Skip to main content

COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at

Public Works will re-open our front counter to the public on July 6 and start providing some modified services.  Our hours will be 8 – 5, with closure from 12 – 1:30 for sanitation. Masks are mandatory in our building, and we ask that you adhere to physical distancing protocol. We will have limited services at our front counter and will not be accepting drop in meetings.  Please contact 805-781-5252 to make an appointment with staff.  Bus passes can be purchased at the Kiosk on the corner of Osos and Palm or by phone via Follow us on Twitter @SLOCountyPWD for the latest updates.

Return to the top of the page
County Seal

Public Works

County of San Luis Obispo

Lake Nacimiento Resident Vessel Program

Thank you to all of our volunteer inspectors for all your help!

The Resident Vessel Program recognizes that many boaters keep their vessels solely at Lake Nacimiento and therefore pose a low threat of mussel infestation.

This program is an additional feature of the Mussel Prevention Program available to participating, eligible private launch ramps. There are two main types of participating, eligible private launch ramps: community ramps and easement ramps. The community ramps refer to those private launch ramps participating in the program, which have governing bodies/ boards. The easement ramps refer to those private launch ramps participating in the program, which do not have governing bodies/ boards. This differentiation led to slightly different modes of enrolling the two types of private launch ramps. 

For more information on eligibility and enrollment, read the full Resident Vessel Program and the Resident Vessel Program brochure.

Private Ramp Coordination

Each community will determine the best means of managing its certified screeners, boating traffic, and Vessel Screening Form based upon the minimum requirement of the program standards. Please contact your community's Mussel Coordinator to find out more about your community's program, and how you can help keep Lake Nacimiento mussel-free!

Please contact the SLO County Mussel Prevention Hotline at (805)788-6006 for the full list of individual private ramp mussel coordinators.


Invasive Mussels