Allegheny River at Port Allegany, PA

USGS Site No: 03007800 • Allegheny River • McKean County, PA

Allegheny River at Port Allegany, PA on the Allegheny River is currently at 395 cfs (Normal — 65th percentile for this date) . Gage height: 3.51 ft.

Reading from

Downstream on Allegheny River ↓
Allegheny River at Eldred, PA
395
CFS Discharge
3.51
Gage Height (ft)
Normal
Flow Condition
N/A
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 28 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 41
25th Low threshold 87
50th (Median) Normal (median) 177
75th High threshold 538 Today: 395 cfs
95th Very High threshold 1,740

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.

3.5k 1.8k 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 467 —
May 27, 2026 511 —
May 26, 2026 512 —
May 25, 2026 526 —
May 24, 2026 378 —
May 23, 2026 364 —
May 22, 2026 241 —
May 21, 2026 282 —
May 20, 2026 317 —
May 19, 2026 355 —
May 18, 2026 403 —
May 17, 2026 463 —
May 16, 2026 527 —
May 15, 2026 613 —
Apr 21, 2026 954 —
Apr 20, 2026 1,050 —
Apr 19, 2026 1,170 —
Apr 18, 2026 990 —
Apr 17, 2026 1,030 —
Apr 16, 2026 929 —
Apr 15, 2026 618 —
Apr 14, 2026 497 —
Apr 13, 2026 491 —
Apr 12, 2026 548 —
Apr 11, 2026 643 —
Apr 10, 2026 711 —
Apr 9, 2026 826 —
Apr 8, 2026 1,000 —
Apr 7, 2026 1,280 —
Apr 6, 2026 1,460 —

Station Information

USGS Site No
03007800
State
PA
County
McKean County
Coordinates
41.8187, -78.2928
Drainage Area
248 mi²
Datum (ft)
1,454.4
HUC Code
05010001
View on USGS NWIS →

Recent Extremes

Max discharge
3,400 cfs
Mar 8, 2026
Min discharge
12 cfs
Sep 21, 2025

Computed from the local daily-values archive.

Nearby Gauges

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