Program Overview

​The goal of the Farmland Mapping and Monitoring Program (FMMP) is to provide consistent and impartial data to decision makers for use in assessing nearly present status, reviewing trends, and planning for the future of California’s agricultural land resources. FMMP produces Important Farmland Maps, which are a hybrid of resource quality (soils) and land use information. Data is also released in statistical formats that are compiled within the biennial California Farmland Conversion Report.

A Brief History

The FMMP was established in 1982 in response to a critical need for assessing the location, quality, and quantity of agricultural lands and conversion of these lands over time. FMMP is a nonregulatory program and provides a consistent and impartial analysis of agricultural land and land use changes throughout California. Creation of the FMMP was supported by the Legislature and a broad coalition of building, business, government, and conservation interests.

Signing of legislation creating the Farmland Mapping and Monitoring Program in 1982. Left to right are Assemblyman Charles Imbrecht, Governor Jerry Brown Jr., and Assemblyman Richard Lehman.

The first Important Farmland Maps, produced in 1984, covered 30.3 million acres (38 counties). Biennial farmland conversion data became available with the 1984-1986 Farmland Conversion Report. Data now spans more than 34 years (seventeen biennial mapping cycles) and has expanded to 50.6 million acres as modern soil surveys were completed by USDA. FMMP now maps agricultural and urban land use on nearly 98% of the state's privately held land. ​

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