Download the high-resolution JPG originals for this Prowers County Map together in the ZIP below. The page shows Lamar, Granada, Holly, Wiley, and Hartman, the U.S. 50 corridor across southeastern Colorado, the Arkansas River and its smaller tributaries, and an elevation range of about 1,022 to 1,416 meters. The four maps are designed to answer different practical questions without turning the page into a GIS report: where the main communities sit, how the county’s roads connect them, where the watercourses cross the plains, and how the broad river valley differs from higher ground to the south and west.
The official Prowers County website lists Lamar, Granada, Holly, Hartman, and Wiley among the county’s communities, and those same places stand out on the supplied maps. Lamar is the clearest reference point. Granada and Holly continue eastward along the Arkansas River and U.S. 50, while Wiley lies west of Lamar and Hartman sits north of Granada. Much of the southern half of the county has few town labels, so the map reads as a settled river-and-highway corridor along the north with a much broader rural plain extending south.
Table of Contents
Lamar anchors the U.S. 50 corridor while Granada and Holly extend the settled strip eastward
The county map is easiest to understand by starting at Lamar. The Prowers County Courthouse label appears close to town, and U.S. 50 runs east from the Lamar area toward Granada and Holly. Wiley is shown west of Lamar, while Hartman lies north of Granada. Because most of the named communities and the most prominent east-west road are concentrated in this northern band, the map makes the Arkansas River corridor the natural organizing line for the county.
South of that corridor, the visual pattern changes. U.S. 287 and U.S. 385 enter the county from the south, and additional state routes appear along the east and west sides, but the map carries far fewer town labels across the broad interior. That difference is useful when planning a countywide overview: the north contains the most obvious chain of communities, while long stretches of the southern plains are defined more by roads, creeks, and county boundaries than by large settlements.
This map is best for county orientation rather than turn-by-turn navigation. It helps answer simple questions such as which communities sit along the same east-west corridor, where the long north-south routes cross the county, and how far the road network extends through areas with few named towns. For current driving conditions, closures, or exact local access, a current road service should be checked separately.
The city map strips away road detail and makes the northern settlement pattern easier to compare
The city map highlights five places in a simple index: Lamar, Holly, Granada, Wiley, and Hartman. The numbers next to them are part of the supplied city index and should not be treated as a substitute for current Census statistics. What matters most for this map is placement. Lamar, Granada, and Holly form a clear west-to-east sequence, Wiley sits farther west, and Hartman is offset north of the main river corridor.
That layout shows why a county like Prowers is easier to understand through relative position than through a long list of place names. The major communities occupy only a small part of the county’s full north-south extent. When the city map is compared with the county map, it becomes clear that settlement is concentrated near the Arkansas River and U.S. 50 while the southern plain contains far fewer prominent town labels.
The official county website lists the same five communities, which makes the map especially useful as a quick visual companion to the county’s own community list. It also prevents a common misunderstanding: Prowers County is not filled evenly with towns from north to south. The main named settlements cluster near the northern river-and-highway band, while the southern part of the county is much more sparsely labeled.
The Arkansas River, canals, and south-side creeks reveal how water crosses an otherwise broad dry plain
The water and terrain map gives the Arkansas River the strongest visual presence. It crosses the northern part of the county from west to east, close to the same corridor that contains Lamar, Granada, and Holly. Several canals are labeled near the river, including Fort Bent Canal, Lamar Canal, and Amity Canal. King Reservoir and Thurston Reservoir appear in the northwestern part of the map, reinforcing the concentration of larger water features near the northern agricultural corridor.
Farther south, a different drainage pattern appears. Clay Creek, Wolf Creek, Granada Creek, Rule Creek, Two Butte Creek, North Butte Creek, and smaller channels cut across the plain in separate valleys. They do not form one single parallel system. Instead, the water map shows a broad network of shallow drainage lines that divide the southern landscape into low ridges and creek bottoms before water eventually reaches larger downstream systems.
This is a location reference, not a flood map, water-rights map, depth chart, or navigation product. It is useful for seeing where rivers, canals, reservoirs, and creeks sit relative to towns and terrain. Flood risk, irrigation allocations, channel conditions, or legal water information should come from the responsible agencies and current official sources.
An elevation range of roughly 1,022–1,416 meters separates the low Arkansas River valley from higher southwestern ground
The elevation map gives Prowers County an actual mapped range of about 1,022 to 1,416 meters, with a mean near 1,161 meters. The Arkansas River corridor forms a broad, darker green band across the northern part of the county, showing that it lies lower than much of the surrounding plain. The southwestern corner shifts toward yellow and brown, marking the county’s higher ground even though the landscape remains a plains environment rather than a mountain county.
That gentle but meaningful change in height helps explain the creek pattern. Many of the smaller southern channels occupy shallow valleys cut into higher rolling terrain, while the Arkansas River follows the county’s broadest low corridor. Because the difference between the county’s lowest and highest mapped areas is close to 400 meters, relief that may look subtle on a road map becomes much easier to recognize on the elevation layer.
The elevation layer is intended for countywide comparison. It is not survey-grade or engineering-grade measurement and should not be used to establish an exact building-site elevation, road grade, drainage design, or property-level height. Those tasks require USGS source data or professional survey information. Here, the map works best as a companion to the water layer and helps explain why the main river corridor is visibly lower than much of the county.
Granada also adds an important historical reference through Amache National Historic Site
Granada is more than a place label on the county map. The National Park Service manages Amache National Historic Site near Granada, preserving the history of the Granada Relocation Center where Japanese Americans were unjustly incarcerated during World War II. NPS visitor information places current park operations in the Amache Museum in Granada and provides separate directions and site guidance.
The county maps on this page do not show the detailed boundary or visitor routes for Amache, so they should not replace the NPS site map. They do, however, provide useful regional context. Seeing Granada between Lamar and Holly along the same northern transportation corridor makes it easier to understand where the historic site fits within Prowers County as a whole.
Choose the road, city, water, or elevation view for the question you need to answer
Use the county map when you want Lamar, Granada, Holly, Wiley, Hartman, major highways, and the county boundary in one frame. Use the city map when relative settlement positions matter more than road detail. The water map is better for locating the Arkansas River, canals, reservoirs, and named creeks, while the elevation map is the clearest choice for comparing the low river corridor with higher southern and southwestern plains.
The WebP images are optimized for quick viewing on the page. For larger inspection, printing, or offline reference, the high-resolution JPG originals are more useful. The ZIP below contains the county map, city map, terrain-and-water map, and elevation map as full-size JPG files. Each JPG measures 2,572 × 3,638 pixels.
Frequently Asked Questions
Which map is best for comparing Lamar, Granada, and Holly?
The main county map is the best starting point because it shows all three communities together with U.S. 50, the Arkansas River corridor, and the county boundary. The city map is useful as a second view when you want to compare only the relative placement of the named communities without the full road network.
Where can I see the Arkansas River and the southern creeks on one map?
The terrain-and-water map shows the Arkansas River together with canals, reservoirs, Clay Creek, Wolf Creek, Granada Creek, Two Butte Creek, and other named channels. It is a location reference only and should not be used as a flood-risk, depth, legal-water-rights, or navigation map.
Can the 1,022–1,416 meter elevation range be used for surveying?
No. The elevation map is meant to compare broad countywide height differences, especially the low Arkansas River corridor and the higher southwestern plains. Exact construction, road design, drainage, or property-level elevations require USGS source data or professional surveying.
Map File Information
The ZIP contains the high-resolution JPG originals for the Prowers County map, city map, terrain-and-water map, and elevation map shown on this page.
- Included Files: 4 high-resolution JPG maps
- Printable Size: 2,572 × 3,638 pixels per JPG
Related Maps
Sources and references
- Official Prowers County website – official county information and the community list for Lamar, Granada, Holly, Hartman, and Wiley.
- National Park Service, Amache National Historic Site – official history and visitor information for the Amache site near Granada.
- U.S. Census Bureau TIGER/Line Shapefiles – official boundary, road, and place reference data.
- USGS National Hydrography – official reference data for rivers, creeks, reservoirs, and other water features.
- USGS 3D Elevation Program – official source information for elevation and terrain data.
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.
