10/12/2026
Lake Sawyer Advocacy Group to Present Research on Declining Lake Levels to Black Diamond City Council
BLACK DIAMOND, WA — The Lake Sawyer Advocacy Group (LSAG) will present more than a decade of lake water level research, key findings, and a future strategy to address declining summer water levels to the Black Diamond City Council on Tuesday, October 13, 2026 at 6:00PM.
LSAG’s research points to a potential connection between Lake Sawyer’s water level declines and groundwater pumping from Covington Water District’s (CWD) 222nd Street wells, located approximately 600 feet from the lake. LSAG is concerned that CWD’s water sales to other utilities and planned expansion could increase water level declines in the future.
From July through September, lake levels can drop significantly, exposing shorelines, leaving boats high and dry, and making the public boat launch unusable. These declines also raise concerns about the lake’s ecosystem, fish and wildlife habitat, and lakefront property values.
After more than 10 years of data collection, legal research, and geological investigation, LSAG believes further scientific analysis and regulatory involvement are essential to understanding the causes of declining lake levels and identifying effective solutions.
Comprised entirely of unpaid volunteers with professional expertise, LSAG is committed to sharing accurate information, addressing misinformation, and protecting Lake Sawyer from the potential impacts of excessive groundwater extraction.
“Lake Sawyer is a valuable natural resource and a vital part of our community. We need to understand what is driving these declines and take meaningful steps to protect the lake for future generations,” said a representative of LSAG.
LSAG encourages residents and concerned community members to attend the presentation and learn more about the research and proposed next steps.
City Council Meeting Details
Date: Tuesday, October 13, 2026 Time: 6:00PM
Location: Black Diamond City Council Chambers
25510 Lawson Street, Black Diamond, WA 98010
Meeting Agenda: https://blackdiamondwa.gov/1220/Minutes-Agendas
Hybrid meeting: Attend in person or participate virtually or by telephone.
Join via Zoom.
Meeting ID: 445 447 7047
Password: Council
A we**am is not required, but audio is needed to hear the proceedings.
Join by telephone:
+1 253 215 8782 (Tacoma)
+1 206 337 9723 (Seattle)
Meeting ID: 445 447 7047
Passcode: 426953 #
About LSAG
The Lake Sawyer Advocacy Group is a committee of the Lake Sawyer Community Club dedicated to safeguarding Lake Sawyer’s water levels, fish, wildlife, and aquatic habitat. Its volunteer members work to educate the public and elected officials, engage regulatory agencies, and advocate for responsible water resource management.
Contact: Lake Sawyer Advocacy Group (LSAG)
Email: [email protected]