California Cultural Features: Tunnels
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| Name | County | USGS Topo Map |
|---|---|---|
| Alameda Diversion Tunnel | Alameda | Calaveras Reservoir |
| Angeles Tunnel | Los Angeles | Liebre Mountain |
| Aqueduct Tunnel | Los Angeles | Green Valley |
| Balch Tunnel | Fresno | Patterson Mountain |
| Blue Cut | Placer | Colfax |
| Bowman Tunnel | Nevada | Graniteville |
| Brown Adit | Tuolumne | Chinese Camp |
| Burro Schmidts Tunnel | Kern | Garlock |
| Butt Valley Tunnel | Plumas | Almanor |
| Cajalco Tunnel | Riverside | Lake Mathews |
| Caldecott Tunnel | Alameda | Oakland East |
| Cape Horn Tunnel | Stanislaus | Knights Ferry |
| Cape Horn Tunnel | San Diego | El Cajon Mountain |
| Carley V Porter Tunnel | Kern | La Liebre Ranch |
| Castaic Tunnel Number One | Los Angeles | Warm Springs Mountain |
| Chilcoot Tunnel | Plumas | Beckwourth Pass |
| Clara Tunnel | Placer | Westville |
| Claremont Tunnel | Alameda | Oakland East |
| Claremont Water Tunnel | Contra Costa | Briones Valley |
| Clark Tunnel | Placer | Rocklin |
| Clear Creek Tunnel | Nevada | Graniteville |
| Clear Creek Tunnel | Trinity | Lewiston |
| Coachella Tunnels | Riverside | Seven Palms Valley |
| Coal Mine Tunnels | Contra Costa | Antioch South |
| Colgate Tunnel | Yuba | French Corral |
| Colorado River Tunnel | San Bernardino | Cerbat |
| Copper Basin Tunnel | San Bernardino | Gene Wash |
| Cottonwood Tunnel | Riverside | Cottonwood Basin |
| Coxcomb Tunnel | Riverside | Coxcomb Mountains |
| Cresta Tunnel | Butte | Pulga |
| Donnell Tunnel | Tuolumne | Donnell Lake |
| Doulton Tunnel | Santa Barbara | Carpinteria |
| Dutch Flat Tunnel | Placer | Dutch Flat |
| East Eagle Mountain Tunnel | Riverside | Victory Pass |
| Electra Tunnel | Amador | West Point |
| Elizabeth Tunnel | Los Angeles | Lake Hughes |
| Eureka Tunnel | Plumas | Johnsville |
| Forbestown Tunnel | Butte | Forbestown |
| Grizzly Dome Tunnel | Plumas | Soapstone Hill |
| Haas Tunnel | Fresno | Patterson Mountain |
| Hacienda Tunnel | Santa Clara | Santa Teresa Hills |
| Hayfield Tunnel Number One | Riverside | Hayfield |
| Hayfield Tunnel Number Two | Riverside | Hayfield |
| Iron Mountain Tunnel | San Bernardino | Iron Mountains |
| Jackknife Tunnel | Mendocino | McGuire Ridge |
| Kelly Ridge | Butte | Oroville Dam |
| Lafayette Water Tunnel | Contra Costa | Briones Valley |
| Lilac Tunnel | San Diego | Pala |
| Mammoth Tunnel | Plumas | Johnsville |
| Massa Tunnel | Amador | Jackson |
| Mecca Pass Tunnels | Riverside | Cottonwood Basin |
| Milton-Bowman Tunnel | Nevada | English Mountain |
| Miners Ranch Tunnel | Butte | Oroville Dam |
| Mono Craters Tunnel | Mono | June Lake |
| Mud Tunnel | Trinity | Rush Creek Lakes |
| Mueller Tunnel | Los Angeles | Mount Wilson |
| Newhall Tunnel | Los Angeles | Oat Mountain |
| North Portal | Santa Barbara | Carpinteria |
| North Portal | Santa Barbara | Little Pine Mountain |
| Oat Hills Tunnel | San Diego | Valley Center |
| Osborne Tunnel | Placer | Westville |
| Pacific Tunnel | Los Angeles | Oat Mountain |
| Panther Portal | Amador | Garnet Hill |
| Pardee Tunnel | Calaveras | Valley Springs |
| Pilarcitos Tunnel | San Mateo | Montara Mountain |
| Pine Mountain Tunnel | Marin | Bolinas |
| Poe Tunnel | Butte | Pulga |
| Posey Tube | Alameda | Oakland West |
| Pulgas Tunnel | San Mateo | Woodside |
| Randolph Collier Tunnel | Del Norte | Broken Rib Mountain |
| Rapid Transit Trans-Bay Tube | San Francisco | Oakland West |
| Rapid Transit Tunnel | Alameda | Oakland East |
| Red Mountain Tunnel | San Diego | Valley Center |
| Robert Levy Tunnel | San Francisco | San Francisco North |
| San Leandro Tunnel | Alameda | Oakland East |
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