Last Updated: August 6th, 2020
***Notices for the latest release changes are posted here. Email firstname.lastname@example.org or call 970-385-6560 for questions***
Navajo Reservoir – On August 4th, the daily average release rate from Navajo Dam was approximately 600 cfs while reservoir inflow was averaging approximately 331 cfs. The water surface elevation was 6054.43 feet above sea level. At this elevation the live storage is 1.28 maf (75 percent of live storage capacity) and the active storage is 0.617 maf (59 percent of active storage capacity). NIIP is diverting 774 cfs. The river flow measured at the Animas River at Farmington USGS gage was at 304 cfs. River flow at the San Juan River at Four Corners USGS gage was 735 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 July was 3 kaf (6 percent of average for the month). Final April - July modified unregulated inflow into Navajo Reservoir was 347,581 acre-ft (47% of average).
The most probable inflow forecast for August is 8,000 acre-ft (18% of average), for September is 17,000 acre-ft (39% of average), and for October is 29,000 af (62% 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 through the critical habitat reach of the San Juan River (Farmington, NM to Lake Powell). Current modeling shows the release will most likely vary between 500 and 900 cfs to accomplish this for the remainder of summer.
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. In lieu of an in-person meeting, the August edition will be sent out in report form.