Unit 75, Colorado

GMU 75 covers approximately 646 square miles (about 413,000 acres) with elevations ranging from roughly 6,500 feet in valley bottoms near Durango and the Animas River corridor up to over 13,000 feet on high San Juan peaks in the northern portion. The unit is characterized as extremely steep and rugged — among the most technically demanding terrain in Colorado, reportedly requiring the most search-and-rescue operations of any GMU in the state. The northern half is dominated by heavily forested, precipitous mountain slopes; the southern half transitions to lower, rolling foothills and private flatlands before reaching the Southern Ute Reservation near the New Mexico border. Alpine basins and tundra are common above 11,500 feet in the north, while mid-elevation terrain consists of steep canyons and forested ridges.

US Highway 550 (the 'Million Dollar Highway') parallels the western boundary of the unit north from Durango toward Silverton, providing the primary access spine. US Highway 160 passes through or near the southern edge connecting Durango to Pagosa Springs. Key forest road corridors off US 550 include Lime Creek Road (Forest Road 591), a roughly 12-mile high-clearance dirt road north of Durango that gives access to mid-elevation timber and the Weminuche boundary. Missionary Ridge Road (County Road 250 / Forest Road 682) east of Durango provides 4WD access up the ridge; this corridor intersects post-fire regeneration habitat. La Plata County Road 240 (Pine River-Florida River Road) and the Bayfield-Vallecito Road on the east side of the unit provide approaches toward Vallecito Reservoir and the eastern wilderness trailheads. The Durango and Silverton Narrow Gauge Railroad corridor through the Animas canyon provides non-motorized backcountry access for archery hunters to wilderness drainages. The Columbine Ranger District of San Juan National Forest (15 Burnett Court, Durango; 970-247-4874) administers approximately 691,310 acres in La Plata and San Juan counties and includes the majority of public land in GMU 75. The northern portion of the unit includes part of the Weminuche Wilderness (499,771 acres total — Colorado's largest wilderness area, confirmed by USFS), accessible from trailheads at Purgatory Flats, Lime Creek, and Vallecito. Wilderness rules prohibit motorized vehicles; foot and horse access only. Additional coverage includes the West Needles Contiguous WSA and Handies Peak WSA. Many secondary forest roads open seasonally (typically late May to early December); check the San Juan NF Motor Vehicle Use Map and current conditions before travel. The southern portion of the unit adjoins the Southern Ute Indian Reservation, where general recreation is limited to tribal members; approved non-member hunting may be available via tribal permit — contact the Southern Ute Wildlife Division at 970-563-0130. The remainder of the southern half is predominantly private agricultural and ranch land, with a checkerboard of private and public in the rolling foothills. Approximately 44% of the unit is public land (roughly 36% USFS, 8% BLM); 56% is private or tribal.

Vegetation is strongly elevation-driven. Lower foothills and valley bottoms (6,500–8,000 ft) feature sagebrush, pinyon pine, and juniper with irrigated hay and alfalfa fields along drainages — critical winter range for deer and elk. Mid elevations (8,000–10,500 ft) are characterized by steep slopes covered in Gambel oak (scrub oak) and dense mixed-conifer forest of spruce, fir, and ponderosa pine, interspersed with scattered aspen groves. The Missionary Ridge Fire (2002) burned roughly 70,000 acres in the La Plata Mountains portion of the unit, creating dense regenerating oakbrush and new-growth aspen that now provide rich browsing habitat. Upper elevations (10,500–12,000+ ft) transition to subalpine spruce-fir forest, open parks, and high alpine meadows. Above timberline the terrain opens into boulder fields, tundra grassland, and talus — classic summer elk range. Riparian corridors along the Animas, Pine, and Florida Rivers support cottonwood and willow.

Elk and mule deer are the primary big game species. Elk herds occupy the unit year-round, summering at high elevation in alpine parks and Weminuche backcountry, and migrating to lower mid-elevation winter range during late fall and early winter. A well-documented movement sees elk pushed off national forest land by rifle season pressure and converging on private alfalfa fields and apple orchards along the Highway 550 corridor. Mule deer follow a similar elevational migration — summer range in alpine and upper-subalpine zones, winter range on low-elevation private land and sagebrush foothills in the southern unit, creating access complications for later rifle seasons. Black bear are common throughout, particularly in oakbrush and aspen zones during summer and early fall when foraging on berries and acorns. Mountain lion inhabit the unit year-round, following deer concentrations. Wild turkey (Merriam's) are present in oak and ponderosa transition zones. Shiras moose and pronghorn are listed as present by some aggregators but no CPW population data or hunt opportunity has been documented for GMU 75 specifically — these species are likely incidental or absent in meaningful numbers.

1. Harvest stats (21.3% success, 690 animals) are sourced from HuntScore citing 2022 data across all species and methods — not elk-only; treat as a rough cross-species benchmark. Elk-only or deer-only unit-level success rates were not publicly available in sourced documents. 2. Tag quota (number of licenses) is not available for GMU 75 specifically from any sourced document. 3. OTC 2nd/3rd rifle bull elk for Unit 75 confirmed via Horn and Fin listing and forum sources consistent with CPW's statewide OTC bull elk program. Verify exact hunt codes (e.g., EM075U2R, EM075U3R) in the official 2026 brochure before applying. 4. Nonresident archery elk became draw-only for GMUs west of I-25 (including Unit 75) starting in 2025; resident archery elk OTC status for Unit 75 should be confirmed in the 2026 brochure. 5. Moose and pronghorn omitted — listed as present by some aggregators but no CPW population data or harvest opportunity documented for GMU 75. 6. Public land percentage (44%) from HuntScore; GoHunt cites 45% — minor discrepancy, likely rounding. 7. Southern Ute tribal land adjoins the southern unit; general recreation is limited to tribal members but approved non-member hunting may be available via permit (970-563-0130) — the draft claim of total exclusion was softened based on tribal website language. 8. Season dates corrected from draft per Raghorn Outfitters 2026 calendar: Muzzleloader Sep 12–20; 1st Rifle Oct 14–18; 2nd Rifle Oct 24–Nov 1; 3rd Rifle Nov 7–17; 4th Rifle Nov 18–22. Confirm in official CPW 2026 brochure.