HD 630 covers the lower Powder River country and the surrounding prairie-and-breaks running northeast from Broadus toward the Yellowstone River and the Powder River-Mizpah Creek divide. Elevations run from about 2,800 feet on the river bottoms to 3,800 feet on the higher prairie ridges. The Powder River bottom is cottonwood gallery forest, willow thickets, and a slow sandy channel that has earned its "mile wide and an inch deep" reputation. Above the river the country is sage prairie, dryland wheat, CRP grass, and rolling sandstone-and-ponderosa pine breaks where the prairie drops into the river drainages. The Mizpah Creek drainage cuts through the western part of the unit and connects to the Custer NF Ashland District timber. Mule deer use the timbered breaks; whitetail are dense in the Powder River bottom; pronghorn on the open prairie; some elk move through from the Custer NF; turkeys (Merriam's) in the limited pine pockets. BLM tracts scatter through the breaks, DNRC state checkerboards, and the bulk is private ranchland—Powder River County is genuine ranch country. Block Management is essential and the BMAs along the Powder are decent. MT-59 is the principal paved access; secondary highways and county/section roads handle the rest. Broadus is the supply town with gas, the Powder River Manor, basic groceries, the courthouse. Miles City is north. Cell service holds in Broadus and weakens off MT-59. Section roads gumbo when wet. The whitetail rut along the Powder is the headline opportunity; mule deer in the breaks and pronghorn on the prairie round out the package.