Okla. Admin. Code § 785:32-1-2
The following words and terms, when used in this Chapter, shall have the following meaning, unless the context clearly indicates otherwise:
"Application" means a formal request to the Board and the first step required by law to acquire the right to perform or engage in activities regulated by the Board.
"Aquifer Storage and Recovery Activities (ASR)" means activities that exclusively include activities for the storage of water in and recovery of water from an aquifer pursuant to a site-specific aquifer storage and recovery plan authorized by 82 O.S. § 1020.2A. Activities not conducted pursuant to a site-specific aquifer storage and recovery plan shall not be considered ASR activities. For purposes of this chapter, ASR activities also shall not include activities authorized pursuant to 82 O.S. 1020.2(G), storm water runoff management practices, groundwater recharge or augmentation through a natural connection with a farm pond or other impoundment otherwise authorized by law.
"Area of Hydrologic Effect" means the areal extent of all hydrologic features, including surface and groundwater, potentially influenced by ASR operations as determined by the site-specific aquifer and storage recovery plan.
"Beneficial use" means the use of such quantity of stream or groundwater when reasonable intelligence and reasonable diligence are exercised in its application for a lawful purpose and as is economically necessary for that purpose. Beneficial uses include but are not limited to municipal, industrial, agricultural, irrigation, recreation, fish and wildlife, etc.
"Board" means the Oklahoma Water Resources Board authorized by law to make final adjudications, execute contracts, adopt rules and carry out other powers and duties set forth by law or, duties authorized by law to be delegated to the Executive Director, or any employee or agent or staff member thereof as assigned by the Executive Director.
"Dedicated land" means the tract or tracts of land which the applicant owns, leases, or from which the applicant holds a valid right to withdraw groundwater and which is listed in the application and used to calculate the amount of groundwater requested.
"Domestic use" means the use of water by a natural individual or by a family or household for household purposes, for farm and domestic animals up to the normal grazing capacity of the land whether or not the animals are actually owned by such natural individual or family, and for the irrigation of land not exceeding a total of three (3) acres in area for the growing of gardens, orchards, and lawns [82:1020.1(2)]. Domestic use also includes:
(1) the use of water for agriculture purposes by natural individuals,
(2) use of water for fire protection, and
(3) the use of water by non-household entities for drinking water purposes, restroom use, and the watering of lawns, provided that the amount of groundwater used for any such purposes does not exceed five acre-feet per year.
"Freshwater" means water which has less than five thousand (5,000) parts per million total dissolved solids. All other water is salt water. [82:1020.1(7)]
"Groundwater" means fresh water under the surface of the earth regardless of the geologic structure in which it is standing or moving outside the cut bank of any definite stream. [82:1020.1(C)]
"Groundwater basin" means a distinct underground body of water overlain by contiguous land having substantially the same geological and hydrological characteristics and yield capabilities. [82:1020.1(3)] The area boundaries of a major or minor basin can be determined by political boundaries, geological, hydrological, or other reasonable physical boundaries.
"Groundwater subbasin" means a subdivision of a major or minor groundwater basin overlain by contiguous land and having substantially the same geological and hydrological characteristics and yield capabilities. [82:1020.1(4)] Examples are a lateral or vertical subdivision of a groundwater basin delineated by either physical or political boundaries. Physical boundaries would be different in geological, hydrological or yield capabilities; bedrock; faults; low permeability zones or limits of pressure areas, etc. Political boundaries would be irrigation districts, planning districts, counties, city limits, etc.
"Maximum annual yield" means a determination by the Board of the total amount of fresh groundwater that can be produced from each basin or subbasin allowing a minimum twenty (20) year life of such basin or subbasin.
"Natural recharge" means all flow of water into a groundwater basin or subbasin by natural processes including percolation from irrigation.
"Party"or "interested party" means a person or agency named and participating, or properly seeking and entitled by law to participate, in hearings other than hearings on Board rules, regulations and standards.
"Person" means any individual, firm, partnership, association, corporation, business or public trust, federal agency, state agency, the State or any political subdivision thereof, municipalities, and any other duly constituted legal entity.
"Recharge Well" means any well by which stored water is transmitted from the surface to the subsurface.
"Sensitive sole source groundwater basin or subbasin" means a major groundwater basin or subbasin all or a portion of which has been designated as a 'Sole Source Aquifer" by the United States Environmental Protection Agency, and includes any portion of an contiguous aquifer located within five (5) miles of the known areal extent of the surface outcrop of the sensitive sole source groundwater basin [82:1020.9A].
"Stored water" means water stored in an aquifer pursuant to a site-specific aquifer storage and recovery plan.
"Subsurface watershed" means the geographic area in the subsurface that contributes flowing groundwater to a specific point. The area and boundaries of the subsurface watershed can deviate from the surface watershed. The subsurface watershed is delineated using a water-table elevation map or potentiometric surface map.
"Water right" means a right to the use of stream or groundwater for beneficial purposes.
"Well" means any type of excavation for the purpose of obtaining groundwater or to monitor or observe conditions under the surface of the earth but does not include oil and gas wells.
Okla. Admin. Code § 785:32-1-2