Conservation Division


Conservation DivisionPlanning, Building & Environmental Services


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Environmental Health

Code Compliance


Conservation Division

The Conservation Division is available for consultation and application processing services weekdays (excluding holidays) from:


If you have questions about erosion control plans, agricultural preserve (Williamson Act) contracts, mining inspections/permits, lot line adjustments, as well as a number of other land use/planning applications, please use the informational links provided, visit us at our public counter, or give us a call.

Main Phone: (707) 253-4417  Toll Free: (877) 279-2976
Main Fax: (707) 253-4545  Main E-mail:


Erosion Control Plans

Evaluation of agricultural/vineyard or development plans on slope over 5% for conformance with Conservation Regulations and the California Environmental Quality Act (CEQA).

Williamson Act Ag. Contracts

A state program enabling the County to enter into contract with land owners to voluntarily restrict parcel use to agricultural in return for preferential property tax assessments.

Mine & Quarry Oversight

Conducts annual inspections and review of reclamation plans and security assurances. If you'd like to learn more about this program contact Brian Bordona at 707-253-4417.


Many Division staff serve as support-staff for a number of special committees and boards, including:

The Napa County Wildlife Conservation Commission, an eight member commission that advises the Board of Supervisors on policy matters and local funding proposals (via grant cycle offered annually in August) that preserve and enhance wildlife and their habitats in Napa County;


The Watershed Information Center & Conservancy (WICC) Board of Napa County - Look for us in our new location - Public Works Department, Flood Control & Water Resources

Napa County Regional Parks and Open Space District

The Napa County Regional Parks and Open Space District, a special district governed by a directly elected board of directors authorized to plan, improve and operate a system of public parks, trails, outdoor recreational facilities, and outdoor science and conservation education programs, as well as to protect and preserve natural areas, wildlife habitat and other open space resources of Napa County; and