Modoc County occupies California’s far northeastern corner, and its maps look very different from those of a compact urban county. Alturas is the main road and settlement reference, while smaller communities are spread widely toward Canby and Adin in the west and southwest, Cedarville and Lake City in the east, and Fort Bidwell near the northeastern side. The county overview shows US 395, State Route 299, and other major roads, while the terrain-and-water map brings Goose Lake, the Alkali Lakes, the Pit River forks, and several reservoirs into focus. The WebP images in the article are quick previews; the download box below provides high-resolution JPG versions of all three supplied maps in one ZIP archive.
The easiest way to understand Modoc County is to avoid treating it as one continuous city area. Roads and place names cluster around Alturas, but Newell, Fort Bidwell, Eagleville, Lookout, and Adin are separated by long stretches of open land. The eastern side also has a strong lake-and-valley pattern that is not obvious from the road map alone. Using the three views together lets a reader move from roads and communities to the location of the principal city and then to the county’s lakes, river branches, reservoirs, and relief.
Table of Contents
Alturas and the US 395–SR 299 crossing provide the simplest starting point for the county
Alturas is the most useful anchor on the general county map. US 395 runs north and south through the Alturas area, while State Route 299 comes in from the west near Canby and continues east toward Cedarville. Likely appears to the south, and Adin and Lookout are farther southwest near the roads that approach the county from that direction. Newell sits well to the northwest, separated from the Alturas cluster, which immediately shows how much geographic space the county map has to cover.
The eastern group of communities has a different arrangement. Cedarville is a prominent place name east of Alturas, with Lake City and Fort Bidwell farther north and Eagleville to the south. California Pines is labeled closer to Alturas on the southwest side. These names help the map do more than identify one city: they show how settlement is distributed across several distant parts of the county. The overview is best used for regional orientation, not live traffic, turn-by-turn navigation, or an exhaustive list of local roads.
The shape of the county also matters when reading the road map. Alturas lies somewhat east of the county’s middle rather than at the center of a tight ring of towns. Reaching the northern, western, or far eastern communities therefore involves crossing a large amount of map space. A practical reading method is to locate Alturas first, follow US 395 north and south, then use SR 299 to compare the Canby side with the Cedarville side. For the far east, Cedarville becomes a useful intermediate reference for Lake City, Fort Bidwell, and Eagleville.
The city index singles out Alturas rather than presenting a dense network of incorporated cities
The supplied city map is unusually simple. It marks Alturas as the single ranked major city, with a number 1 marker on the map and a city index entry showing Alturas with the figure 2,681. That figure should be treated as a map reference rather than a permanently current population count; anyone who needs the latest population should consult current Census data. What matters most for this page is the cartographic message: Alturas is the one city emphasized on a very large county outline.
Because most secondary road and community labels have been removed, the city map makes Alturas easy to place at a glance. County names west of the Modoc boundary, including Siskiyou, Lassen, and Shasta, remain as orientation references, while blue stream lines still cross the county. This creates a much cleaner view than the full road map. For a classroom slide or a short regional introduction that only needs to answer “Where is the principal city?”, the city index is the most direct of the three supplied maps.
This city map does not draw connectors between several cities and it does not print straight-line distance values. It should not be used to estimate mileage to Cedarville, Adin, Fort Bidwell, or other communities. For those comparisons, return to the county overview for road context and use current navigation for real travel distance and time. The simplified city view is valuable precisely because it removes those details and keeps the reader focused on Alturas.
Goose Lake and the Alkali Lakes dominate the northeast while the Pit River forks cross the interior
The terrain-and-water map changes the visual hierarchy completely. Goose Lake is the largest named water body in the northeastern part of the map, and Upper Alkali Lake and Middle Alkali Lake form another long water feature farther south along the eastern side. Relief shading grows much rougher around the eastern margin than across much of the interior. This makes the contrast between large eastern lake basins and nearby mountain terrain easy to see even without a separate elevation layer.
Across the central and southern parts of Modoc County, the Pit River system becomes the main water reference. The map labels the Pit River, North Fork Pit River, and South Fork Pit River, allowing the reader to see that the drainage is divided into several branches rather than one single channel. The North Fork approaches the interior from the northeastern side, while the South Fork is shown farther south. Numerous smaller streams join the network, so areas that look open and sparsely settled on the city map appear much more detailed when the water layer is emphasized.
Several reservoirs and smaller named waters add another layer to the map. Clear Lake Reservoir is labeled in the northwest, Big Sage Reservoir near the interior, and Bayley Reservoir farther south. Egg Lake appears in the southwest, while Bayley Tank, Boles Creek, and Mill Creek are among the smaller named features. The result is a county water map that cannot be reduced to one river basin or one lake district. It is more useful to compare the Goose Lake–Alkali Lake side with the Pit River branches and then note the reservoirs scattered through the western and central parts.
Rough eastern and southwestern relief contrasts with broader interior surfaces
Shaded relief on the water map provides a general sense of terrain without turning the page into a technical elevation product. The eastern side near the Alkali Lakes shows strong ridges and valleys, and the southwest around the Pit River also appears more broken. By comparison, parts of the central and northern interior look broader and smoother, with small lakes and shallow drainage lines spread across larger open areas. This contrast helps explain why a road map alone does not capture the character of the county.
The shading should not be read as a measured elevation surface. No separate elevation map is included in this package, and the image does not provide survey-grade heights or slopes for specific sites. For engineering, construction, land surveying, or any task that depends on exact elevation, a current source such as the USGS 3D Elevation Program or a professional survey is required. Here, relief is best used to distinguish flatter areas from more rugged terrain and to see how water bodies sit beside those landforms.
Choose the road map for communities, the city index for Alturas, and the water map for lakes and river branches
A first-time reader can work through the set in a simple order. Start with the county overview and locate Alturas, US 395, and SR 299. Add Canby, Cedarville, Adin, Likely, Newell, and Fort Bidwell to understand how widely the communities are separated. Next, switch to the city index to see how strongly Alturas stands out when smaller settlement labels are removed. Finish with the terrain-and-water map to connect Goose Lake, the Alkali Lakes, the Pit River forks, and the reservoirs with the county’s relief.
The county overview is the best choice for documents that need roads and multiple place names. The city map is cleaner when only the location of Alturas needs to be emphasized. The terrain-and-water map is the useful option for explaining lakes, river branches, reservoirs, and general landform differences. The WebP images are optimized for on-page viewing, while the downloadable JPG files are better suited to printing, large presentation slides, or documents that need sharper output. None of these general-reference maps should replace legal boundary records, parcel maps, flood-risk products, live navigation, or professional survey data.
Frequently Asked Questions
Why does the city map show only Alturas?
The supplied city index identifies Alturas as the single ranked major city. Other communities such as Cedarville, Canby, Adin, Fort Bidwell, and Likely are available on the general county map instead. Use the city map for a clean view of the principal city and the overview when you need a broader set of place names.
Can Goose Lake and the Pit River be compared on the same map?
Yes. The terrain-and-water map places Goose Lake and the Upper and Middle Alkali Lakes in the east and northeast while also labeling the Pit River, North Fork Pit River, and South Fork Pit River across the interior and south. It also includes Clear Lake Reservoir, Big Sage Reservoir, Bayley Reservoir, and smaller water features.
Does the relief shading provide exact elevations?
No. The shading helps distinguish rougher mountains and valleys from broader, flatter-looking ground, but it does not supply measured elevation values or engineering-grade slope information. This package does not include a separate elevation map, so exact heights should be obtained from an authoritative elevation dataset such as USGS 3DEP.
Map File Information
The ZIP archive contains high-resolution JPG versions of the Modoc County overview map, Alturas city index map, and terrain-and-water map.
- Included Files: 3 JPG maps
Related Maps
Sources and reference links
- County of Modoc official website: official county services and government information centered in Alturas.
- US Forest Service – Raider Basin Research Natural Area: official background for the Warner Mountains and the natural area near Eagleville in Modoc County.
- U.S. Census Bureau TIGER/Line Shapefiles: authoritative geographic data for county boundaries, roads, and mapped places.
- USGS National Hydrography: official reference data for rivers, streams, lakes, and other hydrographic features.
- USGS 3D Elevation Program: authoritative elevation data for work that requires measured terrain heights rather than generalized shaded relief.
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.
