Unit 125
Fifteen Mile
Sagebrush basins and scattered ridges across wide-open lower-elevation country with limited water.
Hunter's Brief
Unit 125 spreads across rolling high-desert terrain dominated by sagebrush flats and occasional buttes, with elevations staying in the lower range. Water is scarce and scattered across reservoirs and seasonal creeks, making water sources critical for planning. Road access is limited but exists throughout the unit, though distances between features demand solid navigation skills. The country opens up with pockets of timber on ridges, offering mixed opportunities for both mule deer and whitetails across the varied basins.
- 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
Several prominent features anchor navigation across this expansive country. Rimrock Basin and Badger Creek Basin provide geographic references in the central unit, while Badger Gulch and multiple draws (Schuster, Gillies, Murphy, Colter) offer natural travel corridors. Hillberry Rim marks a notable topographic break, and summits like Red Hill, Tatman Mountain, and Sheep Mountain serve as distant glassing points and orientation aids.
Dobson Pond and several reservoirs including Asays, Snoopy, and Hunt mark reliable water reference points. These scattered features help break up the vast open space.
Elevation & Habitat
Terrain stays firmly in the lower elevation band, ranging from just under 4,000 feet in the basin floors to near 6,700 feet on the highest ridges. The landscape is predominantly sagebrush prairie broken by scattered juniper and pine on ridges and south-facing slopes. Vegetation is sparse and low-growing across most of the unit, with occasional stands of timber providing shade and shelter on higher ground.
The habitat transitions gradually rather than dramatically—expect open country with intermittent cover rather than distinct zones. Grassy draws and creek bottoms offer better forage in otherwise arid terrain.
Access & Pressure
Limited road density means hunting pressure concentrates around accessible drainages and established parking areas near Highway 120 and interior county roads. The 120 miles of total roads provide irregular access across the vast unit, leaving considerable country between road corridors. This creates both challenge and opportunity—accessible areas see more pressure, but interior basins and draws can be quieter if you're willing to hike.
The sparse road network means traditional four-wheel drive access is important, and seasonal mud can trap vehicles. Most hunters likely stick to established routes, leaving lateral terrain under-pressured.
Boundaries & Context
Unit 125 occupies a sprawling section of northwestern Wyoming's lower elevation country, anchored by Wyoming Highway 120 on the western boundary dividing the Greybull River and Fifteenmile Creek drainages. The unit encompasses multiple basins and draws extending north and east across open terrain dotted with named flats, ridges, and historic landmarks. This is primarily private and public mixed-use country typical of Wyoming's basin-and-range topography, characterized by wide-open spaces with modest elevation relief and minimal forest cover.
The surrounding landscape continues the same high-desert pattern in all directions.
Water & Drainages
Water is limited and concentrated at specific locations—critical for hunting strategy and camp planning. Multiple reservoirs (Asays, School Section, Snoopy, Wilson, Leithead, Neves, Hunt, Wortham) provide reliable stock water but may vary seasonally. Buffalo Creek, Badger Creek, and the forks of Fifteenmile Creek represent the main drainage systems; flows depend on snowmelt timing.
Springs including Parker Springs, Wilson Spring, and Baking Powder Springs offer backup water but require scouting. The Peterson Ditch, Bluff Canal, and other irrigation features indicate surface water availability in some areas, though primarily for agricultural use. Dry periods can isolate portions of the unit.
Hunting Strategy
Mule deer utilize the sagebrush basins year-round, with higher concentrations on ridges and near water during hot periods. Whitetails favor the brushy creek bottoms and draws where cover exists. Early season hunting focuses on higher ridges and north-facing slopes for cooler conditions; early morning glassing from elevated vantage points like Hillberry Rim or Tatman Mountain can locate deer before heat drives them to shade.
Mid-season strategy emphasizes water sources—reservoirs and springs become funnels as dry conditions intensify. Late season finds deer concentrated in drainages with remaining vegetation and reliable water. The open terrain rewards glassing skills, but patience and water knowledge are equally important.
Scout creeks and identify ranch water sources before the season.