How high is the Grand River at Ionia, MI right now?

The Grand River at Ionia, MI is currently flowing at 1,850 cubic feet per second with a gage height of 10.07 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Grand River at Ionia, MI normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 64th percentile compared to the long-term historical record at this gauge.

Is the Grand River at Ionia, MI at flood stage?

No — the gage height is 10.93 feet below the NWS flood-stage threshold of 21.0 feet.

What is the historical median flow for the Grand River at Ionia, MI on June 11?

The long-term median discharge for this date is 1,470 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 701 to 4,080 cfs.

Where is the Grand River at Ionia, MI stream gauge located?

The Grand River at Ionia, MI stream gauge is operated by the USGS in Ionia County, MI on the Grand River. USGS site number 04116000 (coordinates 42.9720, -85.0692).

Grand River at Ionia, MI

USGS Site No: 04116000 • Grand River • Ionia County, MI

Grand River at Ionia, MI on the Grand River is currently at 1,850 cfs (Normal — 64th percentile for this date) . Gage height: 10.07 ft.

Reading from 1 week ago

↑ Upstream on Grand River

Grand River at Portland, MI

Downstream on Grand River ↓

Grand River at Grand Rapids, MI

1,850

CFS Discharge

10.07

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	701
25th	Low threshold	1,030
50th (Median)	Normal (median)	1,470
75th	High threshold	2,170	Today: 1,850 cfs
95th	Very High threshold	4,080

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 29, 2026	1,920	—
May 28, 2026	2,070	—
May 27, 2026	2,230	—
May 26, 2026	2,290	—
May 25, 2026	2,220	—
May 24, 2026	1,770	—
May 23, 2026	1,590	—
May 22, 2026	1,630	—
May 21, 2026	1,750	—
May 20, 2026	1,900	—
May 19, 2026	1,900	—
May 18, 2026	1,890	—
May 17, 2026	1,990	—
May 16, 2026	2,040	—
May 15, 2026	2,040	—
Apr 21, 2026	12,600	—
Apr 20, 2026	14,200	—
Apr 19, 2026	15,400	—
Apr 18, 2026	15,800	—
Apr 17, 2026	14,700	—
Apr 16, 2026	11,600	—
Apr 15, 2026	8,050	—
Apr 14, 2026	7,060	—
Apr 13, 2026	7,570	—
Apr 12, 2026	8,350	—
Apr 11, 2026	9,450	—
Apr 10, 2026	10,600	—
Apr 9, 2026	12,300	—
Apr 8, 2026	14,300	—
Apr 7, 2026	16,600	—

Station Information

USGS Site No: 04116000
State: MI
County: Ionia County
Coordinates: 42.9720, -85.0692
Drainage Area: 2,840 mi²
Datum (ft): 614.6
HUC Code: 04050006

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 13.5 ft
Flood Stage: 21.0 ft
Moderate Flood: 23.0 ft
Major Flood: 25.0 ft

Currently 10.93 ft below flood stage.

Recent Extremes

Max discharge: 17,900 cfs

Apr 6, 2026
Min discharge: 324 cfs

Sep 20, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Grand River at Portland, MI
11.3 mi · 965 cfs

Normal
Flat River at Smyrna, MI
11.4 mi · 0 cfs

Unknown
Looking Glass River Near Eagle, MI
18.6 mi · 126 cfs

Normal
Fish Creek Near Crystal, MI
19.7 mi · 25 cfs

Normal
Maple River at Maple Rapids, MI
21.2 mi · 177 cfs

Normal