2020 Map of Chelsea

About this map

The settlement of Chelsea sits along the northern banks of the Missouri River in Roosevelt County, where the water bifurcates around Chelsea Island and the Chelsea Slough. This modern survey reveals a landscape defined by its riparian geometry and the vast ranching and agricultural tracts typical of the Poplar District. Near the confluence of Boxelder Cr and the Missouri, local history is anchored by the Saint Ann's Cem and Boxelder Cem, providing a window into the lineage of the local families and the tribal communities of the Fort Peck Reservation. The terrain is marked by the winding courses of Chelsea Cr and Little Badger Cr, which carve through the plains to the north. A network of Bureau of Indian Affairs routes and rural roads, including Bia Rte 1 and Red Thunder Rd, connect the scattered homesteads and cemetery sites across the township sections.