Our herbicide contractor, Aquatechnex, is planning on treating submerged weeds in Zones Z3-4-5-6 on Friday, July 31st, weather permitting. (Treatment Map LINK)
LINK to the recent Treatment Notice mailed to all OLMD residents.
LINK to the 2026 APAM (Aquatic Plant and Algae Management General Permit) issued by the Washington State Department of Ecology.
Lily pad treatments in all Zones 1 thru 7 will occur after July 31st due to the WDFW rookery restrictions. We will let you know when we have specific dates.
Expected Results
The overall goal for weed management is control not elimination. Eliminating all the weeds in our lake would make for an unhealthy and unnatural ecosystem. Weeds play an important role in the health of our lake. It is only when we have invasive weeds or native weeds that reach unhealthy densities and impede recreational use that control is deemed necessary.
Other useful links:
- Results of Algae Testing on July 21, 2026 LINK
- Weed Treatments LINK
- Is My Well Safe During Weed Treatments? LINK
- Weed Categories LINK
- Yard Care is Lake Care LINK
IMPORTANT REMINDER – Mark your calendar!
FREE LUNCH / ANNUAL OLMD MEETING (LINK)
Saturday, September 12, 2026 from noon to 3pm
Where: Bronson Beach Community Club (4122 119th Avenue SE, Tenino, WA 98589
When: Sept. 12, 2026
Schedule
- Noon-1pm lunch provided by the OLMD Steering Committee
- 1-3pm Annual OLMD Meeting with guest speakers
