2024 Map of Uhlan Coulee

About this map

St. Marie sits at the northern edge of this high plains landscape, where the Missouri River watershed is defined by intricate drainage networks. The terrain is dominated by the deep incisions of Uhlan Coulee and Johnson Coulee, which channel seasonal runoff through the arid breaks of Valley County. To the south, the broad floor of Porcupine Valley provides a distinct contrast to the dissected uplands, fed by the winding courses of Porcupine Creek and the East Fork Cherry Creek. Scattered water sources like Hermans Spring and Ericson Spring represent vital landmarks in this prairie environment. The road network, including Nyquist Rd and Sargent Creek Rd, follows the section lines and natural contours, reflecting the persistent grid of the Public Land Survey System across the rural Montana interior.