Unit 36A

Pierre Army Air Field provides a major geographic reference point. The Missouri River and its associated reservoirs—particularly Lake Arikara and Swanson Lake—serve as primary navigation landmarks and water sources. Notable drainages include Medicine Knoll Creek, Joe Creek, and Chapelle Creek, which cut through the prairie as natural travel corridors.

Farm Island and Wood Island in the river system offer reference points. Small communities including Pierre, Blunt, and Alto provide access and resupply locations around the unit's perimeter.

The entire unit sits between 1,400 and 2,100 feet with consistent prairie grassland habitat throughout. There's virtually no timber—the landscape is open shortgrass and midgrass prairie interrupted by scattered shrubland in draws and creek bottoms. Vegetation transitions occur primarily along water drainages where cottonwoods and willows create ribbons of cover through otherwise treeless country.

The flat terrain and sparse vegetation create the classic northern Great Plains appearance: endless grassland with rare stands of trees marking water sources.

A connected road network with 1.64 miles of road per square mile makes the unit accessible and straightforward to navigate. However, private land ownership at 98.4% severely restricts where hunters can legally access. Major highways provide exterior access, but interior hunting requires permission or public easements.

The flat terrain and open country mean roads don't provide much concealment—spot-and-stalk hunting is visible from distance. The combination of high accessibility and limited public land creates a paradox: easy to reach but limited legal hunting ground.

Unit 36A encompasses roughly 800 square miles of south-central South Dakota prairie surrounding Pierre. The Missouri River system defines much of the unit's character, with Lake Arikara, Swanson Lake, and Woodruff Lake providing major water features. The unit stretches across predominantly private grassland with minimal public access, making route planning critical.

The landscape sits entirely in the Great Plains with no significant topographic relief, creating a landscape of broad vistas and distant horizons typical of upper Missouri River breaks country.

Water is abundant in this unit, which is unusual for Great Plains country. The Missouri River forms the primary drainage, with major reservoirs providing reliable water year-round. Lake Arikara, Swanson Lake, and Woodruff Lake are significant features supporting wildlife and offering glassing opportunities.

Numerous creeks including Joe Creek, Chapelle Creek, and Medicine Knoll Creek provide secondary drainages. Springs occur throughout, particularly Arrowhead Spring and associated seeps. This water abundance shapes animal movement patterns and hunting strategy significantly.

Unit 36A is pronghorn country on open prairie grassland. The flat terrain and sparse cover mean long-range glassing from roads and high points offers the primary hunting approach. Water sources at reservoirs and creek crossings concentrate animals, particularly during dry periods.

Early season hunting focuses on prairie basins, while cooler months may push animals toward creek drainages for cover. The open character demands patience and careful movement—pronghorn see movement from great distance. Success depends on locating animals from distance, planning stalk routes using draws and low spots, and executing careful final approach.

Most hunters will need private land access or public easements to have meaningful hunting opportunity.