St. Marys River at Pleasant Mills, IN

USGS Site No: 04181120 • St. Marys River • Adams County, IN

St. Marys River at Pleasant Mills, IN on the St. Marys River is currently at 342 cfs (Very High — 95th percentile for this date) . Gage height: 6.50 ft.

Reading from

Downstream on St. Marys River ↓
St. Marys River at Decatur, IN
342
CFS Discharge
6.50
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 0
25th Low threshold 91
50th (Median) Normal (median) 100
75th High threshold 233
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.

1.8k 880 0 cfs Apr 7 May 29
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 29, 2026 322 —
May 28, 2026 422 —
May 27, 2026 576 —
May 26, 2026 624 —
May 25, 2026 624 —
May 24, 2026 716 —
May 23, 2026 726 —
May 22, 2026 547 —
May 21, 2026 487 —
May 20, 2026 362 —
May 19, 2026 139 —
May 18, 2026 114 —
May 17, 2026 134 —
May 16, 2026 160 —
May 15, 2026 189 —
Apr 21, 2026 251 —
Apr 20, 2026 387 —
Apr 19, 2026 667 —
Apr 18, 2026 780 —
Apr 17, 2026 744 —
Apr 16, 2026 891 —
Apr 15, 2026 832 —
Apr 14, 2026 175 —
Apr 13, 2026 151 —
Apr 12, 2026 184 —
Apr 11, 2026 250 —
Apr 10, 2026 371 —
Apr 9, 2026 614 —
Apr 8, 2026 1,010 —
Apr 7, 2026 1,630 —

Station Information

USGS Site No
04181120
State
IN
County
Adams County
Coordinates
40.7794, -84.8424
Drainage Area
554 mi²
Datum (ft)
766.9
HUC Code
04100004
View on USGS NWIS →

Recent Extremes

Max discharge
3,310 cfs
May 7, 2025
Min discharge
20 cfs
Sep 23, 2025

Computed from the local daily-values archive.

Nearby Gauges

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