What’s new:

2021 Cottage Lake Fundraising Concert – Sunday, September 12th from 2pm-5pm

Friends of Cottage Lake is having a fundraiser to support our efforts to improve the health of Cottage Lake. We are hoping to raise $8000 to help pay for a milfoil treatment next summer and are continuing to investigate treatments to control phosphorus levels in the lake with the goal of eliminating toxic algae blooms. Please see our Concerts page for more information.

Amazon also supports charities:
Shop at smile.amazon.com/ch/91-1593099 and Amazon donates to Friends of Cottage Lake.

Lake Monitoring Update – 08/25/2021
The sample submitted for toxin testing from Cottage Lake on 8/23 came back with a microcystin at level of 13 µg/L, exceeding the recreational use guideline of 8 µg/L. Based on this result, the lake is considered unsafe for swimming (see yellow warning here: https://www.nwtoxicalgae.org/HealthRisks.aspx)

Milfoil Update (08/26/21):
We last treated the lake for Eurasian milfoil in June of 2018 – we saw some milfoil return in 2019 and more in 2020, but it has not yet grown back to pre-treatment levels. See our milfoil page for more information.

Water Lilies – last treated in 2017 – watching the remaining lilies – no treatment currently planned.
See the water lily page for more info.

Fish Stocking information for 2021:
Cottage Lake Fish Stocking (stocked on April 12th)

Join Friends of Cottage Lake on Facebook:
Click here to apply to join the private group or check out our public page here: https://www.facebook.com/FOCL.Woodinville​

Who we are:

Friends of Cottage Lake (FOCL) is a non-profit, community-based group committed to improving and defending the health and continued enjoyment of Cottage Lake in Woodinville, WA.

We are currently working with King County to apply for grant money to help fund various lake improvement projects. In the summer of 2005, our lake was chosen as a recipient of a Centennial Clean Water Fund grant—this grant targets the phosphorus problem and funded water quality monitoring and community outreach programs for 5 years.

FOCL is also working with the community to deal with the water lily problem and the Eurasian Milfoil infestation on Cottage Lake. See the links for more information.