2024 Map of Nelson Island

About this map

Nelson Island lies at a significant bend of the Missouri River in this part of Cascade County, where the river winds through a landscape defined by seasonal creek drainages and small ranching communities. The map details the transition from the river valley to higher ground, noting established locales such as Ulm and Riverdale. Significant local history is preserved in the placement of Castner Falls Cem, situated east of the river near Baker Rd. The road network, including Old Ulm Cascade Rd and Old US Hwy 91, reflects the long-standing transportation corridors that followed the river's path. Settled areas like Chestnut Valley and Lower Chestnut Valley indicate the early agricultural and social centers of the region, while naming conventions for features like Bird Creek and Geyser Creek highlight the importance of water resources in this Montana landscape.