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<br />1998 report to the RIo Grande Compact CommisSIon
<br />
<br />Bureau of Reclamation
<br />
<br />American Canal during 1998 in accordance with the International Treaty with Mexico.
<br />In addition, the IBWC operated the International Diversion Dam which diverts irrigation
<br />waters into the Acequia Madre head gates operated by Mexico. To accomplish the
<br />water allotment accounting, the Districts collected field flow measurements and
<br />coordinated data from all water user entities. Utilizing the summarized flow data
<br />submitted by the Districts for their areas of responsibility, Reclamation calculated and
<br />summarized the monthly and end-of-year project water supply use and accounting for
<br />1998.
<br />
<br />Drainage waters from Rio Grande Project lands provide a supplemental irrigation water
<br />supply for approximately 18,342 acres of the Hudspeth County Conservation and
<br />Reclamation District NO.1 (HCCRD). Total flows out of the project to HCCRD, through
<br />the Hudspeth Feeder Canal, Tornillo Canal at Alamo Alto, and Tornillo Drain were
<br />134,467 af during 1998. Under the Warren Act contracts, HCCRD was charged for
<br />drainage water from the project between March 1 and September 30 which amounted
<br />to 96,424 af.
<br />
<br />Water flows measured by IBWC at the Rio Grande at Fort Quitmari Station, below the
<br />Project, and HCCRD boundaries, amounted to 174,470 af during 1998.
<br />
<br />Rio Grande Project Adjudications
<br />
<br />The three legal/administrative processes, cited in the 1997 version of this report,
<br />regarding water rights associated with the Rio Grande Project are still ongoing.
<br />Progress is being made through mediation efforts on the quiet title action in federal
<br />district court.
<br />
<br />Elephant Butte Reservoir and Powerplant
<br />
<br />Elephant Butte Reservoir reached a maximum storage of 1,985,900 af (4;404.81 ft) on
<br />February 17, 1998. A minimum storage of 1,581,100 af (4,392.46 ft) was reached on
<br />October 16, 1998. Storage levels in Elephant Butte Reservoir did not enter into the
<br />50,000 af flood control space in 1998.
<br />
<br />Net power generation for 1998 was 115,899,900 kilowatt-hours which was 154-percent
<br />of the 59-year average (1940 through 1998) of 75,117,208 kilowatt-hours.
<br />
<br />Caballo Dam and Reservoir
<br />
<br />Caballo Reservoir reached a maximum storage of 74,810 af (4,150.61 ft) on July 28,
<br />1998. A minimum storage of 32,940 af (4,139.70 ft) was reached on October 12, 1998.
<br />
<br />According to Court Order No. CIV-90-95 HBI\NWD of October 17, 1996, which resulted
<br />from a negotiated settlement with the Districts, the Caballo Reservoir storage level is
<br />targeted not to exceed 50,000 af (4,144.95 ft) from October 1 to January 31 of each
<br />year, unless flood control operations, storage of water for conservation purposes, re-
<br />regulation of releases from Elephant Butte Dam, safety of dams purposes, emergency
<br />.
<br />
<br />-18-
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