Unit 63A

Agricultural Snake River valley floor with scattered buttes and modest elevation breaks.

Hunter's Brief

This is upper Snake River valley country—mostly open, irrigated agricultural land with low buttes providing the only significant terrain relief. The landscape sits entirely below 5,700 feet with minimal forest cover. Access is straightforward via a well-connected road network including U.S. 191, Highway 26, and numerous rural roads threading through farming communities like Rexburg, Rigby, and Ririe. Water is abundant from the Snake River system and extensive canal networks. Terrain complexity is minimal; navigation and orientation are straightforward. This is whitetail country in agricultural habitat rather than traditional backcountry terrain.

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Terrain Complexity
1
1/10
?
Unit Area
324 mi²
Moderate
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Public Land
18%
Few
?
Access
4.1 mi/mi²
Connected
?
Topography
0% mountains
Flat
?
Forest
Sparse
?
Water
2.1% area
Abundant

Terrain Deep Dive

Landmarks & Navigation

The Menan Buttes stand as the unit's most recognizable landmark, offering glassing opportunities across the valley floor. Little Buttes and Lewisville Knolls provide secondary elevation breaks for orientation. Market Lake and associated sloughs (Roberts, Oxbow, Butte) serve as geographic anchors on the valley floor.

The South Fork Snake River and Henrys Fork drainage define the western boundary and provide key water features for navigation. Spring Creek and Willow Creek drainages cut through agricultural land. Tie Bend on the river marks a navigation reference point.

Elevation & Habitat

The entire unit occupies a narrow elevation band between 4,682 and 5,617 feet, with most terrain clustering around 4,800 feet. This is low-elevation, agricultural country with sparse forest cover. The landscape consists primarily of irrigated farmland, sagebrush flats, and scattered development.

Relief comes from modest buttes—the Menan Buttes and Little Buttes provide the only significant topographic breaks in an otherwise flat valley floor. Habitat transitions from open agricultural fields to scattered juniper and sagebrush on higher knolls. Kelly Canyon offers one of the few areas with more pronounced terrain variation.

Elevation Range (ft)?
4,6825,617
02,0004,0006,000
Median: 4,826 ft
Elevation Bands
5,000–6,500 ft
3%
Below 5,000 ft
97%

Access & Pressure

The unit sits within a well-developed valley with excellent road connectivity. U.S. 191 and Highway 26 provide major highway access, while dozens of rural county roads grid the agricultural landscape. Over 1,300 miles of road exist within the unit, making nearly every corner accessible by vehicle.

Communities like Rexburg (pop. 30,000+), Rigby, and Ririe sit at the unit's core, indicating significant local hunting pressure and development. This is not backcountry; expect populated areas, fenced agricultural land, and regular human activity throughout the year.

Boundaries & Context

Unit 63A encompasses portions of Bonneville, Jefferson, and Madison counties in southeastern Idaho's upper Snake River valley. The boundaries follow county lines, the Rexburg-Kilgore Road to the north, and U.S. 191 to the east, with the South Fork Snake River forming a natural boundary on the western side. Small communities including Rexburg, Rigby, Ririe, Roberts, and Menan sit within or directly adjacent to the unit.

The area represents the agricultural heartland of the Snake River valley floor—a flat, developed landscape rather than wilderness or remote public land.

Land Cover Breakdown?
Mountains (open)
0%
Plains (open)
98%
Water
2%

Water & Drainages

Water is abundant throughout the unit. The South Fork Snake River dominates the western portion, flowing north toward its confluence with the main Snake River. Henrys Fork approaches from the south.

An extensive network of irrigation canals—including the Upper Holmes Lateral, Owners Mutual Canal, East Canal, and numerous others—threads through agricultural areas, providing reliable water year-round. Spring Creek, Willow Creek (with north and south forks), and Birch Creek offer additional drainages. Market Lake and associated sloughs add seasonal water features.

Water scarcity is not a hunting consideration in this unit.

Hunting Strategy

Unit 63A holds white-tailed deer as the primary game species, utilizing agricultural fields and sagebrush draws along buttes and drainage corridors. The flat terrain and open agricultural landscape mean visibility works both ways—deer are relatively exposed but easily spotted glassing from buttes or open ridges. Focus on transition zones between irrigated fields and sagebrush habitat, particularly around the Menan Buttes, Little Buttes, and Lewisville Knolls where topography offers cover.

Drainages like Willow Creek and Spring Creek provide corridors for deer movement. The unit supports a localized deer population rather than migratory herds; early season hunting during summer dispersal and fall rut activity near buttes and creeks offers the best opportunities. Navigate carefully around private land and posted boundaries.