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Volunteer lake monitors are an invaluable asset to the Lake Stewardship Program- their efforts result in vast amounts of data for King County Lakes that otherwise wouldn’t be collected.  We are always looking for new volunteers to serve as monitors and back-up monitors.  If you are interested, please contact us!  Contact information can be found at the bottom of the page.  

View your lake's water quality data on the small lakes data and info page.

And for lakes with continuous data loggers you can access lake level and water temperature data on the Hydrologic Information Center.

2022 Lake Stewardship Sampling Schedule




For our volunteers - sign up to receive text or email reminders on sampling days here

Volunteer training workshop

Presentation from the 2021 Lake Stewardship training workshop: 

  • 2021 Pre-Season Workshop topics include:
    • Program overview and reminders
    • King County Pollution Identification and Correction Program
    • Identifying Noxious Weeds
    • Webpage navigation
    • Harmful Algal Blooms (HABs)

The 2018 Lake Stewardship training workshop was held at the Beaver Lake Lodge in Sammamish (25201 SE 24th St, Sammamish, WA 98075 ).  Volunteers, friends, and family learned about the program, went over some sampling tips, reviewed last year's data, and learned about harmful algal blooms. The training workshop is a wonderful opportunity to enjoy some tasty snacks and get to know other lake enthusiasts throughout King County.

Presentations from the 2018 Lake Stewardship training workshop:

Lake Stewardship Volunteer Guide

The Lake Stewardship Volunteer Guide describes the program and monitoring procedures in detail.  If you are a volunteer monitor, please review this guide carefully before you begin monitoring and refer back to it as often as necessary.


How to use a Secchi Disk

How to collect water samples with a Van Dorn water sampler

Lake Stewardship Program staff

If you have any questions or need replacement equipment, please contact the Lake Stewardship Program staff:

Chris Knutson206-477-4739

Wafa Tafesh206-735-6095

For questions about lakes in King County, please contact or call the Water and Land Resources Division front desk at 206-477-4800.