43 CFR 414.2 - Definitions of terms used in this part.
Authorized entity means:
Basic apportionment means the Colorado River water apportioned for use within each Lower Division State when sufficient water is available for release, as determined by the Secretary of the Interior, to satisfy 7.5 million acre-feet (maf) of annual consumptive use in the Lower Division States. The United States Supreme Court, in Arizona v. California, confirmed that the annual basic apportionment for the Lower Division States is 2.8 maf of consumptive use in the State of Arizona, 4.4 maf of consumptive use in the State of California, and 0.3 maf of consumptive use in the State of Nevada.
BCPA means the Boulder Canyon Project Act, authorized by the Act of Congress of December 21, 1928 ( 45 Stat. 1057).
Colorado River Basin means all of the drainage area of the Colorado River System and all other territory within the United States to which the waters of the Colorado River System shall be beneficially applied.
Colorado River System means that portion of the Colorado River and its tributaries within the United States.
Colorado River water means water in or withdrawn from the mainstream.
Consuming State means a Lower Division State where ICUA will be used.
Consumptive use means diversions from the Colorado River less any return flow to the river that is available for consumptive use in the United States or in satisfaction of the Mexican treaty obligation.
(2) The Mexican treaty obligation is set forth in the February 3, 1944, Water Treaty between Mexico and the United States, including supplements and associated Minutes of the International Boundary and Water Commission.
Decree means the decree entered March 9, 1964, by the Supreme Court in Arizona v. California, 373 U.S. 546 (1963), as supplemented or amended.
Entitlement means an authorization to beneficially use Colorado River water pursuant to:
(1) The Decree;
(3) A reservation of water from the Secretary.
Intentionally created unused apportionment or ICUA means unused apportionment that is developed:
(1) Consistent with the laws of the Storing State;
(2) Solely as a result of, and would not exist except for, implementing a Storage and Interstate Release Agreement.
Lower Division States means the States of Arizona, California, and Nevada.
Mainstream means the main channel of the Colorado River downstream from Lee Ferry within the United States, including the reservoirs behind dams on the main channel, and Senator Wash Reservoir off the main channel.
Offstream storage means storage in a surface reservoir off of the mainstream or in a ground water aquifer. Offstream storage includes indirect recharge when Colorado River water is exchanged for ground water that otherwise would have been pumped and consumed.
Secretary means the Secretary of the Interior or an authorized representative.
Storage and Interstate Release Agreement means an agreement, consistent with this part, between the Secretary and authorized entities in two or more Lower Division States that addresses the details of:
Surplus apportionment means the Colorado River water apportioned for use within each Lower Division State when sufficient water is available for release, as determined by the Secretary, to satisfy in excess of 7.5 maf of annual consumptive use in the Lower Division States.
Unused apportionment means Colorado River water within a Lower Division State's basic or surplus apportionment, or both, which is not otherwise put to beneficial consumptive use during that year within that State.
Upper Division States means the States of Colorado, New Mexico, Utah, and Wyoming.