Table 1. Areas of vegetative cover types in the California Foothills, physiographic area 92. Forest coverages are taken from USFS FIA data, nonforest cover types are modified from USGS data. Water coverage is combined from both databases by adding USGS water coverage in the "nonforest" section of the USFS database.
Cover types

Area (ha)

Area (ac)

Percent of Total
Chaparral forest

480,620

1,187,612

14.96
Spruce-fir forest

14,612

36,106

0.45
Ponderosa pine forest

48,410

119,621

1.51
Mixed hardwood forest

663,126

1,638,586

20.64
Redwood forest

78,231

193,309

2.43
Douglas fir forest

29,523

72,952

0.92
Open oak, bluestem woodland

64,315

158,921

2.00
Wheat, irrigated agriculture, corn

18,290

45,196

0.57
Grama, bluestem grassland

10,736

26,528

0.33
Wheatgrass grassland

22,267

55,021

0.69
Annual grasses, manzanita

657,063

1,623,602

20.45
Pasture, hay, mixed crops

4,076

10,071

0.13
Sagebrush prairie

524,259

1,295,443

16.32
Greasewood brushland

145,926

360,582

4.54
Barren ground, sparse vegetation

2,485

6,141

0.08
Water

87,774

216,890

2.73
Urban

351,990

869,767

10.95
No data

9,642

23,826

0.30
 Totals

3,213,345

7,940,176

100