Big Sioux River at Akron, IA

Plymouth County, Iowa · USGS gauge 06485500 · NWS AKRI4 · Big Sioux River flood status · Iowa river levels

Is Big Sioux River at Akron, IA flooding right now?

Big Sioux River at Akron, IA measured 6.39 ft on 2026-09-11 01:00:00 UTC. That observation was 9.6 ft below its 16 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height

6.39 ft

as of 70 min ago

Streamflow

944 cfs

data refreshed 8 min ago

Minor flooding here begins at 16 ft, with major flooding at 20 ft. The highest crest on record was 27.35 ft on Sat, Jun 22, 2024.

Streamflow outlook

NOAA National Water Model forecast, issued 14 hours ago. The NWM models discharge for every river reach in the country, including the many gauges the National Weather Service does not forecast individually. It is a model, not an official NWS river forecast, and it predicts flow rather than water level.

Flood stages at this gauge

Category	Stage	Current distance
Action	14 ft	7.6 ft below
Minor flood	16 ft	9.6 ft below
Moderate flood	18 ft	11.6 ft below
Major flood	20 ft	13.6 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

Stage	Date
27.35 ft	2024-06-22
25.46 ft	2014-06-18
23.94 ft	2019-03-16
23.45 ft	2018-06-23
23.38 ft	2001-04-26

Nearby gauges

Gauge	Distance	County
Brule Creek near Elk Point SD	6.6 mi	Union County
Perry Creek near Millnerville, IA	13.9 mi	Plymouth County
Big Sioux River near Jefferson, SD	14.8 mi	Union County
Big Sioux River near Hawarden, IA	15.2 mi	Union County
Perry Creek near Hinton, IA	17.8 mi	Plymouth County

Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast