Last Updated: October 4th, 2019
***Notices for the latest release changes are posted here. Email email@example.com or call 970-385-6560 for questions1***
Navajo Reservoir –On October 2nd, the daily average release rate from Navajo Dam was approximately 593 cfs while reservoir inflow (modified unregulated) was averaging approximately 27 cfs. The water surface elevation was 6062.9 feet above sea level. At this elevation the live storage is 1.39 maf (81 percent of live storage capacity) and the active storage is 0.72 maf (70 percent of active storage capacity). NIIP was diverting 330 cfs from the reservoir. The river flow measured at the Animas River at Farmington USGS gage was at 203 cfs. River flow at the San Juan River at Four Corners USGS gage was 632 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 September was 3 kaf (8 percent of average for the month).
Forecast modified-unregulated inflow to Navajo over the next three months (October, November and December) are projected to be: 18 kaf (38 percent of average), 25 kaf (75 percent of average), and 24 kaf (96 percent of average), respectively. Releases for the fall and winter will be made to target the San Juan River Recovery Implementation Program's recommended baseflow range of 500 cfs to 1000 cfs. Releases will likely range between 300 cfs and 600 cfs for the remainder of the calendar year. Analysis of current carryover storage with 35 years of historical hydrology (1981 - 2015) shows that Navajo has a 60 percent chance of filling to at least 6070 feet, and a 50 percent chance of conducting a spring peak release in the spring of 2020.
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 Navajo Unit Coordination Meeting will be held Tuesday, January 21, 2020 at 1:00 pm at the Farmington Civic Center (200 West Arrington, Farmington, NM).Susan Behery firstname.lastname@example.org