How high is the St. Marys River at Main St. at Fort Wayne, IN right now?

The St. Marys River at Main St. at Fort Wayne, IN is currently flowing at 495 cubic feet per second with a gage height of 8.45 feet, based on the most recent USGS instantaneous reading.

Is the flow on the St. Marys River at Main St. at Fort Wayne, IN normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 58th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the St. Marys River at Main St. at Fort Wayne, IN on June 11?

The long-term median discharge for this date is 205 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 68 to unavailable cfs.

Where is the St. Marys River at Main St. at Fort Wayne, IN stream gauge located?

The St. Marys River at Main St. at Fort Wayne, IN stream gauge is operated by the USGS in Allen County, IN on the St. Marys River. USGS site number 04182769 (coordinates 41.0786, -85.1544).

St. Marys River at Main St. at Fort Wayne, IN

USGS Site No: 04182769 • St. Marys River • Allen County, IN

St. Marys River at Main St. at Fort Wayne, IN on the St. Marys River is currently at 495 cfs (Normal — 58th percentile for this date) . Gage height: 8.45 ft.

Reading from 1 week ago

↑ Upstream on St. Marys River

St. Marys River Near Fort Wayne, IN

495

CFS Discharge

8.45

Gage Height (ft)

Normal

Flow Condition

N/A

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	68
25th	Low threshold	130
50th (Median)	Normal (median)	205
75th	High threshold	1,130	Today: 495 cfs
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	728	—
May 27, 2026	818	—
May 26, 2026	862	—
May 25, 2026	1,060	—
May 24, 2026	1,490	—
May 23, 2026	1,440	—
May 22, 2026	683	—
May 21, 2026	692	—
May 20, 2026	497	—
May 19, 2026	357	—
May 18, 2026	275	—
May 17, 2026	277	—
May 16, 2026	323	—
May 15, 2026	388	—
Apr 21, 2026	635	—
Apr 20, 2026	2,460	—
Apr 19, 2026	3,150	—
Apr 18, 2026	2,840	—
Apr 17, 2026	2,850	—
Apr 16, 2026	3,000	—
Apr 15, 2026	455	—
Apr 14, 2026	228	—
Apr 13, 2026	311	—
Apr 12, 2026	386	—
Apr 11, 2026	571	—
Apr 10, 2026	2,030	—
Apr 9, 2026	3,210	—
Apr 8, 2026	4,070	—
Apr 7, 2026	5,600	—
Apr 6, 2026	7,200	—

Station Information

USGS Site No: 04182769
State: IN
County: Allen County
Coordinates: 41.0786, -85.1544
Drainage Area: 823 mi²
Datum (ft): 734.5
HUC Code: 04100004

View on USGS NWIS →

Recent Extremes

Max discharge: 9,010 cfs

Apr 4, 2026
Min discharge: 18 cfs

Oct 6, 2025

Computed from the local daily-values archive.

Nearby Gauges

Spy Run Creek Near Park Drive at Fort Wayne, IN
1.8 mi · 5 cfs

Normal
Maumee River at Fort Wayne, IN
2.1 mi · 780 cfs

Normal
St. Joseph River at Parnell Av at Fort Wayne, IN
2.6 mi · 0 cfs

Unknown
Maumee River at Coliseum Blvd at Fort Wayne, IN
3.5 mi · 925 cfs

Normal
St. Marys River Near Fort Wayne, IN
6.7 mi · 409 cfs

Normal