Green Valley 795 694 694 694 694

Desert Hills Golf Course 527 428 428 428 428

Haven Golf Course 731 682 682 682 682

Morry Canoa Hills Golf Course 498 428 428 428 428

Quail Creek Golf Course #1 295 428 428 428 428

Quail Creek Golf Course #2 na 214 428 428 428

San Ignacio Golf Course 408 428 428 428 428

Torres Blancas Golf Course 874 371 371 371 371

Canoa Ranch Golf Course #1 na 214 428 428 428

Rancho Sahuarita Golf Course #1 na 428 428 428 428

Total 4,128 4,315 4,743 5,599* 5,599*

Individual Projects

• Xeriscaping

• Drip system seasonal changes

• Rain Water harvesting

Brad Lancaster