Water temperature influences all biological and physicochemical interactions within aquaticsystems. Water temperature monitoring is an essential part of lake management capable of providing early warning signs of climate change using straight-forward, low-cost techniques. Water temperature data acquired in this study will be used to support analyses of trend of the lacustrine component of sockeye salmon habitat. The need for such analyses is acute because climate change will influence lake habitat quality; growth and survival of juvenile sockeyesalmon; and subsistence, recreational, and commercial harvest opportunities. Additionally, data acquired in this project will be eventually combined with data collected by the National Park Service, the University of Washington, and the U.S. Geological Survey’s Alaska Science Center to facilitate analysis and interpretation of lake temperature trend across the entire Western Alaska LCC geography.