Unit 78, Colorado

Elevation ranges from roughly 6,500 feet in the rolling foothills near Pagosa Springs and the New Mexico border up to approximately 13,307 feet at Summit Peak and other high San Juan summits. The western side of the unit consists of steep, heavily timbered slopes dropping to aspen benches and low, oak-covered rolling foothills. The eastern half, closer to the Continental Divide, holds open alpine tundra with willow thickets and stunted spruce above treeline. Terrain is consistently steep and remote. Weather can be severe and change rapidly. The unit encompasses approximately 764 square miles (about 488,000 acres).

The primary access corridor is US Highway 160, which crosses Wolf Creek Pass (10,857 ft) along the northern boundary. US Highway 84 forms the western boundary south of Pagosa Springs toward the New Mexico border. Key access roads off these highways include Forest Road 663 (west of Wolf Creek Pass), the East Fork Road (FS 667) paralleling the East Fork San Juan River, the Blanco River Road, the Mill Creek Road, and the Navajo Road. The Pagosa Ranger District of the San Juan National Forest (headquarters: 180 Pagosa Street, Pagosa Springs, CO 81147; 970-264-2268) manages the bulk of the public land. The eastern and southeastern portions, beyond the Continental Divide, fall within the Rio Grande National Forest. The South San Juan Wilderness (158,790 acres) covers the eastern interior of the unit and contains approximately 180 miles of trails, including 42 miles of the Continental Divide Trail; no motorized or mechanized vehicles are permitted inside wilderness boundaries. Access to the wilderness interior is by foot or horseback only. Trailheads include East Fork/FS 667 trailheads, Cimarrona/Beaver Lakes area off Hwy 84, and Adams Fork near Platoro Reservoir on the Conejos River drainage. Roadside camping and non-wilderness trailhead access are available off FS roads, but four-wheel drive is recommended for higher forest roads. Some southern areas below Hwy 160 and along the New Mexico border contain private ranch holdings, creating a partial private-land checkerboard in the lower elevations. ATVs are restricted to marked roads only; no motorized access exists within the South San Juan Wilderness. West Fork Road has experienced flood damage closures; hunters should verify road status with the Pagosa Ranger District before trips.

Low elevations (6,500–7,500 ft) support scrub oak (Gambel oak / oakbrush) and ponderosa pine on drier south-facing slopes with scattered pinyon-juniper near the southern boundary. Mid-elevations (7,500–10,500 ft) transition through mixed conifer (Douglas-fir, white fir) and extensive aspen stands, with aspen benches providing key transition habitat between lower oakbrush and upper conifers. Upper elevations (10,500–12,500 ft) are dominated by spruce-fir (Engelmann spruce / subalpine fir) forests. Above timberline the unit opens into alpine tundra, willow carr, and rocky alpine meadows. Riparian corridors follow the East Fork San Juan River, the Blanco River, and other drainages. Beetle kill has opened some spruce-fir stands, creating pockets of deadfall and early-successional habitat.

Elk are the dominant big game species; herds spend summer on high alpine meadows and spruce-fir parks near and above timberline, migrating downslope to mid-elevation aspen and oakbrush winter range as snow accumulates in fall. Unit 78 is routinely among Colorado's top producers of elk by total harvest, though hunter density is high. Mule deer inhabit similar terrain with bucks using higher country in summer and early archery season, dropping to oakbrush and pinyon-juniper foothills for later rifle seasons. Shiras moose are present in riparian willow corridors, particularly along headwater streams. Black bears are abundant throughout, using oakbrush and berry patches heavily in late summer and fall. Mountain lion inhabit the unit year-round following deer and elk herds. Wild turkey are present in lower-elevation ponderosa and oakbrush zones. The South San Juan Wilderness historically sheltered the last documented grizzly bear in Colorado (killed 1979); no confirmed grizzly population currently exists. High-elevation lakes and streams hold native cutthroat trout. Bear predation on elk calves has been noted as a factor in calf recruitment.

Season dates confirmed via CPW 2025-2029 Big Game Season Structure document and GOHUNT analysis: archery Sept 2-30, muzzleloader Sept 12-20, 1st rifle Oct 14-18, 2nd rifle Oct 24-Nov 1, 3rd rifle Nov 7-15, 4th rifle Nov 18-22. Nonresident archery draw-only (west of I-25) confirmed effective 2025 and continuing 2026. GMUs 54/55/551 (Gunnison Basin) moved to draw but GMU 78 OTC bull elk 2nd/3rd rifle not on converted list. New 1st rifle deer hunt for 77/78/771 grouping confirmed by Bear Creek Archery source. Summit Peak (13,307 ft) is the verified high point of the South San Juan Wilderness per Wikipedia; draft reference to Montezuma Peak at 13,150 ft is unverified and has been removed. Wilderness acreage (158,790 acres), trail miles (180), and CDT miles (42) confirmed via Wikipedia. Unit-level elk/deer harvest counts and draw quotas remain unavailable from public sources; CPW harvest reports are PDF-only.