South Dakota River Flow Rates & Stream Gauge Data

Live USGS stream gauge data for South Dakota — current CFS flow rates, gauge heights, water temperatures, and wading conditions for South Dakota rivers and streams. Updated every 15 minutes. Know before you go.

Planning with South Dakota river conditions

Browse USGS monitoring stations across South Dakota rivers and streams. Each gauge page shows current readings plus 7, 14, and 30-day flow-rate charts with condition indicators. Compare the station name and location with your intended reach, then use the recent trend alongside the current reading. Rain, snowmelt, dams, tributaries, and the distance between stations can produce different conditions on the same river.

Plan seasonal fly selection with the South Dakota hatch chart.