A rock formed by the crystallization of magma or lava.
ADWR Dictionary
ADWR Dictionary
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Igneous rock
Impaired
A lake or stream that is not meeting one or more surface water quality standards as established in A.R.S. § 49-231
In Situ Leaching
The extraction of metallic ores using acid leaching of ores that are not moved from their original natural location.
In Situ Leaching Sites
Those portions of metal mining facilities at which in situ leaching and associated copper recovery operations occur, including surface applications of acid leaching solutions and deep well injection of acid leaching solutions.
In-lieu water
Water that is delivered to a groundwater savings facility in an AMA or INA and that is used at the facility by the recipient on a gallon for gallon substitute basis for groundwater that otherwise would have been pumped from within the AMA or INA.
Incidental recharge
The percolation of water to the water table after the water has been used. Components of incidental recharge include recharge that occurs from septic tanks, turf watering and effluent discharge.
Index well
A well that is measured during specific periods or continuously monitored by automatic recorders. These wells allow a lower density of representative monitoring to occur in the years between “sweeps”.
Individual User
A person receiving groundwater from a municipal provider for non-irrigation uses to which specific conservation requirements apply, including turf-related facilities, large-scale cooling facilities, and publicly-owned rights-of-way.
Industrial demand
Water used by an industrial facility, such as a golf-course, dairy, feedlot, power plant, mine or paper mill, and that is served by the industrial facility’s well and not by a city, town or private water company.
Industrial process purposes
Water that is used by an industrial user directly in the creation or manufacture of a product.
Industrial Use
An industrial use is a non-irrigation use of water not supplied by a city, town or private water company, including animal industry use and expanded animal industry use (A.R.S. § 45-561(5)).
Industrial User
A person who uses water for industrial uses.
Inflow
All water that enters a hydrologic system. Examples include mountain front and stream channel recharge, artificial and incidental recharge and baseflow and underflow into a system.
Influent
Raw, untreated wastewater flowing into a wastewater treatment plant.
InSAR
Synthetic Aperture Radar that is processed using Interferometry.
Instream flow right
A non-diversionary surface water right for recreation and wildlife purposes, including fish.
Interior Water Use
Non-residential or residential indoor uses of water, including toilet flushing, bathing, drinking, and washing.
Intermittent lake
A lake that normally contains water for only a portion of the year or one that is only seasonally dry.
Intermittent stream
A stream or part of a stream that flows only at certain times of the year when it receives water from springs, snowmelt, surface run-off or other sources.
Interstate stream
Any stream constituting or flowing along the exterior boundaries of this state, and any tributary originating in another state or foreign country and flowing into or through this state.
Irrigation Distribution System
A system of canals, flumes, pipes, or other works that are owned or operated by an irrigation district or private water company and used to deliver water for irrigation use.
Irrigation district (ID)
A political subdivision established as a special taxing district for either agricultural improvement or irrigation and conservation purposes.
Irrigation grandfathered right (IGFR)
A right to irrigate land in an active management area that was legally irrigated any time between 1975 and 1979, based on crops historically grown for which a certificate has been obtained. A few exceptions exist for substitution or transfer of acres under specified circumstances. The process for determining acreage and for calculating a groundwater allocation is specified in A.R.S. § 45-465.
Irrigation non-expansion area (INA)
A geographic area that has been designated pursuant to A.R.S. §§ 45-431 or 45-432 as having insufficient groundwater to provide a reasonably safe supply for the irrigation of cultivated lands at the current rate of withdrawal. Within INA's, new agricultural use occurring on land that was not irrigated in the five years preceding the designation of the INA is prohibited with a few exceptions for substitution or transfer of acres under specified circumstances.
Irrigation use
In an AMA, the use of groundwater on two or more acres of land to produce plants or parts of plants for sale or human consumption, or for use as feed for livestock, range livestock or poultry. In the Santa Cruz AMA, this definition is expanded to include all water, other than stored water, withdrawn from a well.
Irrigation Water Duty
Definition as prescribed in A.R.S. § 45-567 which, for the 4MP, is the total irrigation requirement to produce the crops historically grown divided by the assigned irrigation efficiency.