EMFAC Geographical Areas#
EMFAC uses various geographical areas for modeling and reporting purposes. These include Sub-Areas, Counties, Air Basins, Air Districts, and Metropolitan Planning Organizations (MPO). Sub-Areas are defined by the combination of the boundaries of counties, air basins, and air districts. Air Basins are defined as areas with similar meteorological and geographic conditions for the purpose of managing the air resources of the State.
Table 3 defines these geographical areas and their abbreviations as used in EMFAC. The MPO column in Table 3 lists the Metropolitan Planning Organizations (MPO) associated with each geographical area in California:
StanCOG: Stanislaus Council of Governments
TMPO: Tahoe Metropolitan Planning Organization (TMPO) and Tahoe Regional Planning Agency (TRPA)
Sub-Area |
County |
Air Basin |
Air District |
MPO |
|---|---|---|---|---|
Alameda (SF) |
San Francisco Bay Area |
MTC |
||
Alpine (GBV) |
Great Basin Valleys |
|||
Amador (MC) |
Mountain Counties |
|||
Butte (SV) |
Sacramento Valley |
BCAG |
||
Calaveras (MC) |
Mountain Counties |
|||
Colusa (SV) |
Sacramento Valley |
|||
Contra Costa (SF) |
San Francisco Bay Area |
MTC |
||
Del Norte (NC) |
North Coast |
|||
El Dorado (LT) |
Lake Tahoe |
TMPO |
||
El Dorado (MC) |
Mountain Counties |
SACOG |
||
Fresno (SJV) |
San Joaquin Valley |
FCOG |
||
Glenn (SV) |
Sacramento Valley |
|||
Humboldt (NC) |
North Coast |
|||
Imperial (SS) |
Salton Sea |
SCAG |
||
Inyo (GBV) |
Great Basin Valleys |
|||
Kern (MD) |
Mojave Desert |
KCOG |
||
Kern (SJV) |
San Joaquin Valley |
KCOG |
||
Kings (SJV) |
San Joaquin Valley |
KCAG |
||
Lake (LC) |
Lake County |
|||
Lassen (NEP) |
Northeast Plateau |
|||
Los Angeles (MD) |
Mojave Desert |
SCAG |
||
Los Angeles (SC) |
South Coast |
SCAG |
||
Madera (SJV) |
San Joaquin Valley |
MCTC |
||
Marin (SF) |
San Francisco Bay Area |
MTC |
||
Mariposa (MC) |
Mountain Counties |
|||
Mendocino (NC) |
North Coast |
|||
Merced (SJV) |
San Joaquin Valley |
MCAG |
||
Modoc (NEP) |
Northeast Plateau |
|||
Mono (GBV) |
Great Basin Valleys |
|||
Monterey (NCC) |
North Central Coast |
AMBAG |
||
Napa (SF) |
San Francisco Bay Area |
MTC |
||
Nevada (MC) |
Mountain Counties |
|||
Orange (SC) |
South Coast |
SCAG |
||
Placer (LT) |
Lake Tahoe |
TMPO |
||
Placer (MC) |
Mountain Counties |
SACOG |
||
Placer (SV) |
Sacramento Valley |
SACOG |
||
Plumas (MC) |
Mountain Counties |
|||
Riverside (MD/MDAQMD) |
Mojave Desert |
SCAG |
||
Riverside (MD/SCAQMD) |
Mojave Desert |
SCAG |
||
Riverside (SC) |
South Coast |
SCAG |
||
Riverside (SS) |
Salton Sea |
SCAG |
||
Sacramento (SV) |
Sacramento Valley |
SACOG |
||
San Benito (NCC) |
North Central Coast |
AMBAG |
||
San Bernardino (MD) |
Mojave Desert |
SCAG |
||
San Bernardino (SC) |
South Coast |
SCAG |
||
San Diego (SD) |
San Diego |
SANDAG |
||
San Francisco (SF) |
San Francisco Bay Area |
MTC |
||
San Joaquin (SJV) |
San Joaquin Valley |
SJCOG |
||
San Luis Obispo (SCC) |
South Central Coast |
SLOCOG |
||
San Mateo (SF) |
San Francisco Bay Area |
MTC |
||
Santa Barbara (SCC) |
South Central Coast |
SBCAG |
||
Santa Clara (SF) |
San Francisco Bay Area |
MTC |
||
Santa Cruz (NCC) |
North Central Coast |
AMBAG |
||
Shasta (SV) |
Sacramento Valley |
SRTA |
||
Sierra (MC) |
Mountain Counties |
|||
Siskiyou (NEP) |
Northeast Plateau |
|||
Solano (SF) |
San Francisco Bay Area |
MTC |
||
Solano (SV) |
Sacramento Valley |
MTC |
||
Sonoma (NC) |
North Coast |
MTC |
||
Sonoma (SF) |
San Francisco Bay Area |
MTC |
||
Stanislaus (SJV) |
San Joaquin Valley |
StanCOG |
||
Sutter (SV) |
Sacramento Valley |
SACOG |
||
Tehama (SV) |
Sacramento Valley |
|||
Trinity (NC) |
North Coast |
|||
Tulare (SJV) |
San Joaquin Valley |
TCAG |
||
Tuolumne (MC) |
Mountain Counties |
|||
Ventura (SCC) |
South Central Coast |
SCAG |
||
Yolo (SV) |
Sacramento Valley |
SACOG |
||
Yuba (SV) |
Sacramento Valley |
SACOG |