Unit 43A
Yuma
Low-desert basin country along the Colorado River with sparse mountains and limited water sources.
Hunter's Brief
Unit 43A spreads across the lower Colorado River valley, a vast expanse of creosote-dotted flats interspersed with low desert mountains and dry washes. The terrain is straightforward—low elevation, minimal forest cover, and connected by well-developed road networks including US 95 as the main corridor. Water is scarce and concentrated around springs, tanks, and the Colorado River drainage. Access is fair throughout, with most hunting occurring in familiar, lower-complexity country. Pronghorn, desert sheep, and mule deer adapt to this arid landscape.
- 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
The Dome Rock Mountains serve as the primary visual anchor in an otherwise featureless basin. La Cholla Mountain and the twin Trigo Peaks provide secondary reference points for navigation and glassing. Multiple washes—Weaver, Trigo, Ehrenberg, and La Paz among others—act as travel corridors and water-seeking routes for wildlife.
Cibola Lake sits at the southern boundary and holds water seasonally. The Colorado River itself remains a constant geographic reference, though it borders rather than crosses the unit.
Elevation & Habitat
This is low-desert country. Most terrain sits below 2,000 feet, with scattered peaks like La Cholla Mountain and the Dome Rock Mountains barely breaking 3,000 feet. Sparse desert scrub—creosote, palo verde, and scattered juniper on the few higher ridges—dominates the landscape.
The Colorado River drainage creates a riparian corridor that contrasts sharply with surrounding desiccated flats and washes. Elevation gain is modest and gradual; there are no dramatic transitions, just a slow blending of flat basin floor into low-relief mountain terrain.
Access & Pressure
US Highway 95 provides primary access, well-maintained and crossed by county roads like the Stone Cabin-King Valley Road and Cibola Lake Road. Over 1,400 miles of roads network through the unit, making vehicle access straightforward across most terrain. This connectivity means established hunting areas see regular use, particularly near water sources and around known pronghorn and sheep habitat.
However, the vast basin size allows hunters willing to venture away from main roads to find quieter country. Pressure concentrates near Quartzsite and Parker rather than distributed throughout.
Boundaries & Context
Unit 43A occupies the lower Colorado River valley from the Bill Williams River on the north to the California border and Cibola Lake on the south. US Highway 95 forms the primary east-west spine through the unit, with the Kofa National Wildlife Refuge anchoring the eastern boundary. The Great Colorado Valley basin comprises most of the unit, a vast lower-elevation expanse that stretches roughly 80 miles north to south.
Towns like Quartzsite, Parker, and Ehrenberg sit along or near the boundaries, providing staging points and resupply locations.
Water & Drainages
Water is the limiting factor here. The Colorado River runs the western edge but isn't always accessible. Cibola Lake offers seasonal water at the south end.
Scattered springs—Kaiser Waterhole, Tule Springs, Havasu Spring, and Oldman Tanque—dot the landscape but require knowledge to locate. Numerous washes (Weaver, Trigo, Ehrenberg, La Paz, Mohave, and others) flow seasonally after rain but can't be relied upon. Goodman Tank and White Tanks provide stockwater but may be minimal by hunting season.
Water scarcity fundamentally shapes where game concentrates.
Hunting Strategy
Unit 43A supports pronghorn, mule deer, and desert bighorn sheep in its arid habitat. Pronghorn thrive in the open basin flats; early and late season hunting focuses on water concentration areas and migration corridors between lower and slightly higher terrain. Desert sheep inhabit the Dome Rock Mountains and other low ridges, requiring glassing from distance and patience—they're present but not abundant.
Mule deer seek shade and browse in washes and scattered higher ground. Mountain lion and javelina round out opportunities. Water location drives strategy; find reliable sources and you find game.
Early season hunts benefit from cooler temperatures; late season demands focus on river access and known spring systems.