The amount of water it takes to cover one acre of land to the depth of one foot, approximately 325,851 gallons
Protecting & enhancing Arizona’s water supplies for current and future generations.
ADWR Dictionary
ADWR Dictionary
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Acre-foot (AF)
Active management area (AMA)
A geographic area that has been designated pursuant to A.R.S.§ 45-411 as requiring active management of groundwater or, in the case of the Santa Cruz AMA, active management of any water, other than stored water, withdrawn from a well. Subsequent active management areas may be designated through local initiative or by the Director of ADWR
Adjudication
see "General Adjudication"
Agricultural water use
Water applied to two or more acres of land to produce plants or parts of plants for sale for human consumption or for use as feed for livestock, range livestock or poultry.
Alluvium
A deposit of earth, sand, and other transported matter left by water flowing over land not permanently submerged; chiefly applied to the deposits formed in river valleys and deltas.
Alternative water supply
A water source, other than groundwater, pumped within an AMA.
Annual groundwater allotment
In an AMA, the total amount of groundwater a Grandfathered Right (GFR) holder is authorized to withdraw annually
Aquifer
A geologic formation that contains sufficient saturated materials to be capable of storing water and transmitting water in useable quantities to a well
Aquifer recharge
Water added to the aquifer through seepage and infiltration
Aquifer storage
Water stored underground for future use. Also, water stored pursuant to a permit issued under A.R.S. § 45-831.01, the Underground Water Storage, Savings and Replenishment Program
Artificial recharge
Water recharged to the aquifer through recharge projects, which may be recovered in the future based on accrued recharge credits.
Assured Water Supply
A water supply that meets all of the following criteria as defined in Rules: 1. Physical, legal and continuous availability for 100 years; 2. Meets water quality standards; 3. Demonstrated financial capability to construct the delivery system and related features 4. Consistency with the AMA’s management plan; and 5. Consistency with the AMA’s management goal