Newman Lake Flood Control Zone District


Alum Treatment
Upcoming surface alum treatment scheduled between Tuesday, May 3rd and Thursday, May 5th. Treatment will begin around 7 am and wrap up around 5 pm each day, with the public boat launch being used to transport liquid alum from a tanker truck onto the barge. We ask all community members to please give the barge ample space during this time so as to not impede their work. The treatment will be identical to what occurred in 2021, and there are no water-use restrictions during or after alum application. The map below details the treatment area.


Advisory Board Positions
We are accepting applications for three NLFCZD Advisory Board positions that have expiring terms at the end of the year. Please find the attachments which contain an announcement (click to view) with details on these upcoming vacancies and the selection process to refill them, as well as, an Advisory Board application (click to view) for your use in applying for one of the open positions. We are currently excepting applications until all open positions have been filled. 

If you have questions for County staff regarding the Advisory Board positions, please contact Marianne Barrentine via email at

Wave Study Report
The Spokane Conservation District has completed the Newman Lake Wave Study Report. The report documents the research and findings of the Wave Study over the past two years. Please click here to view the report.