| ACEC | Area of Critical Environmental Concern |
| ADA | Americans with Disabilities Act |
| APE | Area of Potential Effects |
| AUM | animal unit month |
| BIA | U.S. Bureau of Indian Affairs |
| BLM | U.S. Bureau of Land Management |
| BOR | U.S. Bureau of Reclamation |
| BPV | beneficial public value |
| CALFED | CALFED Bay-Delta Program |
| CalTrans | California Department of Transportation |
| CalTrout | California Trout, Inc. |
| Cal Water | California Water Services Company |
| CDF | California Department of Forestry and Fire Protection |
| cfs | cubic feet per second |
| CNDDB | California Natural Diversity Database |
| CNPS | California Native Plant Society |
| CPNM | Carrizo Plain National Monument |
| CRMP | Cultural Resources Management Plan |
| CWA | California Waterfowl Association |
| DFG | California Department of Fish and Game |
| DMA | Dyer Mountain Associates |
| DOD | U.S. Department of Defense |
| DPR | California Department of Parks and Recreation |
| DUA | day use area |
| DWR | California Department of Water Resources |
| EA | Environmental Assessment |
| EIR | Environmental Impact Report |
| EIS | Environmental Impact Statement |
| EPA | Environmental Protection Agency |
| ERC | Ecological Resources Committee |
| ESA | Endangered Species Act |
| FERC | Federal Energy Regulatory Commission |
| FOBCRA | Forks of Butte Creek Recreation Area |
| FOTR | Friends of the River |
| FRCRM | Feather River Coordinated Resource Management (Group) |
| FS | Forest Service (as in Forest Service Road) |
| GIS | geographic information system |
| HPMP | Historic Properties Management Plan or Heritage Properties Management Plan |
| HRMP | Heritage Resources Management Plan |
| KR1 | Kern River 1 |
| kV | kilovolt |
| LART | Lake Almanor Recreation Trail |
| LCP | Land Conservation Plan |
| LDS | Church of Jesus Christ of Latter Day Saints |
| LOSRA | Lake Oroville State Recreation Area |
| LSR | Late Successional Reserve |
| MFSR | Middle Fork Stanislaus River |
| MID | Merced Irrigation District |
| MSMP | McArthur Swamp Management Plan |
| MW | megawatt |
| NFMF | North Fork of the Middle Fork |
| NFS | National Forest System |
| NGO | nongovernmental organization |
| NID | Nevada Irrigation District |
| NOAA | National Oceanic and Atmospheric Administration |
| NPS | U.S. National Park Service |
| NRHP | National Register of Historic Places |
| OHV | off-highway vehicle |
| PAC | Protected Activity Center |
| PAOT | persons at one time |
| PG&E | Pacific Gas and Electric Company |
| PSEA | Pacific Service Employees Association |
| RMP | Recreation Management Plan |
| RV | recreational vehicle |
| SFAR | South Fork American River |
| SFREC | Sierra Foothill Research and Extension Center |
| SHPO | State Historic Preservation Office |
| SMUD | Sacramento Municipal Utility District |
| SNF | Sierra National Forest or Sequoia National Forest |
| Stewardship Council | Pacific Forest and Watershed Lands Stewardship Council |
| TEK | Traditional Ecological Knowledge |
| THP | Timber Harvesting Plan |
| TMU | Timber Management Unit |
| TNC | The Nature Conservancy |
| TUD | Tuolumne Utilities District |
| UARP | Upper American River FERC Project |
| UMRWA | Upper Mokelumne River Watershed Authority |
| UNFFR | Upper North Fork Feather River |
| USACE | U.S. Army Corps of Engineers |
| USFS | U.S. Forest Service |
| USFWS | U.S. Fish and Wildlife Service |
| WCB | Wildlife Conservation Board |
| WHIP | Wildlife Habitat Improvement Program |
| YCWA | Yuba County Water Agency |
| YMCA | Young Mens Christian Association |