2020 Upper Snake River Operations Update Purpose
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(Friday, April 10, 2020) Subject: 2020 Upper Snake River Operations Update Purpose: The purpose of these Updates is to provide information regarding Reclamation's operations and basin conditions as the season progresses. The operations outlined in this update are based on the best data available at the time and are subject to change as new information becomes available. For additional information and resources, please visit our website at: https://www.usbr.gov/pn/hydromet/uppersnake/. *Highlights *Reclamation’s April through July runoff volume forecast for the Snake River above Heise is 3,450,000 acre-feet (af), which is 107% of average. *The Bureau of Reclamation will host a meeting to present streamflow forecasts and projected reservoir operations for Jackson Lake Dam and other Snake River reservoirs the evening of Thursday May 21, 2020 in Jackson, Wyoming. On Friday May 22, 2020, Reclamation will host the 2020 Upper Snake Windshield Snow Survey Tour through the headwaters of the Snake River watershed. Please contact Darrin Fredrickson, 208-678-0461 ext. 17, for additional information and to RSVP. Operations Summary *Jackson Lake: Jackson Lake Dam is currently releasing 385 cubic feet per second (cfs) and will be increased to 1,000 cfs on Monday, April 13. Releases are being managed to achieve reservoir targets in preparation for the primary runoff period. *Palisades: Palisades Dam is currently releasing 10,250 cfs and will be increased to 12,000 cfs on Monday, April 13. Releases will continue to be adjusted to achieve reservoir targets in preparation for the primary runoff period. *Ririe: Ririe Dam is currently releasing 0 cfs and will be increased to 50 cfs on Monday, April 13 to manage reservoir levels. *American Falls: American Falls is currently releasing 10,250 cfs and will be increased to 11,000 cfs on Friday, April 10 to manage reservoir levels *Milner Dam: Depletions between American Falls Dam and Milner Dam are resulting in approximately 5,600 cfs being released to the Snake River below Milner. Releases to the river will fluctuate relative to changes in upstream reservoir operations and canal diversions over the next several months. Reservoir levels, reservoir discharge and river flows can be monitored on the USBR Hydromet page here: https://www.usbr.gov/pn/hydromet/ The Upper Snake “teacup” diagram which provides a graphical overview of system conditions can be accessed here: https://www.usbr.gov/pn/hydromet/burtea.html .