State of the Lake

Flathead Lake is one of the cleanest large lakes in the world - a rare and priceless public resource. Flathead Lake is a place where we create family memories and friendships. We enjoy swimming, boating, and fishing in its amazingly transparent waters. It is the crown jewel of the Crown of the Continent, a vital part of this healthy ecosystem, and worthy of our efforts to understand and protect it.

Regular water quality monitoring is essential in order to provide the base level data needed for state and federal resource managers and politicians to make informed science-based decisions that protect the Flathead Lake-River system. We at FLBS continue to work to understand and protect Flathead Lake and its watershed, to ensure that you and your family can continue to enjoy the Flathead Lake that you have grown to love.

FLBS buoy panorama

State of the Lake Annual Report

State of Flathead Lake data is gathered continuously throughout the year and is released as soon as each complete water year (October-September) has been compiled and analyzed. Updated results will be posted as soon as they become available.