Plumas County is a mountain county in northeastern California where roads and communities are separated by long river valleys, forested ridges, lakes, and reservoirs. The county map shows places such as Portola, Greenville, East Quincy, Graeagle, and Beckwourth together with State Routes 70, 89, 36, 147, 284, and 49. The terrain-and-water map adds a very different layer, tracing the Feather River forks and showing Lake Almanor, Bucks Lake, Lake Davis, Frenchman Lake, and several reservoirs. High-resolution JPG versions of the supplied maps are available in the download box below.
This is not a county where the main story is a chain of large cities. The ranked city map contains only one major city, Portola, so the most useful way to read Plumas County is to focus on the relationship between small communities, mountain highways, river canyons, and scattered water bodies. The three supplied maps complement one another without requiring extra city or distance information that is not actually shown.
Table of Contents
State Route 70 ties together the eastern half of the county
State Route 70 is one of the clearest lines to follow on the county map. From the East Quincy area it runs east through Cromberg and the Mohawk Valley area toward Portola, then continues toward Beckwourth and the eastern county line. Because the surrounding terrain is mountainous, the highway bends with the valleys rather than following a straight grid. That makes it a useful reference for understanding how the eastern communities relate to one another.
State Route 89 forms another important link, running from the Greenville area toward East Quincy and then south through the mountain region. Farther northwest, State Routes 36 and 147 appear near the Lake Almanor side of the county, while Routes 284 and 49 are visible near the eastern and southeastern edges. The road pattern becomes much easier to understand when compared with the terrain map, because many of the curves follow lower ground between ridges.
Portola is the only ranked major city on the supplied city map
The city map is unusually simple compared with more urban California counties. Its city index lists Portola alone, with the map marker placed in the southeastern part of Plumas County. That means the map should not be treated as a six-city or ten-city comparison. It is designed to show the one ranked major city provided by the dataset and its position inside the county.
Portola lies along the SR 70 corridor, east of Mohawk Vista and Graeagle and west of Beckwourth and the Chilcoot-Vinton area shown on the general map. East Quincy and Greenville are visible on the county map but are not presented as ranked cities in the city index. Reading the two maps together preserves that distinction and avoids adding rankings that the supplied material does not support.
The Feather River forks organize much of the mountain landscape
The terrain-and-water map shifts attention away from roads and toward drainage. In the northwest, the North Fork Feather River is labeled near the Lake Almanor area. Another North Fork Feather River segment is prominent through the west-central mountain valleys, while the Middle Fork Feather River crosses the southern and southeastern part of the county. These channels explain why so many roads and communities sit in narrow valleys instead of spreading evenly across the county.
Last Chance Creek is labeled in the northeastern interior, and Indian Creek appears farther west of it. Many smaller tributaries branch through the shaded relief and join larger channels. The map does not present these streams as engineering measurements or flood zones; it is a geographic reference that makes the connection between valleys, streams, and the Feather River system visible.
Large lakes and reservoirs are spread across several parts of Plumas County
Lake Almanor is the most prominent water body on the northwestern side of the map. South of it, Butt Valley Reservoir appears in a narrower mountain setting. Round Valley Reservoir is labeled farther south, while Bucks Lake and Grizzly Forebay sit in the southwestern interior. Their locations show that major water bodies are not concentrated in a single basin.
Farther east, Lake Davis stands out north of the Middle Fork Feather River corridor, and Frenchman Lake is close to the eastern side of the county. Antelope Valley Reservoir appears in the north-central to northeastern mountain area. These features are useful landmarks when comparing different portions of the county, but the map should not be used to infer current reservoir levels, dam operations, boating conditions, or flood risk.
Mountain valleys explain the winding highway pattern
Placing the county map beside the terrain map helps explain why the road network looks so different from a flat agricultural or suburban county. SR 70 bends through the East Quincy, Cromberg, Mohawk Valley, and Portola corridor because the route follows lower terrain between ridges. SR 89 also follows a mountain passage between Greenville and the central county rather than cutting directly across high ground.
This matters when using the map for regional orientation. Two places may look relatively close in straight-line terms while the practical road route has to curve through a valley or around mountain terrain. The maps are useful for seeing that relationship, but they are not turn-by-turn navigation products and do not show seasonal closures, snow conditions, or current travel times.
Choosing between the county, city, and water maps
Use the county map first when you need community names, highways, and the overall boundary in one view. It is the best choice for locating Greenville, East Quincy, Portola, Graeagle, Beckwourth, and the principal state routes. The city map is intentionally much simpler and is useful when you specifically want to see where Portola falls within the county.
The terrain-and-water map is the stronger reference for the Feather River forks and the county’s many lakes and reservoirs. A useful reading sequence is to locate a community on the county map and then find the same area on the water map. Around Portola, for example, you can compare SR 70 with Lake Davis, Frenchman Lake, and the Middle Fork Feather River. Around the northwestern side, Lake Almanor and the North Fork Feather River provide the main geographic anchors.
Frequently Asked Questions
Why does the city map show only Portola?
The supplied city map ranks only one major city for Plumas County: Portola. Other named communities appear on the general county map, but they are not presented as ranked cities in this particular city index.
Which map is best for Lake Almanor and the Feather River forks?
The terrain-and-water map is the best choice. It labels the North Fork and Middle Fork Feather River and shows Lake Almanor, Bucks Lake, Lake Davis, Frenchman Lake, several reservoirs, and the surrounding mountain relief.
Can the downloaded JPG maps be printed at a larger size?
Yes. The ZIP contains high-resolution JPG files corresponding to the maps on this page, so they are suitable for larger prints and educational use. They remain general reference maps rather than survey, legal-boundary, flood, or real-time navigation products.
Map File Information
Download the high-resolution JPG versions of the Plumas County county, city, and terrain-and-water maps in one ZIP archive.
- Included Files: Use only the versions confirmed in the article and supplied images
- File Type: Use the confirmed download contents
- Intended Use: Printing, education, presentations, and map-based projects
Related Maps
Sources and references
- Plumas County official website
- Visit Plumas County regional guide
- U.S. Census Bureau TIGER/Line Shapefiles
- USGS National Hydrography
- USGS 3D Elevation Program
Green Map creates custom-edited map images using open geographic data sources such as geoBoundaries, Natural Earth, OpenStreetMap, and government open data.
These maps are edited visual materials, not raw data files, and are provided for education, documents, presentations, and graphic reference.
