Units / Colorado / GMU 521

Unit research · Colorado GMU 521

GMU 521 — Colorado

75% public across 324,936 ac. Real backcountry here — 36% of the public land sits more than a mile from any road. Little to no landlocked public land.

Open in mapDownload GPXFree — no account
[ unit preview — pipeline-rendered map lands here ]GMU 521
75%

public land

36%

of public >1 mi from a road

148 ac

landlocked public

1.09

road miles per mi²

269 mi

maintained trails

Computed from primary government data by the open pipeline. See the code →

Land & access

■ USFS 68%■ BLM 7%■ SFW 0%□ Private 25%
Unit area324,936 ac
Public land244,792 ac (75%)
Landlocked public148 ac (0.1%)
Motorized routes (MVUM + roads)552 mi
Maintained trails269 mi

Backcountry

Public land >1 mi from a road87,376 ac (36% of public)
Road density1.09 mi/mi²
Managed byUSFS 220k ac · BLM 24k ac · SFW 2k ac
Elevation distribution, slope mix and timberline stats land with the terrain analytics pass — the DEM work is already in the pipeline.

Draw & harvest

Draw odds, harvest rates and season dates are next.

The state agencies publish them — locked in PDFs. The parsing pipeline is the next data milestone, and when it ships, this section fills in for every unit at once, free, with a link to the query that computed it.

How these numbers are made

public_land_pct = public_area / unit_area
landlocked = public ∖ reachable(roads, corners)
remote = public ∖ buffer(roads, 1 mi)

Computed, not curated: no paid research team, no opinions dressed as data. If a number looks wrong, file an issue — the fix ships for everyone.

More Colorado units

GMU 5120% public · 0% remoteGMU 55187% public · 3% remoteGMU 56191% public · 9% remote

Ready to scout it?

Everything on this page, live on the map — ownership, boundaries, roads, and your own waypoints.

Open GMU 521 in the map