| Tionesta | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | California#USA |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in California |
| Pushpin Image: | California Locator Map with US.PNG |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | Modoc County |
| Coordinates: | 41.6461°N -121.3281°W |
| Elevation M: | 1304 |
| Elevation Ft: | 4278 |
Tionesta is an unincorporated community in Modoc County, California. It is located on the former Great Northern Railway Bieber Line, 2miles northwest of Timber Mountain, at an elevation of 4278 feet (1304 m).
Tionesta has feature ID 1660004 in the U.S. Geological Survey, National Geographic Names database. The latitude and longitude for the development are 41.6461°N -121.3281°W on the Perez 7.5-minute quadrangle. The area is part of ZIP Code 96134, which includes other nearby locales such as Tulelake, Newell, and Lava Beds National Monument, and area code 530. The BNSF Railway Gateway Subdivision track runs through this area.
Tionesta is the southern gateway to Lava Beds National Monument. Nearby is the Eagle's Nest R.V. Park for motor home, trailer and tent camping. Next door is the Hawks Nest Cabins & RV Park. Tionesta also provides access to the Medicine Lakes highlands and Glass Mountain. Numerous outdoor activities are available, including camping, hiking, exploring the area and the over 800 caves at Lava Beds. Tule Lake Segregation Center and Captain Jack's Stronghold are two of the many historical attractions also to be found in the surrounding area.
Modoc County Air Pollution Control District records show a facility named PG&E Tionesta Compressor Station, (permit #97-01) located at 41.6492°N -121.3183°W on State Route 139. In public filings, the facility is also identified as Compressor Station Number 14B. This is a major geographic feature of the area.
The name, which comes from the Tionesta Forest in Pennsylvania, was bestowed by a lumber company executive.
The Tionesta post office, located 2miles east of Tionesta, operated from 1939 to 1955.
In the state legislature, Tionesta is in the 1st Senate District, represented by Republican Dave Cox, and in the 2nd Assembly District, represented by Republican Jim Nielsen.
Federally, Tionesta is in .[1]