RIVERS --Spokane River flows through Post Falls Dam will be reduced starting Monday, Dec. 7, to accommodate the Sullivan Road West Bridge replacement project, Avista says.
The flows will be reduced to between 1,100 cfs and 1,500 cfs. The decreased flow will allow the contractor for the bridge replacement to safely remove sandbags that are in the river bed.
The discharge from the dam will gradually be decreased over a four to five hour period so that the elevation of the river BELOW the dam decreases at no more than four inches per hour in accordance with the Spokane River Federal Energy Regulatory Commission (FERC) license.
The elevation of the water ABOVE Post Falls dam (on the Spokane Street side of the dam) may rise a small amount as the discharge through the dam is decreased.
Once the work is complete the river flows will be restored to normal fall flows and the elevation of the water above Post Falls dam will decrease back down to present levels.
Monitor flows online at avistautilities.com/waterflow .
