Region
California
United States
4
Central Valley (Valley)
2
Livermore
2
Sierra Nevada (Calif. and Nev.)
2
Alabama
1
Alaska
1
Central Valley
1
Channel Islands National Marine Sanctuary
1
Colorado
1
Inland Empire (Calif.)
1
Los Angeles
1
Louisiana
1
Mendocino National Forest
1
Mississippi
1
Mojave Desert
1
Mojave National Preserve (Calif.)
1
Oakland
1
Ontario
1
Pennsylvania
1
Philadelphia
1
Presidio of San Francisco
1
Sacramento County
1
San Francisco
1
San Francisco Bay
1
Texas
1
Yosemite National Park
1