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Avista warns Spokane River users of low water levels above PF Dam   

Tags: Avista Utilities, Hydro power, Idaho, Lake Coeur d'Alene, Spokane River, Weather

Heavy rains require action, lowering of river
 
Post Falls Dam
Post Falls Dam from above.
Post by Hugh Imhof
 
Avista will need to open additional gates at the Post Falls Dam today to allow the increased flow in the Spokane River to pass by the dam. This action is due to a large amount of rain in the North Idaho mountains over the last 24 hours which is causing Coeur d’Alene Lake to rise. 

Avista is waiting to open the biggest gate until this afternoon to allow Spokane River users to move their boats and equipment to a safe location in the river. The elevation of the river near the Spokane Street Bridge this morning is about 2,124.8 ft., which is about 3 feet below summer level.   Once the bigger spill gate is opened the river level will drop as much as 7 feet below summer level. 

Coeur d’Alene Lake is currently slightly above its normal summer level of 2,128 ft. above sea level which Avista is required to maintain until after Labor Day.

As more water flows in the Spokane River between the lake and the dam, Avista must open more spill gates to allow the water to pass so that the lake remains at or near 2,128. The more spill gates that are open, the lower the elevation of the water above the dam, near the Spokane Street Bridge.   

Boaters and other river users are reminded that weather conditions can cause rapid changes in river levels. Please exercise caution on the water.
 
Posted by  System Account  on  6/21/2010
2  Comments  | 0  Links to this post | Bookmark this post with:          
 

Comments


Robert V  commented on  Tuesday, June 29, 2010  4:55 PM 
When are you going to allow the boat launch at Q'emiln park to open?


Dan K  commented on  Wednesday, June 30, 2010  4:21 PM 
Today is June 30, 2010. It looks like we won’t be able to shut the gates at Post Falls Dam for a few more days. There is just too much water coming from all the recent rain in the mountains. As you may know the city of Post Falls prohibits any activity in the water between the Spokane Street Bridge and the dam while the spill gates are open. So unfortunately the boat ramp will still be closed this weekend.

For current information on Spokane River flows and Coeur d'Alene Lake elevation (includes anticipated changes in flow and elevation for the coming week) call 208-769-1357. For information on Spokane River flows and Lake Spokane elevation (includes anticipated changes in flow and elevation for the coming week) call 509-495-8043.

Links to weather and water flow information are available on the Avista Utilities web site at http://www.avistautilities.com/inside/resources/Pages/waterflow.aspx
-Dan Kolbet
Avista Communications Manager

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