ELLIOTT ET AL.: THE CAVE FAUNA OF CALIFORNIA 
5 
Lassen 
Plumas 
Nevada- 
'oj Lake Tahoe 
Sutter, 
Placer 
El Dorado 
SolanoT 
Contra Costa San Jo'qO 
ian Francisco, 
Alameda 
CD 
Mariposa 
Madera 
Merced 
rlSanlBenitb, 
SanlLuis Obispo 
"Los Angeles] 
Orange 
SamDiego 
Mexico 
Baja California 
del Norte 
Matmm 
□ 
Oregon 
Caves Per County 
0 
1-5 
6-11 
12-50 
51-200 
201-500 
501-654 
Symbols 
X regional boundary 
• cave 
groundwater 
A lava tube 
■ mine 
3“ sea cave count 
Nevada 
155 
Sonora 
Figure 1. Map of 12 California regions with density of caves per county represented by color, and 500 representative 
localities of all types. The Central Valley (San Joaquin and Sacramento Valleys) has very few caves. In this paper the three 
coastal regions are treated in tabulations as one region, Coast Ranges. See legend for regions, counties, caves, groundwa¬ 
ter sampling sites, lava tubes, mines, and numbers of sea caves in coastal counties and islands. 
