St Marys River at Walcot Street at Willshire OH

USGS Site No: 04181049 • St. Marys River • Van Wert County, OH

St Marys River at Walcot Street at Willshire OH on the St. Marys River is currently at 372 cfs (Very High — 95th percentile for this date) . Gage height: 4.11 ft.

Reading from

↑ Upstream on St. Marys River
St. Marys River at Rockford OH
372
CFS Discharge
4.11
Gage Height (ft)
Very High
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 38
25th Low threshold 80
50th (Median) Normal (median) 90
75th High threshold 165
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.

2.1k 1k 0 cfs Apr 6 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 405 —
May 27, 2026 582 —
May 26, 2026 644 —
May 25, 2026 625 —
May 24, 2026 675 —
May 23, 2026 700 —
May 22, 2026 577 —
May 21, 2026 476 —
May 20, 2026 310 —
May 19, 2026 134 —
May 18, 2026 99 —
May 17, 2026 112 —
May 16, 2026 129 —
May 15, 2026 148 —
Apr 21, 2026 168 —
Apr 20, 2026 279 —
Apr 19, 2026 521 —
Apr 18, 2026 701 —
Apr 17, 2026 699 —
Apr 16, 2026 737 —
Apr 15, 2026 722 —
Apr 14, 2026 175 —
Apr 13, 2026 120 —
Apr 12, 2026 141 —
Apr 11, 2026 185 —
Apr 10, 2026 308 —
Apr 9, 2026 556 —
Apr 8, 2026 901 —
Apr 7, 2026 1,360 —
Apr 6, 2026 1,930 —

Station Information

USGS Site No
04181049
State
OH
County
Van Wert County
Coordinates
40.7489, -84.7892
Drainage Area
386 mi²
Datum (ft)
774.3
HUC Code
04100004
View on USGS NWIS →

Recent Extremes

Max discharge
2,420 cfs
Apr 5, 2026
Min discharge
13 cfs
Oct 22, 2025

Computed from the local daily-values archive.

Nearby Gauges

Related