| Locat Sections Boundary Descriptions |
| Northern
Local Sections |
| CENTRAL SAN JOAQUIN |
Fresno, Kings, Madera and Tulare
Counties, in the Central Valley Region of the SWRCB
regions. |
MONTEREY BAY
|
Monterey, Santa Cruz, San Benito
Counties, plus the portion of Santa Clara County
south of Coyote. |
| NORTH COAST |
Del Norte, Humboldt, Trinity
Counties, plus the portions of Siskiyou county west
of the north-south line from the northern most point
of Trinity County and at leas 5 miles west of Highway
I-5, plus the portion of Mendocino County north
of Highway 20. |
NORTHERN SAN JOAQUIN
|
Amador, Calaveras, Mariposa,
Merced, San Joaquin, Stanislaus, Tuolumne Counties.
|
| NORTH SACRAMENTO VALLEY |
Butte, Colusa, Glenn, Lassen,
Modoc, Plumas, Shasta, Sierra, Sutter, Tehama, Yuba,
Yolo counties, plus the portion of Siskiyou County
east of the north-south line from the northern most
point of Trinity County and at least 5 miles west
of Highway I-5, and the portion of Nevada County
in the Central Valley Region of the SWRCB regions.
|
| REDWOOD EMPIRE |
Lake, Marin, Napa, Sonoma Counties, plus the portions of Mendocino County south of Highway 20, and that portion of Solano County west of Highway 680 and north of Highway 12 and those areas south of Highway 12 that are within the incorporated areas of the City of Fairfield and Suisun City. |
| SACRAMENTO AREA |
Sacramento County, plus the portions of El Dorado and Placer Counties in the Central Valley Regin of the SWRCB regions and the portion of Solano County south of Highway 12 and east of Highway 680, excluding the incorprated areas of the City of Fairfield and Suisun City south of Highway 12. |
| SANTA CLARA VALLEY |
The portion of Santa Clara County
north of Coyote and the portion of San Mateo County
south of an east-west line from the Pacific Ocean
to the Alameda County boundary just north of Millbrae.
|
| SAN FRANCISCO BAY |
Alameda, Contra Costa and San
Francisco Counties, plus the portion of San Mateo
County north of the east-west line from the Pacific
ocean to the Alameda County boundary. |
| SIERRA |
Alpine County, plus the portions
of El Dorado, Mono, Nevada, and Placer Counties
in the Northern Lahontan Region (north of Highway
167) of the SWRCB regions. |
 |
|
| Southern
Local Sections |
| COLORADO RIVER BASIN |
Imperial County plus portions
of San Diego, Riverside and San Bernardino Counties.
North boundary is Banning to Yucca Valley to Twentynine
Palms to Amboy to Needles. East boundary is Needles
to Yuma. South boundary is Yuma to San Diego county
line. West boundary is San Diego County line to
Highway 52 to Highway 79 to Highway 371 to Highway
74 to Highway 243 to Banning. (Anza Borrego area,
including Borrego Springs, is within the CORBS boundaries.)
|
DESERT AND MOUNTAIN
|
Inyo County plus portions of
San Bernardino, and Mono Counties in the Southern
Lahontan Region of the SWRCB. (Big Bear, Running
Springs, Lake Arrowhead, Crestline, Banning and
Beaumont are within the Desert and Mountain Boundaries.)
|
| GOLDEN EMPIRE |
Kern County, Los Angeles County
north of Highway 126 and 14, including Palmdale
and Lancaster, and the area east of N6 to Big Pines
at the County line. |
| LOS ANGELES BASIN |
Los Angeles County lines, to
the Northeast boundary at Highways 126 and 14 and
west of N6. |
| SANTA ANA RIVER BASIN |
Orange County plus portions of
San Diego and Riverside counties. North boundary
is Los Angeles County line to Highway 10 to Highway
38. East boundary is from Highway 38 through Yucaipa
to Beaumont to Highway 40 to Highway 243 to Highway
74 to Hemet to Highway R3 to San Diego County line.
South boundary is Orange County line. (San Bernardino,
Redlands, Yucaipa, San Jacinto, Idlywild, and Hemet
are with the SARBS boundaries. |
| SAN DIEGO |
Portions of San Diego County.
North boundary is San Diego County line south of
San Clemente, east to Highway 79. East boundary
is Highway 79 to Highway 52 to San Diego County
line at Coyote Wells and follows County line to
U.S./Mexico Border. (Anzo Borrego area, including
Borrego Springs are not within San Diego Boundaries.)
|
| TRI-COUNTIES |
San Luis Obispo, Santa Barbara
and Ventura Counties. |
|
|
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