News Release Archive

Yakima Basin Water Supply - March Forecast

Media Contact: John Redding, (208) 378-5212, 03/08/2007 18:47
Chuck Garner, cgarner@pn.usbr.gov

For Release: March 08, 2007

The Bureau of Reclamation has just released the March 2007 forecast for irrigation water supply in the Yakima Basin. The forecast is based on flow data, current snow pack, and this year's precipitation data.

"We are expecting a near normal or above normal water supply at this time," said Chuck Garner, Yakima Project river operations supervisor. "The March 2007 forecast indicates a full water supply for all water users."

As of March 1, system storage was a healthy 116 percent of average at 66 percent full.

"We are very encouraged by the current snow pack and reservoir storage. We do hope the snowmelt runoff comes a little more slowly than it did last year," Garner said.

At this time both junior and senior water rights holders are expected to receive their full water supply. Specific water delivery levels will not be determined until later in the year.

The weather conditions that determine precipitation, the run-off timing, and demand for water are critical in determining whether the reservoirs fill, the amount of water available for irrigation, and possible rationing levels. If warm, dry weather prompts an early run-off, the situation could degrade.

Water demands requiring storage releases, even prior to storage control, may be charged to the users' total entitlement.

Reservoir storage on March 1, 2007

Reservoir

Content (acre-ft)

Total Capacity

Percent of Capacity

Keechelus

94,760

 157,800

60

Kachess

161,470

239,000

68

Cle Elum

268,040

436,900

61

Bumping

14,805

33,700

44

Rimrock

165,199

198,000

84

Totals

704,274

1,065,400

66

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