– Reclamation will be increasing the release from Navajo Reservoir to 950 cubic feet per second (cfs) on Tuesday, June 29, 2010, at 9:00 a.m. Releases are made for the authorized purposes of the Navajo Unit, and to attempt to maintain a target base flow through the endangered fish critical habitat reach of the San Juan River (Farmington to Lake Powell).
The San Juan River Basin Recovery Implementation Program recommends a target base flow of between 500 cfs and 1,000 cfs through the critical habitat area. The target base flow is calculated as the weekly average of gaged flows throughout the critical habitat area.
Unregulated inflow into Navajo Reservoir during the month of May was 265,000 acre-feet, or 96 percent of average. Currently, the daily reservoir inflow is averaging about 850 cfs. NIIP diversions are currently set at 500 cfs. The reservoir water surface elevation is currently 6074.93 feet, which corresponds to a storage content of about 1,550,000 acre-feet.
On June 4, 2010, the National Weather Service’s River Forecast Center issued an updated inflow forecast for Navajo Reservoir for the April through July runoff period. This forecast is projecting a volume runoff into the reservoir of 650,000 acre-feet, or about a 83 percent of average runoff for the Upper San Juan River Basin. Based on this runoff forecast and current reservoir conditions, there will not be a spring peak release this runoff season. To view the most current reservoir elevation, content, inflow and release, click on: Navajo Reservoir Data.
A public meeting on Navajo Reservoir operations will be held on Tuesday, August 24, 2010 at 1:00 p.m. in Farmington, New Mexico. At this meeting, review of last spring and summer reservoir operations, and plans for this fall and winter 2010/2011 operations will be discussed. These are open forum discussions on the operation of Navajo Reservoir with many interested groups participating. Anyone interested in the general operation of the reservoir is encouraged to attend. Please contact Pat Page in Reclamation's Durango, Colorado Office at (970) 385-6560 for information about these meetings or the daily operation of Navajo Reservoir. To view minutes from the last Navajo Operations Meeting, click on: Meeting Notes
Updated June 28, 2010
Email comments/inquires to: ResourceMgr@usbr.gov