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Iowa · Unknown Co.

Big Sioux River

· 133 mi · Class
Optimal: 1350–4100 CFS · USGS #06483950
2,739 avg
1,430CFS
13.31 ft gauge height
Optimal
↓Falling slowly (-20 cfs/hr)(-50 in 3h)
⚡Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 2,739 cfsHist. median: 0 cfsUSGS #06483950
Designated Water Trail · State

About

Averaging 2,739 CFS through 133 miles of designated water trail, the Big Sioux River runs optimal flows between 1,350 and 4,100 CFS on USGS gauge 06483950. The Jay Heath Canoe and Kayak Trail provides developed access along the corridor. State designation as a water trail maintains public access and basic facilities for paddlers working this substantial prairie river system.

Solunar Fishing Activity
🌖
Waning Gibbous
88% illumination
Poor
★ Moon overhead
8:52 AM
Moonrise
4:31 AM
Moonset
1:14 PM
★ Moon underfoot
8:52 PM
Next full moon: Jun 2926 days
10-Year Flow Patterns
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Your Optimal Range
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Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.

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