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Organization Title
Farmland Mapping and Monitoring Program
1984 to 2002 TIME SERIES
Vineyard Expansion in Coastal California

Planting of wine grapes was a significant trend in the late 1990's, affecting agricultural land use patterns in coastal and bay-influenced counties.  Vineyards replaced less intensive agricultural uses such as pastures and field crops, as well as native oak woodlands.  By 2000, state agricultural statistics indicate that acreages for wine grapes surpassed those for table and raisin grapes combined.  FMMP mapping indicates that this trend slowed between 2000-2002 in response to market saturation. 

Examples of large areas of change are shown below. 

Sonoma Valley,
Sonoma County
  • Irrigated acres in the county increased by more than 26,000 between 1984 and 2002.

  • 58% of this increase occurred on lower quality soils known as Unique Farmland.

  • Urban land extent in Sonoma County also increased, by more than 14,000 acres.

Vineyard development in Sonoma Valley, 1984-2002.

Salinas Valley,
Monterey County
  • Irrigated acres in the county increased by just under 16,000 between 1984 and 2002.

  • 92% of this increase occurred on lower quality soils known as Unique Farmland.

  • Urban land extent in Monterey County also increased, by more than 11,000 acres.

Vineyard development in Salinas Valley, 1984-2002.

Los Alamos Valley,
Santa Barbara County
  • Irrigated acres in the county increased by almost 18,000 between 1984 and 2002.

  • 55% of this increase occurred on lower quality soils known as Unique Farmland.

  • Urban land extent in Santa Barbara County also increased, by just under 8,000 acres.

Vineyard development in Los Alamos Valley, 1984-2002.