Unit 791
ALAMOSA/MINERAL/RIO GRANDE/SAGUACHE
San Luis Valley ranch and agricultural country bounded by highways, sparse timber and wide-open basins.
Hunter's Brief
Unit 791 sits in the San Luis Valley between Alamosa and the Rio Grande, a mix of private ranch land and open basin country with minimal forest cover. The terrain is notably flat and straightforward—no steep climbing or complex navigation required. Access is good via Colorado 17 and US 160, but public land is scarce, making permission essential. Water exists primarily in managed ditches and the Rio Grande drainage system. Expect this to be a permission-dependent hunt in agricultural and ranching country.
- Compact: under 200 sq mi
- Moderate: 200 - 800 sq mi
- Vast: over 800 sq mi
- Few: under 25%
- Some: 25 - 60%
- Most: over 60%
- Limited: under 0.7 mi/mi² (backcountry)
- Fair: 0.7 - 1.5 mi/mi²
- Connected: over 1.5 mi/mi² (well-roaded)
- Flat: under 20% mountains
- Rolling: 20 - 55%
- Steep: over 55%
- Sparse: under 20%
- Moderate: 20 - 50%
- Dense: over 50%
- Limited: under 0.3% area
- Moderate: 0.3 - 2% area
- Abundant: over 2% area
Terrain Deep Dive
Landmarks & Navigation
Sherman Lake provides a recognized water feature and navigation reference in the landscape. The Rio Grande and its associated drainage (Rio Grande Drain) form the primary water corridor and natural travel route through the unit. Dog Springs Arroyo and Limekiln Creek offer additional drainage references.
Peñascito summit serves as a distant landmark for orientation. The managed canal network—including Rio Grande and Lariat Canal, Centennial Ditch, and Raney Ditch—creates linear features visible on maps and useful for navigation in open country. Colorado 17 running north-south is the dominant visual reference.
Elevation & Habitat
Elevations cluster tightly between 7,500 and 7,900 feet, creating a consistent high-valley environment without significant elevation-driven habitat transitions. Forest cover is sparse—mostly scattered juniper and pinyon with predominant sagebrush-grassland terrain. The openness of the landscape means visibility is generally excellent, but shade and thermal cover are minimal.
Vegetation patterns reflect the semi-arid valley climate; dominant habitat is low-elevation basin shrub and grassland rather than timbered country. The flat topography contrasts sharply with the mountains visible on the valley perimeter.
Access & Pressure
The unit is connected by paved highways and county roads, making vehicular access straightforward and convenient. However, the 'Few' public land badge indicates most terrain is private ranch and agricultural land. This fundamentally changes the access equation—road connectivity matters little if you can't legally hunt the ground.
The unit's ease of access means it receives pressure proportional to the small public acreage available. Strategic hunting requires prior land access arrangements. The nearby towns of Alamosa and smaller communities mean population pressure is real on any available public areas.
Boundaries & Context
Unit 791 occupies the central San Luis Valley, bounded north by County Road G, east by Colorado 17, south by US 160, and west by Colorado 112 and US 285. The unit encompasses parts of Alamosa, Rio Grande, and Saguache counties in south-central Colorado. This is valley-floor country with numerous small communities (Alamosa, Mosca, Evansville, Homelake) scattered throughout, reflecting the settled, agricultural nature of the landscape. The surrounding valley extends broadly in all directions, making orientation straightforward from major highway references.
Water & Drainages
Water is limited and largely managed. The Rio Grande flows through the unit as the major perennial feature, accessible in multiple locations. Rio Grande Drain runs parallel to the main river.
Numerous irrigation canals (Centennial, Rio Grande and Lariat, Raney Ditch, Hiline Lateral, and others) crisscross the valley floor, providing reliable water during irrigation season but inconsistent flow outside that window. Seasonal arroyo flows (Dog Springs Arroyo, Limekiln Creek) exist but aren't reliable. Sherman Lake is a static water source.
Summer hunting will have more water options than fall; late-season water planning is critical.
Hunting Strategy
Unit 791 historically holds elk, deer (mule and white-tailed), pronghorn, moose, bear, and mountain lion. The sparse forest and open basin terrain favor pronghorn and mule deer adapted to grassland and shrub country. Elk are present but concentrate in the few timbered draws and riparian areas.
Hunting success depends entirely on access—public land is minimal, so focus first on securing permission or identifying Wildlife Management Area public parcels. If public access is available, water sources (Rio Grande, Sherman Lake, major canals) become concentration points. The flat terrain offers straightforward glassing from roads, but the landscape's openness means animals have excellent escape routes.
Early season when water is abundant offers more flexibility; late season demands proximity to reliable sources like the Rio Grande.