Allegheny R at CW Bill Young L&D at Acmetonia water level

Name: Allegheny R at CW Bill Young L&D at Acmetonia 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 R, Pennsylvania, United States

Directions

High for late October

Water level

10.87ft Up 0.12 ft over the last 24 hours

Measured Oct 21, 2026, 12:45 AM EDT (42 min ago)

Water temperature: 59 °F

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 10.30 ft by Saturday, October 24 at 08:00 PM. Issued Tuesday, October 20 at 08:46 AM by NOAA National Weather Service.

What this means

The gauge at Allegheny R at CW Bill Young L&D at Acmetonia shows 10.87 ft, above normal for late October.

That puts it 0.68 ft above the median of 10.19 ft for late October, based on 11 years of readings. It is 6.13 ft below the flood stage of 17.00 ft. A year ago it stood at 10.18 ft (+0.69 ft).

The water is rising: up 0.12 ft over the past 24 hours. The forecast expects the river to fall to 10.30 ft by Saturday, October 24 at 08:00 PM. If the rise continues, low-lying paths and riverside parking can go under water.

The sensor also reports a water temperature of 59 °F.

Compared with 11 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 10.19 ft0.68 ft above the median for this date
Normal for this date: 9.99 ft – 11.28 ft8 years in 10 fall in this range (11 years of records)
Same day last year: 10.18 ft+0.69 ft
Lowest and highest in 30 days: 10.45 ft – 11.86 ft
Lowest and highest in 12 months: 10.11 ft – 14.46 ft
Highest on record: 31.10 ftMarch 18, 1936
Forecast peak: 10.70 ftTuesday, October 20 at 08:00 PM

What the stage means on the water

Fast, high water is not the time for casual paddling. Strainers, debris and cold water make an unplanned swim dangerous.

The National Weather Service puts flood stage for this gauge at 17.00 ft, still 6.13 ft away.

What happens at each level

22.70 ft: State Route 366 is flooded.
20.00 ft: Lock walls overtopped.
19.00 ft: Lock 3 ceases operations for navigation.
18.00 ft: Navigation suspended, lock out of service.
17.70 ft: Basement flooding begins in New Kensington.
10.87 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	31.10 ft	March 18, 1936
2	23.30 ft	December 30, 1942
3	21.40 ft	March 10, 1964
4	21.10 ft	January 22, 1959
5	20.90 ft	June 23, 1972
6	19.80 ft	September 18, 2004
7	19.20 ft	January 2, 1979
8	19.10 ft	January 20, 1996
9	18.60 ft	March 6, 1964
10	18.40 ft	April 9, 1987

Weather at the gauge

The forecast is not available right now.

Sunrise 07:37 AM Sunset 06:32 PM Daylight 10 hr, 55 min Waxing gibbous 74%

Map

Other gauges on the Allegheny R

Gauge	Level	Compared with normal	24 hours	Distance
Allegheny R at L&D 8 (lower pool) near TempletonRiver gauge, Allegheny R	10.58 ft	Normal	−0.02 ft	30 mi
Allegheny R at CW Bill Young (lower) AcmetoniaRiver gauge, Allegheny R	11.31 ft	Normal	+0.05 ft	0.1 mi
Allegheny R at Lock & Dam 2 at AspinwallRiver gauge, Allegheny R	10.91 ft	Normal	+0.03 ft	6 mi
Allegheny R at L&D 2 (lower pool) at AspinwallRiver gauge, Allegheny R	17.17 ft	High	+0.28 ft	6 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Little Pine Creek near EtnaRiver gauge, Little Pine Creek	2.53 ft	Below flood stage	−0.03 ft	7 mi
Allegheny River (lower pool) at NatronaRiver gauge, Allegheny River (lower pool)	11.04 ft	Normal	+0.17 ft	7 mi
Pine Creek at Grant Avenue at EtnaRiver gauge, Pine Creek	4.94 ft	High	−0.12 ft	7 mi
Allegheny River at NatronaRiver gauge, Allegheny River	11.35 ft	Below flood stage	+0.16 ft	7 mi
Thompson Run at Turtle CreekRiver gauge, Thompson Run	0.87 ft	Very high	−0.05 ft	9 mi
Girtys Run above Grant Avenue at MillvaleRiver gauge, Girtys Run	2.42 ft	Normal	−0.04 ft	9 mi
Turtle Creek at WilmerdingRiver gauge, Turtle Creek	5.34 ft	High	−0.08 ft	10 mi

Questions and answers

How does the Allegheny R at CW Bill Young L&D at Acmetonia compare with last year?

It is 0.69 ft higher than on the same day last year, when the reading was 10.18 ft.

What is flood stage for the Allegheny R at CW Bill Young L&D at Acmetonia?

The official flood stage is 17.00 ft. The level is currently 6.13 ft below it.

What is a normal level for the Allegheny R at CW Bill Young L&D at Acmetonia in late October?

The median for late October is 10.19 ft. In 8 years out of 10 the reading falls between 9.99 ft and 11.28 ft, based on 11 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 R at CW Bill Young L&D at Acmetonia today?

On Oct 21, 2026, 12:45 AM EDT, the water level was 10.87 ft. Up 0.12 ft over the last 24 hours.

Is Allegheny R at CW Bill Young L&D at Acmetonia rising or falling?

Up 0.12 ft over the last 24 hours. Down 0.37 ft over the last 7 days.

Is the level of Allegheny R at CW Bill Young L&D at Acmetonia normal?

High for late October. Compared with 11 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:03049640 (Agency page)
Coordinates: 40.53613, -79.81476 (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	10.87 ft	2026-10-21 04:45	Provisional
Water temperature	59 °F	2026-10-21 04:45	Provisional

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How to cite

U.S. Geological Survey: Allegheny R at CW Bill Young L&D at Acmetonia (usgs:03049640). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/pennsylvania/allegheny-r-at-cw-bill-young-l-and-d-at-acmetonia

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