Weekly swim report · August 21, 2026
South Dakota swim report
On August 21, 2026 the warmest USGS water reading in South Dakota was 74°F at CHEYENNE RIVER AT RED SHIRT, SD; no water-related NWS hazards are active.
Warmest water
The warmest of 1 sensor reporting a water temperature in South Dakota today. Station names open the official monitoring page.
- #1CHEYENNE RIVER AT RED SHIRT, SDUSGS gauge · 44 ft³/s74°F 23°C8 hrs ago
Active hazards in South Dakota
No water-related NWS hazards are active in South Dakota right now. Checked live against the National Weather Service alert feed.
Where to swim in South Dakota
The most-reviewed, well-rated water destinations in South Dakota — check each one’s live conditions before you go.
Get this report every Thursday
The warmest water in South Dakota and every state, active water hazards, and where to swim this weekend — once a week. No spam — unsubscribe anytime.
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.