Last Updated: June 10th 2022
***Notices for the latest release changes are posted here. Email firstname.lastname@example.org or call 970-385-6560 for questions or updates***
Navajo Reservoir – On June 9th the daily average release rate from Navajo Dam was 300 cfs while reservoir inflow was averaging 535 cfs. The water surface elevation was 6028.84 feet above sea level. At this elevation the live storage is 0.945 maf (58% of live storage capacity) and the active storage is 0.322 maf (31% of active storage capacity). The Navajo Indian Irrigation Project (NIIP) is diverting 660 cfs (totaling 74.6 kaf so far in CY2022). The San Juan-Chama project is diverting 121 cfs (totaling 52 kaf so far in CY2022) from the basin above Navajo Reservoir.
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. Releases target the San Juan River Recovery Implementation Program's (SJRIP) recommended downstream baseflow range of 500 cfs to 1,000 cfs through the critical habitat reach of the San Juan River (Farmington, NM to Lake Powell). The release is increasing Monday, June 13th, to 500 cfs and will increase further throughout the month as the Animas River falls. Releases will likely increase to 1200 cfs (or higher as needed) to maintain minimum baseflows this summer.
Preliminary modified unregulated inflow (MUI) into Navajo in May was 168 kaf, which was 69% of average for the month. The volume released downstream totaled 18.6 kaf, which was 18% of average for the month.
The most probable MUI forecast for June, July, and August is 20,000 af (11% of average), 0 af (0% of average), and 14 af (42% of average), respectively.
The April-July runoff forecasts are as follows:
- Min Probable Forecast: 295,000 af (47% of average, a decrease of 15,000 af since the May forecast). So far, observed inflow accounts for 102% of this forecast. This forecast has already been exceeded.
- Most Probable Forecast: 310,000 af (49% of average, a decrease of 70,000 af since the May forecast). So far, observed inflow accounts for 97% of this forecast.
- Max Probable Forecast: 340,000 af (54% of average, a decrease of 140,000 af since the May forecast). So far, observed inflow accounts for 89% of this forecast.
Beginning October 1st of 2021 (the start of WY 2022), the area-capacity table for Navajo Reservoir was updated based on a 2019 Survey.
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 be held on Tuesday, August 23rd at 1:00 PM. This meeting is open to the public, and will be held at the Farmington Civic Center, 200 West Arrington, in Farmington, New Mexico. The meeting will also have a virtual option.Susan Behery email@example.com
Please contact the Operations Group via e-mail at ResourceMgr@usbr.gov for additional information.