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Commissioners Set Weekly Outflow From County Reservoir at 35 CFS, Cite Uncertain Inflows
Summary
Granite County commissioners voted to set reservoir outflow at 35 cubic feet per second (CFS) for one week while monitoring inflows and weather forecasts. Staff and a regional fish manager recommended the level pending precipitation; commissioners noted downstream impacts and agreed to reassess weekly.
Granite County commissioners voted to set releases from the county reservoir at 35 cubic feet per second for one week and to re-evaluate weekly based on inflow and weather forecasts.
Dam tender and water management staff presented streamflow and reservoir-level data to the board. Todd Blight (reported by staff) recommended a temporary reduction to 30 CFS in his written recommendation, but during discussion commissioners and staff settled on 35 CFS for the coming week to balance fisheries concerns, agricultural needs and storage. One commissioner said the recommendation was “to drop it to 30,” and another noted they were “stuck on 35” pending precipitation forecasts.
Staff reported reservoir elevation, inflow trends and forecasted weather; the regional fish manager and staff said runoff was approximately two to three weeks ahead of normal and that precipitation this week could change the decision. Commissioners highlighted downstream bank erosion risk and said they would monitor downstream reaches if outflow levels change. A motion to maintain 35 CFS for the week was made, seconded and approved by the board during the meeting.
The board instructed staff to reassess outflows weekly and to monitor downstream conditions. No change to long-term policy was made; this was a short-term operational decision contingent on weekly hydrology updates and weather.
