ARIZONA'S WATER SUPPLIES AND WATER DEMANDS

Transcript

1 SECURING ARIZONA’S WATER FUTURE ARIZONA'S WATER SUPPLIES AND WATER DEMANDS r economy and quality of Arizona's desert climate directly affects ou life. All economic of cities occurs only where gated agriculture, and growth activity, including mining, irri dependable water supplies are available. As a result, Arizona places a high priority on managing its limited water to ensure that secure water supplies are available now and well into the future. WHAT WATER SUPPLIES ARE AVAILABLE There are basically four categories of water supplies available in Arizona: Colorado River water, surface water other than Colorado River water, groundwater and effluent. The utility of each type of water depends on it s quantity, quality, reliability and economic feasibility. SURFACE WATER Surface water from lakes, rivers and streams is Arizona's major renewable resource. However, because of our desert climate, the amount of surface water available can vary ason, and place to place. In order to make dramatically from year to year, season to se the best use of the surface water when and where it is needed, storage reservoirs and delivery systems have been constructed throughout the state. Most notable are the major reservoir storage systems located on the Salt, Verde, Gila and Agua Fria rivers. Almost all of the natural surface water in Arizona has been developed. COLORADO RIVER WATER A separate category of surface water in Arizona is the water supplied through the Colorado River. The federal government constructed a system of reservoirs on the River to harness its supplies for use in several states. Arizona, California, Nevada, New Mexico, Utah, Colorado, Wyoming and Mexico share the River's resources. Rights to use Colorado River water are quantified by a string of legal authorities known as the "Law of the River." Based on this body of law, Arizona 8 million acre feet has the right to use 2. county water users rely on ter. Mohave, La Paz and Yuma annually of Colorado River wa Colorado River as their principal water supply. When fully utilized, the Central Arizona Project will deliver on average 1.5 million-acre feet of Colorado River water to Maricopa, Pinal and Pima Counties. GROUNDWATER About 43 percent of the state's water use comes from groundwater sources. Groundwater is found beneath the earth's surface in natural reservoirs called aquifers. In most cases the water stored in these reservoi rs has been in place for millions of years. Throughout this Century, groundwater has been pumped out more rapidly than it is overdraft. Though a large amount of water being replenished, creating a condition called remains stored in Arizona's aquifers, its availability is limited by location, depth and quality. By continuing to overdraft the state's groundwater supplies, we challenge our ability to ensure a secure water supply for the future. In recognition of this threat, Arizona Department of Water Resources Phone: (602) 771-8500 3550 North Central Avenue Long Distance within Arizona: (800) 352-8488 Phoenix, Arizona 85012 Fax: (602) 771-8486

2 SECURING ARIZONA’S WATER FUTURE Arizona implemented the Groundwater Management Code in 1980. The Groundwater Code promotes water conservation and long-ra nge planning of our water resources. RECLAIMED WATER Reclaimed water, or effluent, is the one increasing water source in our state. As our ed wastewater will be available. Reclaimed population and water use grows, more treat water is treated to a quality that can be us ed for purposes such as agriculture, golf courses, parks, industrial cooling, or maintenance of wildlife areas. HOW MUCH WATER ARE WE USING? million acre-feet of Based on data from 2001-2005, Arizona uses approximately 6.96 water annually. One acre-foot equals 325,851 gallons. An acre-foot is enough water to serve the needs of a family of five for one year. HOW IS THE WATER BEING USED The graph below shows the percentage of water used by each major use category. CONTACTS Prescott AMA Tucson AMA Arizona Department of 2200 East Hillsdale Road 400 West Congress, Suite 518 Water Resources Prescott, AZ 86301-4941 Tucson, AZ 8570 3550 North Central Ave. (928) 778-7202 1-1374 (520) 770-3800 Phoenix, AZ 85012 (602) 771-8500 Santa Cruz AMA Pinal AMA Phoenix AMA 857 West Bell Road, Suite 3 1729 N. Trekell Road Suite Nogales, AZ 3550 North Central Ave. 105 85621-4545 Phoenix, AZ 85012 Casa Grande, AZ 85222 (520) 761-1814 (602) 771-8585 (520) 836-4857 Phone: (602) 771-8500 Arizona Department of Water Resources 3550 North Central Avenue Long Distance within Arizona: (800) 352-8488 Phoenix, Arizona 85012 Fax: (602) 771-8486

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