Allegheny River at Lock & Dam 6 at Clinton water level

Name: Allegheny River at Lock & Dam 6 at Clinton water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Allegheny River, Pennsylvania, United States

Directions

High for mid-October

Water level

10.36ft Up 0.29 ft over the last 24 hours

Measured Oct 20, 2026, 09:00 AM EDT (29 min ago)

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %) Forecast Minor flood stage

The forecast expects the river to fall to 9.70 ft by Tuesday, October 20 at 08:00 AM. Issued Monday, October 19 at 09:09 AM by NOAA National Weather Service.

What this means

High water at Allegheny River at Lock & Dam 6 at Clinton: the latest reading is 10.36 ft, above normal for mid-October.

That puts it 0.64 ft above the median of 9.72 ft for mid-October, based on 9 years of readings. It is 10.64 ft below the flood stage of 21.00 ft. A year ago it stood at 9.68 ft (+0.68 ft).

It is on the way up, by 0.29 ft over the past 24 hours. The forecast expects the river to fall to 9.70 ft by Tuesday, October 20 at 08:00 AM. If the rise continues, low-lying paths and riverside parking can go under water. The 30-day range is 9.66 ft – 11.01 ft.

Compared with 9 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 9.72 ft0.64 ft above the median for this date
Normal for this date: 9.57 ft – 10.80 ft8 years in 10 fall in this range (9 years of records)
Same day last year: 9.68 ft+0.68 ft
Lowest and highest in 30 days: 9.66 ft – 11.01 ft
Lowest and highest in 12 months: 9.64 ft – 15.18 ft
Highest on record: 26.40 ftMarch 18, 1936
Forecast peak: 9.70 ftTuesday, October 20 at 08:00 AM

Paddling and fishing conditions

Above-normal flows push fish to the edges and make wading risky. Wait for the river to drop and clear.

For reference, flood stage is 21.00 ft.

What happens at each level

26.40 ft: Water reaches the bottom of the first floor window of the powerhouse at Lock 6.
23.00 ft: Top of rail of the Pennsylvania Railroad across the river from the lock floods.
19.00 ft: Lock walls overtopped.
17.00 ft: Navigation suspended, lock out of service.
10.36 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: < 5 %.

Rank	Level	Date
1	26.40 ft	March 18, 1936
2	22.00 ft	June 23, 1972
3	20.30 ft	September 18, 2004
4	19.80 ft	March 16, 2007
5	19.20 ft	December 31, 1990
6	17.90 ft	February 8, 2019
7	16.20 ft	March 23, 2007

Weather at the gauge

No rain in the last 3 days.

20 Tue 65° 38° – Wind 5 mph

21 Wed 62° 38° – Wind 3 mph

22 Thu 65° 39° – Wind 5 mph

23 Fri 62° 43° – Wind 6 mph

24 Sat 64° 39° – Wind 5 mph

25 Sun 67° 42° – Wind 5 mph

26 Mon 67° 47° – Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:35 AM Sunset 06:32 PM Daylight 10 hr, 57 min First quarter 68%

Map

Other gauges on the Allegheny River

Gauge	Level	Compared with normal	24 hours	Distance
Allegheny River at Kinzua DamRiver gauge, Allegheny River	2,310 cfs	Normal	±0	83 mi
Allegheny River below Conewango Creek at WarrenRiver gauge, Allegheny River	3.19 ft	Below flood stage	−0.01 ft	81 mi
Allegheny River at West HickoryRiver gauge, Allegheny River	3.89 ft	Below flood stage	−0.01 ft	60 mi
Allegheny River at FranklinRiver gauge, Allegheny River	3.52 ft	Below flood stage	+0.02 ft	48 mi
Allegheny River at ParkerRiver gauge, Allegheny River	2.63 ft	Below flood stage	+0.01 ft	27 mi
Allegheny River near RimerRiver gauge, Allegheny River	9.39 ft	Normal	±0	17 mi
Allegheny River at Lock & Dam 8 near TempletonRiver gauge, Allegheny River	10.28 ft	Very high	+0.74 ft	13 mi
Allegheny River at KittanningRiver gauge, Allegheny River	10.15 ft	Below flood stage	−0.44 ft	8 mi
Allegheny River below Lock & Dam 6 at ClintonRiver gauge, Allegheny River	9.64 ft	Normal	−0.27 ft	0.1 mi
Allegheny River at Lock & Dam 5 near FreeportRiver gauge, Allegheny River	9.70 ft	Low	−0.42 ft	5.0 mi
Allegheny River below Lock & Dam 5 near FreeportRiver gauge, Allegheny River	11.20 ft	Normal	+0.12 ft	5.1 mi
Allegheny River at NatronaRiver gauge, Allegheny River	11.22 ft	Below flood stage	+0.10 ft	10 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Crooked Creek at Crooked Creek Dam near Ford CityRiver gauge, Crooked Creek	2.24 ft	Below flood stage	−0.96 ft	3.7 mi
Crooked Creek Lake near Ford CityLake, Crooked Creek Lake	844.17 ft	High	−0.43 ft	3.8 mi
Buffalo Creek at Iron BridgeRiver gauge, Buffalo Creek	108 cfs	Very high	−11.0 cfs	5.2 mi
Allegheny River (lower pool) at KittanningRiver gauge, Allegheny River (lower pool)	10.58 ft	Normal	+0.19 ft	7 mi
Kiskiminetas River at VandergriftRiver gauge, Kiskiminetas River	5.83 ft	Below flood stage	−0.46 ft	8 mi

Questions and answers

How does the Allegheny River at Lock & Dam 6 at Clinton compare with last year?

It is 0.68 ft higher than on the same day last year, when the reading was 9.68 ft.

What is flood stage for the Allegheny River at Lock & Dam 6 at Clinton?

The official flood stage is 21.00 ft. The level is currently 10.64 ft below it.

What is a normal level for the Allegheny River at Lock & Dam 6 at Clinton in mid-October?

The median for mid-October is 9.72 ft. In 8 years out of 10 the reading falls between 9.57 ft and 10.80 ft, based on 9 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Allegheny River at Lock & Dam 6 at Clinton today?

On Oct 20, 2026, 09:00 AM EDT, the water level was 10.36 ft. Up 0.29 ft over the last 24 hours.

Is Allegheny River at Lock & Dam 6 at Clinton rising or falling?

Up 0.29 ft over the last 24 hours. Up 0.32 ft over the last 7 days.

Is the level of Allegheny River at Lock & Dam 6 at Clinton normal?

High for mid-October. Compared with 9 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:03039035 (Agency page)
Coordinates: 40.71667, -79.58111 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	10.36 ft	2026-10-20 13:00	Provisional

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How to cite

U.S. Geological Survey: Allegheny River at Lock & Dam 6 at Clinton (usgs:03039035). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/pennsylvania/allegheny-river-at-lock-and-dam-6-at-clinton

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer