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Avista reducing water level in Long Lake Reservoir
Beginning June 15 Long Lake Reservoir water level to decrease


SPOKANE, Wash. – June 7, 2016:  Avista will begin in-water work on June 15 to make improvements at Long Lake Dam to address total dissolved gas (TDG) levels as part of the Spokane River Project license requirements. High levels of TDG can occur when river water plunges over a natural waterfall or a man-made dam, and it can be harmful to fish living downstream. 

The changes being made at the Dam will require that Long Lake Reservoir be drawn down six inches to one foot through the end of September. Beginning in October the Reservoir will be drawn down three feet as long as to the end of the year.

As with any construction project challenges may arise that could delay progress or change plans. We will keep you informed, if we do happen to experience project delays.

Please remember water levels and conditions around the dam are subject to change at any time, river-users should exercise caution whenever using the waterways. Customers can access waterflow information at avistautilities.com/waterflow or if you prefer the information is still available on our 24-hour telephone information line. You will find notification of anticipated elevation changes on Lake Spokane, the Spokane River and Coeur d’Alene Lake. In Washington call (509) 495-8043 and in Idaho call (208) 769-1357. The recorded information is provided to advise shoreline property owners, commercial and recreational users of changes in the lake elevations and river flows that may affect plans for water use.

About Avista Utilities
Avista Utilities is involved in the production, transmission and distribution of energy. We provide energy services and electricity to 375,000 customers and natural gas to 335,000 customers in a service territory that covers 30,000 square miles in eastern Washington, northern Idaho and parts of southern and eastern Oregon, with a population of 1.6 million.  Avista Utilities is an operating division of Avista Corp. (NYSE: AVA). For more information, please visit www.avistautilities.com.

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