Skip to main content

Mussel Inspections

ALL Vessels that intake water, motorized and non-motorized


  1. HROA members and tenants with vessels that meet the criteria, are encouraged to sign up for the HROA Inspection Program for 3, 6 or 12 months.  Details and instructions are on the forms to the right.  To sign up, you must complete the agreement and a vessel screening permit for each vessel. 

  2. The mussel program no longer carries mussel inspection over from the previous season.  New paperwork is required annually for the program.  Vessel screening permits are required for each vessel, as well as a current decal

  3. On-demand inspections and program initial inspections are available at the HROA office Monday through Friday from 8:00AM to 12:00PM. 

  4. The Mussel Inspection Kiosk is scheduled to open April 6, 2024 from 8:00AM to 2:00PM on Saturdays and Sundays only. 

  5. Effective May 17, 2024 through the end of the boating season, the Mussel Inspection Kiosk will also be open on Fridays. The kiosk at the HROA Marina will be open Fridays from 12:00PM - 6:00PM, Saturdays from 8:00AM - 4:00PM, and Sundays from 8:00AM to 2:00PM.  

  6. Currently after 12:00PM, mussel inspections will be available by appointment if scheduled no later than the day prior to the date of inspection. Boaters can contact the HROA at (805) 238-9641 x451 to set up an appointment.

  7. On weekends, without a mussel inspection, boaters must go to the Main Marina at the Nacimiento Lake Resort to receive inspections and will have to launch from there.  For details and directions, visit 

  8. In order to launch from the HROA Marina, you must receive an inspection from an HROA inspector. Inspections at the Main Marina are not transferrable, however a banded boat (see below for instructions) from the marina will expedite the mussel inspection process at HROA. This restriction is imposed by the County of San Luis Obispo and is not negotiable.

  9. When launching from the Main Marina during the week, if you are planning to get an HROA inspection in the near future, ask Monterey County Main Marina staff to band the boat when you come off the lake.  You will still need an HROA inspection to launch from the HROA Marina, but the band will ensure you are not declined an HROA inspection because the vessel is still wet.

  10. The Mussel Inspection Kiosk at the HROA Marina will remain on the schedule above until the lake levels drop to below 730'.   With the current water levels, the ramp is expected at this time to remain open for the full boating season and beyond.  Check here for lake level and boating season updates

  11. When the HROA Launch Ramp closes, the Kiosk closes and the HROA Mussel Inspection Program ends.  Remaining inspections will not carry over.  

  12. If you have questions, please call the HROA Member Services Office at (805) 238-9641 x451 or send an email to [email protected].


To ensure we can continue to have a self-supporting Mussel Self-Inspector program, effective January 1, 2019, self-inspectors are required to either:

  • Pay $25.00 annually


  • Volunteer four (4) hours during the peak season

Based on analysis and recommendations by the Marina Committee, this requirement was adopted by the Board of Directors at the September 21, 2018 meeting.

Please contact the HROA Member Services Office at (805) 238-9641 x451 to schedule volunteer hours or to pay.


Learn about Quagga Mussels here:

E1: Intro to Zebra & Quagga Mussels

E2: Zebra & Quagga Mussels

More on Zebra & Quagga Mussels