GMU 121 GMU 121 — Cheyenne/Lincoln/Kiowa Co.
Big open pronghorn country on private ranchland
Eastern Colorado plains — Cheyenne/Lincoln/Kiowa shortgrass · Last reviewed 2026-07-12
Area
1,052
sq mi
Public land
2%
approx.
Elevation
4,000–4,900
feet
Motorized
extensive
access
Overview
GMU 121 is classic high-plains shortgrass prairie straddling Cheyenne, Lincoln and Kiowa counties around Kit Carson and the Big Sandy and Rush Creek drainages. It is pronghorn-first country, with a modest but real mule deer resource in the creek bottoms and cultivated edges, and only a token, incidental elk presence. The unit is dominated by large private cattle ranches and dryland farms, so access — not animals — is the limiting factor.
Terrain
Gently rolling to flat shortgrass plains cut by shallow, mostly ephemeral creek drainages (Big Sandy Creek, Rush Creek). Long sightlines and few natural barriers.
Cover: Blue grama and buffalograss shortgrass prairie, sand sagebrush pockets, yucca and cactus, cottonwood/tamarisk in the creek bottoms, and dryland wheat and CRP fields.
Landmarks: Big Sandy Creek · Rush Creek · Town of Kit Carson · US 40 / US 287 corridor
Access
This unit is overwhelmingly private ranch and farm ground. There is very little federal public land. Colorado State Trust Lands are scattered through the checkerboard but are NOT open to hunting unless enrolled in CPW's Public Access Program (formerly Walk-In Access) — verify each parcel on the CPW Hunting Atlas before planning to hunt it. Realistic access is through landowner permission, leases, or CPW walk-in properties.
Managers: Private ranch, Colorado State Trust Land (generally closed), County roads / section-line access
Access points: Public county and section-line roads · US 40 and US 287 · CPW Public Access Program properties (check Atlas yearly)
Species notes
Pronghorn
common opportunityThe marquee species and the reason to draw a 121 tag. Antelope are spread across the open prairie and ag edges; five-year success has run around 53% with the largest harvest of any species in the unit — a solid opportunity buck-antelope destination.
- →Glass from high ground at first and last light and spot-and-stalk using the rolling terrain to close
- →Focus on water sources — stock tanks, windmills and creek pools — in early-season warm weather
- →Secure ranch permission or map CPW Public Access parcels well before the season
- →Use decoys or ambush near fence crossings during the rut
Mule Deer
limited opportunityMule deer are a limited-draw plains resource here, concentrated along the creek bottoms, sagebrush pockets and cropland edges rather than spread evenly. Harvest is modest but success is respectable for those with access.
- →Hunt the transition between cover in the creek drainages and adjacent feed fields at dawn and dusk
- →Work sand-sagebrush and yucca breaks that hold bedding bucks
- →Bring optics — deer use the folds of the prairie and can be hard to pick out
Whitetail Deer
limited opportunityA minority of the plains deer here are whitetails tucked into the cottonwood and tamarisk river bottoms, a pattern typical of far-eastern Colorado drainages. They stay close to cover and water.
- →Focus on the timbered creek bottoms and shelterbelts rather than open prairie
- →Watch travel routes between bedding cover and ag fields
- →Still-hunt or set up on funnels in the cottonwoods
Pro tips
- →Treat access as the whole game — a drawn tag is worthless without ranch permission or a mapped CPW Public Access property
- →Antelope are the strongest opportunity; apply here primarily for pronghorn
- →Scout the creek bottoms specifically for whitetails if deer is your goal
- →Verify every State Trust parcel in the Atlas — most are closed to hunting
- →Water sources concentrate game on this dry prairie, especially early season
Watch out for
- !State Trust Lands are generally CLOSED to hunting unless in the Public Access Program
- !Nearly all ground is private — trespass risk is high without clear permission
- !Long distances between services; carry water, fuel and recovery gear
- !Muddy two-tracks after rain or snow can strand vehicles
Logistics
Services are thin out here. Fuel, groceries and basic lodging are in Kit Carson, Cheyenne Wells and Eads; larger supply runs mean Limon or Lamar. Cell coverage is spotty off the highways. Plan to be self-sufficient and secure water and access ahead of time.
Nearest towns: Kit Carson, Cheyenne Wells, Eads, Hugo
Seasons & regulations
This page carries no season dates or regulations. Get current rules from the official Colorado sources:
Research sources: CPW Big Game GMU Boundaries and Statistics · CPW Public Access Program (Walk-In Access)
FAQ
- How big is GMU 121 in Colorado?
- GMU 121 (GMU 121 — Cheyenne/Lincoln/Kiowa Co.) covers about 1,052 square miles, ranging from roughly 4,000 to 4,900 feet in elevation. Area is computed from the unit boundary polygon.
- How much public land is in GMU 121?
- Approximately 2% of the unit is public land. Primary managers: Private ranch, Colorado State Trust Land (generally closed), County roads / section-line access. Always verify ownership boundaries on the ground.
- What species does the catalog list for GMU 121?
- Pronghorn, Mule Deer, Whitetail Deer. For seasons, tags, and regulations, use the official Colorado agency resources linked on this page — this page carries no regulatory information.
Put GMU 121 on your map.
Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.