Unuk River below Blue River near Wrangell AK

USGS Site No: 15015595 • Unuk River • Ketchikan Gateway Borough, AK

Unuk River below Blue River near Wrangell AK on the Unuk River is currently at 7,700 cfs (Very High — 95th percentile for this date) . Gage height: 28.12 ft.

Reading from

7,700
CFS Discharge
28.12
Gage Height (ft)
Very High
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 2,760
25th Low threshold 2,900
50th (Median) Normal (median) 3,260
75th High threshold 4,640
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.

5.1k 2.5k 0 cfs Feb 9 Apr 17
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
Apr 17, 2026 1,910 —
Apr 14, 2026 1,970 —
Apr 13, 2026 2,070 —
Apr 9, 2026 1,670 —
Apr 6, 2026 1,720 —
Apr 5, 2026 1,460 —
Apr 4, 2026 1,390 —
Apr 3, 2026 1,310 —
Apr 1, 2026 1,260 —
Mar 6, 2026 2,350 —
Mar 5, 2026 2,000 —
Mar 4, 2026 1,890 —
Mar 3, 2026 1,880 —
Mar 2, 2026 1,860 —
Mar 1, 2026 1,880 —
Feb 28, 2026 1,870 —
Feb 27, 2026 1,920 —
Feb 26, 2026 2,020 —
Feb 25, 2026 2,100 —
Feb 24, 2026 2,040 —
Feb 21, 2026 2,220 —
Feb 20, 2026 2,390 —
Feb 16, 2026 2,770 —
Feb 15, 2026 3,050 —
Feb 14, 2026 3,300 —
Feb 13, 2026 3,820 —
Feb 12, 2026 4,220 —
Feb 11, 2026 3,960 —
Feb 10, 2026 4,110 —
Feb 9, 2026 4,700 —

Station Information

USGS Site No
15015595
State
AK
Coordinates
56.2406, -130.8803
Drainage Area
745 mi²
Datum (ft)
174.0
HUC Code
190101050403
View on USGS NWIS →

Recent Extremes

Max discharge
18,300 cfs
Aug 12, 2025
Min discharge
1,260 cfs
Apr 1, 2026

Computed from the local daily-values archive.

Nearby Gauges