2024 Map of Wallrock

About this map

Sedan and the small settlement of Wallrock serve as the primary human touchpoints in this high-elevation landscape along the border of Gallatin and Park Counties. The terrain is defined by dramatic drainage systems, where the Middle Fork, South Fork, and North Fork Muddy Creek converge into a broader valley. To the west, the protected lands of the Gallatin National Forest rise toward Elkhorn Ridge, while the eastern portion is characterized by the expansive Wallrock Basin. The local road network, including Reservoir Rd and Big Muddy Creek Rd, follows the natural contours of the creeks, illustrating how topography has dictated rural development in this part of Montana. Water sources like Dry Creek and Rice Creek further detail the complex hydrology that supports the region's ranching and wilderness character.