2014 Map of Rocky Reef

About this map

The Missouri River carves through the northern reaches of this landscape, its path accompanied by the Tintinger Slough and the wide, open expanse of Antelope Flat. This terrain is defined by the significant elevation change between the river valley and the heights of Harris Mtn and the namesake Rocky Reef prominence. The agricultural history of the region is evident in the extensive engineering of the Chestnut Valley Canal, which skirts the base of the hills to bring water to the lower fields near the community of Chestnut Valley. Local transit and settlement patterns are anchored by Old US 91 and the Chestnut Valley Cem, providing key points of interest for genealogists tracing families in this part of Cascade County. Numerous drainages such as Cherry Coulee, Sawmill Cr, and Bird Cr dissect the southern highlands, illustrating the complex watershed feeding into the Missouri.