Unit 2A, New Mexico

Terrain is easy to moderate — a landscape of rolling, scrub-covered mesas dissected by sandstone canyons, badland arroyos, and river corridors. Elevation rises from approximately 5,050 feet along the San Juan River bottomlands to about 7,215 feet on the highest mesa tops, with the bulk of the unit between 5,500 and 6,500 feet. The San Juan River and its tributaries (including the Animas River near the eastern edge) carve broad bottomlands. Foothills contain gradual inclines with exposed sandstone rock formations; the flatlands are classic semi-desert with hard-packed dirt, gravel, and sand interspersed with sparse grasses.

The BLM Farmington Field Office (505-564-7600), headquartered at 6251 College Blvd., Suite A, Farmington, NM 87402, manages over 1.4 million acres of public land in the San Juan Basin; BLM parcels make up the dominant public-land base in GMU 2A. US Highway 550 and US Highway 64 are the primary paved corridors, connecting Farmington, Aztec, and Bloomfield to interior dirt and gravel roads. High-clearance vehicles are advised on oilfield roads with heavy energy-development traffic. The Rattlesnake Canyon area within the unit is closed to hunting (verify current closure boundaries with BLM Farmington). The unit borders the Navajo Nation and Ute reservations, both closed to non-tribal hunting without tribal permits. Large private ranches along the San Juan River corridor block access to much of the best river-bottom habitat. State Trust Land requires a recreational access permit from the New Mexico State Land Office. No National Forest or Wilderness areas fall within GMU 2A boundaries. Hunters must verify BLM versus private and tribal land boundaries using mapping apps or the BLM Farmington Quad and Navajo Reservoir Quad reference maps.

Lower elevations and river terraces support cottonwood, willow, and tamarisk riparian corridors. Mid-elevation slopes and mesas are blanketed by pinyon-juniper woodland that thickens with altitude. Sagebrush and oakbrush occupy the transition zones between 5,500 and 6,500 feet. At the highest mesa elevations some ponderosa pine appears. Agricultural fields and irrigated hay ground near Farmington and Bloomfield concentrate game along river margins in fall and winter. The broader landscape is high-desert scrub with native grasses and sparse shrubs on flats between drainages.

Mule deer are the primary big-game attraction; bucks winter in river bottoms and adjacent mesas, with some migration from higher elevations during hard winters. San Juan County has historically ranked among top B&C mule deer counties. Elk are present and increasing — NMDGF increased license numbers for GMU 2 to reflect population gains (confirmed by NMDGF 2023-2024 forecast). Elk use pinyon-juniper mesas, agricultural fields along river bottoms, and brushy canyon drainages. Bulls average 290–320 inches of antler with a bull-to-cow ratio of approximately 34:100 (secondary sources; unconfirmed from primary NMDGF data). Pronghorn inhabit open sagebrush and grassland flats in the flatter portions of the unit. Black bear and mountain lion are present at lower densities in rugged canyon and PJ country. Wildlife concentrates around water sources (stock tanks, reservoirs, river corridors) in this semi-arid landscape.