Flathead Lake Citizen Science

The Flathead Lake Citizen Science program is beginning its third field season! Data collected during our first season helped support the expansion of regular water quality monitoring by FLBS in Polson Bay. And, last year, our citizen science volunteers observed and recorded the clearest water in 25 years!

Strong citizen science can be a community driven way to continue to monitor our freshwater systems when federal and state funding for water quality monitoring declines. Unfortunately, threats to clean water are only increasing, so with the help of our citizen science volunteers we continue to keep a watchful eye on Flathead Lake and watershed.

Thank you to the Greater Polson Community Foundation for its financial support of this new and exciting program.

Read about the 2018 Flathead Lake Secchi Dip-in results.

GET INVOLVED: Contact Hilary Devlin at or 406-883-1341.

secchi disk

The Secchi Dip-in is a nationwide program and YOU can participate! Adopt a Secchi disk and dip-in to Flathead Lake to measure water clarity!  The 2019 Flathead Lake Secchi Dip-in measured the clearest water in Flathead Lake in 25 years!  Participate in the upcoming 2020 Flathead Lake Secchi Dip-in to learn more about Flathead Lake, and learn how water clarity in Flathead Lake compares to other lakes around the country.

Periphyton Study – Thanks to the support of the Greater Polson Community Foundation, we will study periphyton around Flathead Lake in 2020. Periphyton is the light brown or green slime covering rocks in the shallow waters, and a complex mixture of algae, bacteria, microbes, and detritus, and is a vital part of a lake’s ecosystem.


Whitefish Diet Study

Whitefish Diet StudyDo you enjoy fishing for and keeping whitefish? We need you to collect stomach samples and be a part of this fascinating ecological study.



Flathead Lake Citizen Science Initiative

Get involved in the Flathead Lake Citizen Science Initiative

For more information, contact Hilary Devlin at or 406-883-1341.