Spokane River and Clark Fork River work targets fish survival, habitat and doing the right thing
If you’ve ever dipped a fishing rod into any of our local lakes or rivers you’re already aware of the great natural resources we enjoy in the Northwest. Because Avista operates hydroelectric facilities on the Clark Fork and Spokane rivers, we’ve made a commitment to the environment as part of our daily operations throughout Montana, Idaho, Washington and Oregon.
Two great examples of Avista’s commitment to environmental stewardship are reducing invasive lake trout in Lake Pend Oreille and studying rainbow trout spawning on the Spokane River. These projects were featured in a 2010 “Safekeeping” segment of the Columbia Country television program which aired on Fox stations.
Clark Fork River
The Clark Fork Project segment features an ongoing collaborative project on Lake Pend Oreille to reduce the population of invasive lake trout. Lake Pend Oreille was once a world-class fishery for rainbow trout, bull trout and kokanee. In recent years, the lake has been taken over by lake trout (also called mackinaw), which do not coexist well with native bull trout, and which prey on kokanee, depleting the food sources for rainbow and bull trout. This project offers angler incentives and brings in commercial netters to “fish out” the invasive lake trout. Since this program’s inception more than 139,000 lake trout have been removed from the lake.
Avista helps fund the Lake Pend Oreille project through our Clark Fork Project license, which includes Noxon Rapids Dam in Montana and Cabinet Gorge Dam in northern Idaho.
The Spokane segment features a rainbow trout spawning study on the Spokane River, part of our 50-year operating license for the five hydroelectric developments that make up Avista’s Spokane River Project. The spawning study is part of a 10-year collaboration with Washington Department of Fish and Wildlife (WDFW) to better understand the relationship between river flow and the rainbow trout population and their spawning habitat from Monroe Street Dam downstream to Nine Mile Dam.
In each of the last two years, in partnership with WDFW, we’ve captured and tagged more than 800 rainbow trout in the river below the Monroe Street Dam downstream to the Nine Mile Reservoir. This part of the 10-year study is to understand how many trout are in the Spokane River and the habitat they use. We will capture and tag rainbow trout again this October.
A similar project has been in effect for several years in the Upper Spokane River, and we hope this project will help us better understand how managing river flows affects water levels in Lake Coeur d’Alene and habitat for rainbow trout downstream. By doing so, we hope to ultimately encourage growth of the rainbow trout population in the Spokane River.
Both of these projects show how Avista works with others to care for the natural resources affected by our projects. They are great examples of how we make our commitment to environment part of our daily operations throughout Montana, Idaho, Washington and Oregon.