Abstract:
Established in 1982, Government Code Section 65570 mandates FMMP to
biennially report on the conversion of farmland and grazing land, and to
provide maps and data to local government and the public.
Purpose:
The Farmland Mapping and Monitoring Program (FMMP) provides data to
decision makers for use in planning for the present and future use of
California's agricultural land resources. The data is a current
inventory of agricultural resources. This data is for general planning
purposes and has a minimum mapping unit of ten acres.
Definitions of FMMP Types:
Prime Farmland (P): Irrigated land with the best combination of physical and chemical
features able to sustain long term production of agricultural crops.
This land has the soil quality, growing season, and moisture supply
needed to produce sustained high yields. Land must have been used for
production of irrigated crops at some time during the four years prior
to the mapping date.
Farmland of Statewide Importance (S): Irrigated land similar to Prime Farmland that has a good combination of
physical and chemical characteristics for the production of agricultural
crops. This land has minor shortcomings, such as greater slopes or less
ability to store soil moisture than Prime Farmland. Land must have been
used for production of irrigated crops at some time during the four
years prior to the mapping date.
Unique Farmland (U): Lesser quality soils used for the production of the state's leading
agricultural crops. This land is usually irrigated, but may include
non-irrigated orchards or vineyards as found in some climatic zones in
California. Land must have been cropped at some time during the four
years prior to the mapping date.
Farmland of Local Importance (L): Farmlands growing dryland pasture, dryland small grains, and irrigated pasture.
Grazing Land (G): Land on which the existing vegetation is suited to the grazing of
livestock. This category is used only in California and was developed in
cooperation with the California Cattlemen's Association, University of
California Cooperative Extension, and other groups interested in the
extent of grazing activities.
Urban and Built-Up Land (D): Urban and Built-Up land is occupied by structures with a building
density of at least 1 unit to 1.5 acres, or approximately 6 structures
to a 10-acre parcel. Common examples include residential, industrial,
commercial, institutional facilities, cemeteries, airports, golf
courses, sanitary landfills, sewage treatment, and water control
structures.
Other Land (X): Land which does not meet the criteria of any other category. Typical
uses include low density rural development, heavily forested land, mined
land, or government land with restrictions on use. This category was
subdivided into R, V, Cl, sAC, and nv beginning with the 2006 data.
Water (W): Water areas with an extent of at least 40 acres.
Area not mapped (Z): Area which falls outside of the NRCS soil survey. Not mapped by the FMMP.
Rural Residential Land (R): This includes residential areas of one to five structures per ten acres.
Vacant or Disturbed Land (V): This consists of open field areas that do not qualify for an
agricultural category, mineral and oil extraction areas, and rural
freeway interchanges.
Confined Animal Agriculture (Cl): This includes aquaculture, dairies, feedlots, and poultry facilities.
Nonagricultural and Natural Vegetation (nv): This covers heavily wooded, rocky or barren areas, riparian and wetland
areas, grassland areas which do not qualify for Grazing Land due to
their size or land management restrictions, and small water bodies.
Constructed wetlands are also included in this category.
Semi-Agricultural and Rural Commercial Land (sAC): This includes farmsteads, agricultural storage and packing sheds,
unpaved parking areas, composting facilities, equine facilities,
firewood lots, and campgrounds.