Navajo Reservoir

Navajo Dam

Current Status

Last Updated: May 7th, 2020

***Notices for the latest release changes are posted here. Email sbehery@usbr.gov or call 970-385-6560 for questions***

Navajo Reservoir On May 6th the daily average release rate from Navajo Dam was approximately 476 cfs while reservoir inflow (modified unregulated) was averaging approximately 2,821 cfs. The water surface elevation was 6057.67 feet above sea level. At this elevation the live storage is 1.32 maf (77 percent of live storage capacity) and the active storage is 0.66 maf (63 percent of active storage capacity). NIIP is diverting 710 cfs. The river flow measured at the Animas River at Farmington USGS gage was at 1,700 cfs. River flow at the San Juan River at Four Corners USGS gage was 1,800 cfs.


Releases from Navajo Dam are made for authorized purposes of the Navajo Unit and are pursuant to the Record of Decision for the Navajo Reservoir Operations.
Preliminary modified-unregulated inflow into Navajo (inflow adjusted for upstream change in storage, reservoir evaporation and exportation from the basin) in March was 80 kaf (50 percent of average for the month).


Forecast modified-unregulated inflow to Navajo over the next three months (May, June, and July) are projected to be: 195 kaf (70 percent of average), 78 kaf (35 percent of average), and 12 kaf (18 percent of average), respectively.


The April through July runoff forecasts are as follows:
Min Probable: 270 kaf (37 percent of average)
Most Probable: 365 kaf (50 percent of average)
Max Probable: 475 kaf (64 percent of average)

Releases for the fall and winter will be made to target the San Juan River Recovery Implementation Program's recommended downstream baseflow range of 500 cfs to 1000 cfs.  To accomplish this, releases will likely range between 300 cfs and 600 cfs throughout the spring. Based on current storage levels at Navajo and available water calculated as recommended by the San Juan River Recovery Implementation Program, there are no plans for a Spring Peak Release   at Navajo Reservoir this spring.


Reclamation conducts Public Operations Meetings three times per year to gather input for determining upcoming operations for Navajo Reservoir. Input from individuals, organizations, and agencies along with other factors such as weather, water rights, endangered species requirements, flood control, hydro power, recreation, fish and wildlife management, and reservoir levels, will be considered in the development of these reservoir operation plans. In addition, the meetings are used to coordinate activities and exchange information among agencies, water users, and other interested parties concerning the San Juan River and Navajo Reservoir. The next meeting will take place in late August, with meeting details forthcoming.

Susan Behery
sbehery@usbr.gov

Contact

Please contact the Operations Group via e-mail at ResourceMgr@usbr.gov for additional information.

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Last Updated: 5/14/20