Tag Archives: jim yannotta

LA to Continue Irrigation through August

LADWP TO PROVIDE IRRIGATION WATER IN OWENS VALLEY THROUGH AUGUST

Statement provided by the LA DWP:

Bishop, CA – Unexpected summer rainfall has provided sufficient water in the Los Angeles Aqueduct system for the Los Angeles Department of Water and Power (LADWP) to continue irrigation in Owens Valley through the end of August. Continued irrigation, in the absence of any savings elsewhere, is only possible because Los Angeles’ extreme reduction in water exports from the Eastern Sierra.

“This weather could not have come at a better time,” Manager of the Los Angeles Aqueduct James Yannotta said. “These rains are providing much-needed water that will help LADWP to continue irrigation through August.”
Earlier in this extremely dry year LADWP recognized that there might be insufficient water supplies from the Los Angeles Aqueduct to meet all water demands in the Owens Valley and in the City of Los Angeles. The Long Term Water Agreement between the City of Los Angeles and Inyo County protects two end-goals: Providing a reliable source of water for Los Angeles and protecting the Owens Valley environment. The Agreement also contemplates the Parties approving a program to provide for reasonable reductions in irrigation water supply for Los Angeles-owned lands in the Owens Valley and for Enhancement and Mitigation (E/M) programs during periods of dry-year water shortages. Consequently, the Technical Group and the Standing Committee have attempted to evaluate and provide reasonable reductions in other areas to reallocate water for irrigation during the 2015 runoff year. Although the City and the County have not yet agreed to any reductions in E/M projects, the City of Los Angeles has almost entirely reduced the Owens Valley water supply to customers during this irrigation season.
The length and intensity of this four-year drought has surprised most water managers and regulators in the Southwest. The intensity of the scant Eastern Sierra snowpack and potential runoff was not fully realized until early April, which left little time to plan for its impacts, forcing the Department to evaluate operations on a virtual real-time basis. With respect to current conditions, the picture continues to be grim for Angelenos as LADWP will experience an 85% reduction from its normal export from the Eastern Sierra this runoff year.
“The only bright spot in our most recent forecasting is that it appears recent rain events provided additional water that we did not anticipate when we released our Annual Operations Plan in April,” Yannotta added. “Even though most, if not all, of the extremely low snowpack has already melted, recent storms are providing unanticipated run-off into the Eastern Sierra that will allow us to continue irrigating longer than we previously expected.”

The 2015 runoff year is unique in that snowpack was the lowest on record, measuring only 4% of normal, but summer precipitation is appearing somewhat above normal. The hydrologic conditions this year are so different from previous years that there isn’t another year from which to draw a fair comparison. As you would expect, the lack of comparable years has created operational challenges.

LADWP recently received preliminary draft runoff data and field information relating to water availability after the storms. Although Department management is verifying all information, LADWP is confident that there is sufficient water for irrigation in Owens Valley through the end of August.

cover photo by Gary Young

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Inyo LA standing committee meets

Standing Committee talks irrigation

The mood was light and casual Thursday as the Inyo/Los Angeles Standing committee discussed serious business.  The meeting was scheduled to begin at 11am in the Independence board of supervisors chambers, but the pledge of allegiance did not start the session until 11:22.  After the delayed start there was little tension in the meeting, as Inyo and LA representatives agreed on all fronts.

The session opened with the two parties agreeing to a reduction in water supplied to the McNalley ponds and pasture enhancement/mitigation project.   Inyo Water Department Director Bob Harrington noted that the potential pumping wells that could supply the project are in “off” status, and Owens River diversions are not a viable option.

LADWP Aqueduct Manager Jim Yannotta presented the grim numbers associated with runoff and operations.  Yannotta relayed the fact that the anticipated runoff for the first 6 months of the water year are at 25% of normal, and just 36% for the entire year. Yannotta notes this is less than half the flow of the worst year on record.

The operations and runoff update led into the big item before the standing committee, that being irrigation.  Back on On April 27th the LADWP had written ranchers notifying them that all irrigation would end on May 1st, that order was later lifted. At the time the LADWP’s spokesperson Amanda Parsons said, “Collaboration with local partners” will allow the LADWP flexibility with how they distribute water for in-valley uses.  Thursday LA indicated they are able to continue irrigtion to local leases due to approximately 2 thousand acre feet in savings at Owens Lake and by adding 3 thousand acre feet from pumping.  Yannotta indicates the pumping plan is “conservative, and will not affect vegetation or groundwater levels.” Yannotta also noted there is an additional 3 thousand acre feet stored in Crowley Lake that will be released for irrigation.

Staff from both LA and Inyo County indicated they are continuing to work with Memorandum of Understanding members to shift water from the Lower Owens River Project and Owens Lake.  The Sierra Club, California fish and wildlife, the state lands commission, the Owens Valley Committee , and the Great Basin Unified Air Pollution Control District are all a part of the MOU group.   All MOU members need to sign off on any changes.  Between the Lower Owens River Project, Owens Lake, and not supping water to Warren lake, the best estimates show four thousand acre feet of water could be shifted to irrigation. Between projected savings and the revelations of an additional 3 thousand acre feet at Crowley Lake, irrigation water will flow until august. This was certainly good news for ranchers who were in attendance.  Supervisor Matt Kingley was relieved to provide some bit of assurance to local ranchers, “We have bought time, but that’s really important for lease holders, our ranchers. To know that their irrigation is good through the end of July, except for those on creeks that may dry up, that we have no control over.”

Overall,  a clear feel of cooperation dominated the day, as light rain fell in Independence.   “I think the tone of the meting was really positive, obviously we have tough issues we are trying to work though with the city. One thing that I think is important to recognize is that we are all working sort of on one common goal, and that is to figure out the best way to use the water that we have to the best advantage of everyone here in the Owens Valley.”  Said Kingsley.

The next standing committee meeting is set for July 24th, in Los Angeles.

cover photo by Gary Young

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