How high is the Iowa River at Columbus Junction, IA right now?

The Iowa River at Columbus Junction, IA is currently flowing at 9,630 cubic feet per second with a gage height of 12.20 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Iowa River at Columbus Junction, IA normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 43th percentile compared to the long-term historical record at this gauge.

Is the Iowa River at Columbus Junction, IA at flood stage?

No — the gage height is 10.80 feet below the NWS flood-stage threshold of 23.0 feet.

What is the historical median flow for the Iowa River at Columbus Junction, IA on June 11?

The long-term median discharge for this date is 11,100 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 0 to unavailable cfs.

Where is the Iowa River at Columbus Junction, IA stream gauge located?

The Iowa River at Columbus Junction, IA stream gauge is operated by the USGS in Louisa County, IA on the Iowa River. USGS site number 05465100 (coordinates 41.2784, -91.3468).

Iowa River at Columbus Junction, IA

USGS Site No: 05465100 • Iowa River • Louisa County, IA

Iowa River at Columbus Junction, IA on the Iowa River is currently at 9,630 cfs (Normal — 43th percentile for this date) . Gage height: 12.20 ft.

Reading from 1 week ago

↑ Upstream on Iowa River

Iowa River Near Lone Tree, IA

Downstream on Iowa River ↓

Iowa River at Wapello, IA

9,630

CFS Discharge

12.20

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	0
25th	Low threshold	6,150
50th (Median)	Normal (median)	11,100	Today: 9,630 cfs
75th	High threshold	17,600
95th	Very High threshold	0

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	10,200	12.41
May 27, 2026	10,700	12.58
May 26, 2026	11,700	12.88
May 25, 2026	12,700	13.23
May 24, 2026	13,200	13.38
May 23, 2026	13,400	13.45
May 22, 2026	13,600	13.49
May 21, 2026	13,800	13.57
May 20, 2026	12,900	13.26
May 19, 2026	9,640	12.21
May 18, 2026	8,710	11.87
May 17, 2026	8,510	11.80
May 16, 2026	8,680	11.86
May 15, 2026	8,880	11.93
Apr 20, 2026	31,500	18.20
Apr 19, 2026	31,100	18.10
Apr 18, 2026	31,800	18.28
Apr 17, 2026	32,000	18.34
Apr 16, 2026	29,200	17.64
Apr 15, 2026	26,500	16.94
Apr 14, 2026	28,100	17.36
Apr 13, 2026	30,000	17.83
Apr 12, 2026	34,200	18.87
Apr 11, 2026	34,500	18.93
Apr 10, 2026	31,000	18.09
Apr 9, 2026	27,700	17.25
Apr 8, 2026	25,200	16.63
Apr 7, 2026	22,700	16.02
Apr 6, 2026	19,000	15.05
Apr 5, 2026	16,200	14.28

Station Information

USGS Site No: 05465100
State: IA
County: Louisa County
Coordinates: 41.2784, -91.3468
Drainage Area: 12,261 mi²
Datum (ft): 557.8
HUC Code: 07080209

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 19.0 ft
Flood Stage: 23.0 ft
Moderate Flood: 25.0 ft
Major Flood: 26.5 ft

Currently 10.80 ft below flood stage.

Recent Extremes

Max discharge: 38,100 cfs

Aug 1, 2025
Min discharge: 1,570 cfs

Dec 15, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Cedar River Near Conesville, IA
9.5 mi · 5,790 cfs

Normal
Iowa River at Wapello, IA
11.0 mi · 9,390 cfs

Normal
Iowa River Near Lone Tree, IA
12.2 mi · 3,580 cfs

Normal
Iowa River at Oakville, IA
19.1 mi · 9,630 cfs

Low
Edwards River Near New Boston, IL
20.7 mi · 152 cfs

Normal