GMU 42: public land and hunting map
GMU 42 is one of Colorado Parks and Wildlife’s 186 Game Management Units (GMUs) in Colorado. It covers about 605 square miles (386,892 acres), and roughly 55% of it is public land: Forest Service 30%, BLM 22%, state land 3.3%.
- 55%public land
- 605square miles
- 214,338public acres
- 8neighbouring units
Measured Oct 12, 2026 from agency boundaries and USGS PAD-US 4.1 · sources and method
Who manages the land
- Bureau of Land Management22%
- U.S. Forest Service30%
- State land (wildlife, trust and natural-resource agencies)3.3%
Share of the unit’s area. Federal agencies plus state wildlife, trust and natural-resource land, as the WikiHunt map classifies it. The rest is private, tribal, local or other land.
Rut: Published deer rut timing for Colorado: Mid-Nov – mid-Dec. Rut dates and sources for Colorado.
Units next to GMU 42
Colorado season dates, 2026
Statewide general seasons. Many units have their own dates, quotas or draw-only hunts, so check the unit in the regulations before you go.
| Species | Season | 2026 dates |
|---|---|---|
| Deer | Archery Deer | Sep 2 – Sep 30 |
| Deer | Muzzleloader Deer | Sep 12 – Sep 20 |
| Deer | Combined Rifle Deer | Oct 14 – Nov 22 |
| Elk | Archery Elk | Sep 2 – Sep 30 |
| Elk | Muzzleloader Elk | Sep 12 – Sep 20 |
| Elk | Combined Rifle Elk | Oct 14 – Nov 22 |
| Pronghorn | Rifle Antelope | Oct 3 – Oct 11 |
| Black bear | Fall Bear | Sep 2 – Nov 30 |
Full notes on the Colorado page · Colorado regulations.
Questions
How much of GMU 42 is public land?
About 55% of GMU 42 (214,338 of 386,892 acres) is federal or state public land in USGS PAD-US 4.1, mostly U.S. Forest Service, Bureau of Land Management and State land (wildlife, trust and natural-resource agencies). Public land is not always open land: check access and closures before you go.
Who manages the land in GMU 42?
U.S. Forest Service: 30%; Bureau of Land Management: 22%; State land (wildlife, trust and natural-resource agencies): 3.3%. The rest is private, tribal, local government or other land.
Which units border GMU 42?
GMU 31, GMU 32, GMU 33, GMU 34, GMU 41, GMU 421, GMU 43 and GMU 521.
Where are the season dates and rules for GMU 42?
Colorado Parks and Wildlife sets them. Start at the Colorado hunting regulations. WikiHunt shows the statewide general seasons on the Colorado page and in the app.
Sources and method
- Boundary: Colorado Parks and Wildlife, the same layer the WikiHunt map draws.
- Public land: USGS Protected Areas Database (PAD-US) 4.1, Fee Managers layer (public domain).
- Method: the unit and PAD-US polygons are simplified to about 100 m and measured on a grid of about 250 cells across the unit, so overlapping records are counted once. Expect about ±1 percentage point.
- Season dates: WikiHunt’s season table, updated Sep 2, 2026, checked against each state’s published regulations. Dates change; the regulations win.
- Last updated: Oct 12, 2026. Spotted a mistake? Tell us.