The Nacimiento Regional Water Management Advisory Committee - NRWMAC represents visitors, property owners and enthusiasts of all sorts that enjoy Lake Nacimiento.

Our goal is to maximize the water level in Lake Nacimiento throughout the summer. Our site provides current information about the lake, projects, and happenings in, on or about lake Nacimiento in an easy to find, easy to understand format. more...

Headline News

NRWMAC Continues to Promote Quagga Mussel Prevention Programs sticky icon

 NRWMAC in partnership with San Luis Obispo County Public Works, and Monterey County Water Resources Agency (MCWRA) continues to provide Training Programs and Community Information Presentations on the threat that Quagga Mussels present to Lake Nacimiento.

What is an Interlake Tunnel and What Does it Mean for You? sticky icon

The Nacimiento Regional Water Management Advisory Committee (NRWMAC) is sponsoring a Town Hall Meeting where Monterey County Water Resources Agency (MCWRA) will come and explain their tunnel project, potential benefits, and answer questions from land owners and lake enthusiasts.

WARNING! New DMV sticker can be misleading! sticky icon

When you receive your 2014 boat registration from DMV you will also receive sticker like the one shown above. The 2015 Mussel Fee is paid to the State of California to fund research and prevention pro-grams. It DOES NOT replace the San Luis Obispo and Monterey County requirement that all vessels en-tering our lakes be inspected and determined to be mussel free before being allowed to launch.

Current Lake Levels

Click Here for a PDF document showing current lake levels.



Mussel Inspector Refresher Material

Attention Mussel Inspectors,
Here is some refresher material on some things that have changed this year with mussel inspection.  Please download the PDF below. 

Paso Robles Press: Poor H20 quality prompts warning in Heritage Ranch

Customers of the Heritage Ranch Community Services District [CSD] are being notified that water supplied by the district has exceeded a government drinking water standard. The district assures its customers that this is neither an immediate health risk nor a water quality problem. 


New NWRMAC logo

Vessel Screening Permit (INSPECTOR SEAL REQUIRED)

Mussel Self Cert Form 


Lake Nacimiento Weather Conditions

Weather Underground PWS KCALAKEN1