How high is the Big Sioux River at Akron, IA right now?

The Big Sioux River at Akron, IA is currently flowing at 1,430 cubic feet per second with a gage height of 7.08 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Big Sioux River at Akron, IA normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 51th percentile compared to the long-term historical record at this gauge.

Is the Big Sioux River at Akron, IA at flood stage?

No — the gage height is 8.92 feet below the NWS flood-stage threshold of 16.0 feet.

What is the historical median flow for the Big Sioux River at Akron, IA on June 11?

The long-term median discharge for this date is 1,350 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 255 to 7,230 cfs.

Where is the Big Sioux River at Akron, IA stream gauge located?

The Big Sioux River at Akron, IA stream gauge is operated by the USGS in Plymouth County, IA on the Big Sioux River. USGS site number 06485500 (coordinates 42.8375, -96.5619).

Big Sioux River at Akron, IA

USGS Site No: 06485500 • Big Sioux River • Plymouth County, IA

Big Sioux River at Akron, IA on the Big Sioux River is currently at 1,430 cfs (Normal — 51th percentile for this date) . Gage height: 7.08 ft.

Reading from 1 week ago

Downstream on Big Sioux River ↓

Big Sioux River at Sioux City, IA

1,430

CFS Discharge

7.08

Gage Height (ft)

Normal

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	255
25th	Low threshold	536
50th (Median)	Normal (median)	1,350
75th	High threshold	3,440	Today: 1,430 cfs
95th	Very High threshold	7,230

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	1,600	7.48
May 27, 2026	1,800	7.94
May 26, 2026	1,520	7.27
May 25, 2026	1,300	6.74
May 24, 2026	1,210	6.51
May 23, 2026	1,170	6.42
May 22, 2026	1,150	6.37
May 21, 2026	1,200	6.48
May 20, 2026	1,330	6.81
May 19, 2026	1,300	6.74
May 18, 2026	1,200	6.48
May 17, 2026	1,010	6.00
May 16, 2026	999	5.98
May 15, 2026	1,020	6.04
Apr 20, 2026	1,030	6.05
Apr 19, 2026	1,060	6.14
Apr 18, 2026	1,050	6.12
Apr 17, 2026	1,050	6.11
Apr 16, 2026	1,100	6.24
Apr 15, 2026	1,100	6.23
Apr 14, 2026	1,110	6.26
Apr 13, 2026	1,120	6.30
Apr 12, 2026	1,120	6.31
Apr 11, 2026	1,130	6.32
Apr 10, 2026	1,150	6.38
Apr 9, 2026	1,160	6.41
Apr 8, 2026	1,160	6.41
Apr 7, 2026	1,150	6.39
Apr 6, 2026	1,110	6.30
Apr 5, 2026	1,050	6.16

Station Information

USGS Site No: 06485500
State: IA
County: Plymouth County
Coordinates: 42.8375, -96.5619
Drainage Area: 7,879 mi²
Datum (ft): 1,119.5
HUC Code: 10170203

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 14.0 ft
Flood Stage: 16.0 ft
Moderate Flood: 18.0 ft
Major Flood: 20.0 ft

Currently 8.92 ft below flood stage.

Recent Extremes

Max discharge: 3,800 cfs

Jul 6, 2025
Min discharge: 642 cfs

May 19, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Perry Creek Near Millnerville, IA
13.9 mi · 3 cfs

Low
Big Sioux River Near Jefferson, SD
14.8 mi · 1,830 cfs

Normal
Big Sioux River Near Hawarden, IA
15.2 mi · 1,250 cfs

Normal
Vermillion River Near Vermillion,sd
18.4 mi · 86 cfs

Low
West Branch Floyd River Near Struble, IA
20.4 mi · 159 cfs

High