Fall River (South Dakota)

Fall River is a river in Fall River County, South Dakota, United States. Formed by the confluence of Hot Brook and Cold Brook in the city of Hot Springs, the river flows eastward for approximately 15 miles (24 km) before joining the Cheyenne River. The river gave its name to Fall River County and is known for its relatively steep gradient compared to many streams in the surrounding Great Plains. :contentReference[oaicite:0]{index=0}

The river is spring-fed in its upper reaches, with warm mineral waters from Hot Springs contributing to a stable flow throughout much of the year. Flowing through canyons, grasslands, and riparian woodlands, the Fall River provides important habitat for fish, birds, and other wildlife. As a tributary of the Cheyenne River, it forms part of the larger Missouri River watershed. :contentReference[oaicite:1]{index=1}

Fall River supports a variety of warmwater fish species. Anglers commonly catch Smallmouth Bass (Micropterus dolomieu), Channel Catfish (Ictalurus punctatus), Black Bullhead (Ameiurus melas), Common Carp (Cyprinus carpio), White Sucker (Catostomus commersonii), Longnose Dace (Rhinichthys cataractae), and several species of minnows and sunfish. The river is also popular for fly fishing and light tackle angling in its clearer upper reaches. :contentReference[oaicite:2]{index=2}

Although relatively short, Fall River is an important natural feature of southwestern South Dakota. Its scenic setting, stable spring-fed flow, and productive fish populations make it a valuable recreational and ecological resource within the Cheyenne River basin.