Allegheny R at Lock & Dam 2 at Aspinwall water level

Name: Allegheny R at Lock & Dam 2 at Aspinwall 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

Normal for mid-October

Water level

10.84ft Down 0.08 ft over the last 24 hours

Measured Oct 20, 2026, 09:30 AM EDT (34 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 rise to 11.00 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

Water levels are unremarkable at Allegheny R at Lock & Dam 2 at Aspinwall, where the gauge shows 10.84 ft.

That puts it 0.42 ft above the median of 10.42 ft for mid-October, based on 9 years of readings. It is 10.16 ft below the flood stage of 21.00 ft. A year ago it stood at 10.27 ft (+0.57 ft).

It is still going down, by 0.08 ft over the past 24 hours. The forecast expects the river to rise to 11.00 ft by Tuesday, October 20 at 08:00 AM. The 30-day range is 10.54 ft – 12.02 ft.

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

Key numbers

Median for this date: 10.42 ft0.42 ft above the median for this date
Normal for this date: 10.11 ft – 11.47 ft8 years in 10 fall in this range (9 years of records)
Same day last year: 10.27 ft+0.57 ft
Lowest and highest in 30 days: 10.54 ft – 12.02 ft
Lowest and highest in 12 months: 10.29 ft – 14.75 ft
Highest on record: 26.90 ftJune 24, 1972
Forecast peak: 11.00 ftTuesday, October 20 at 08:00 AM

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

For reference, flood stage is 21.00 ft.

What happens at each level

23.10 ft: 13th Street floods in Sharpsburg.
21.70 ft: Trumbull Construction Co on 51st Street floods.
21.30 ft: Flooding begins near the M & M Gas Station on North Main Street in Sharpsburg.
21.00 ft: Lock wall overtopped.
19.00 ft: Navigation suspended, lock out of service.
10.84 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	26.90 ft	June 24, 1972
2	22.90 ft	January 20, 1996
3	22.10 ft	September 18, 2004
4	18.50 ft	March 16, 2007
5	16.20 ft	March 24, 2007

Weather at the gauge

No rain in the last 3 days.

20 Tue 65° 37° – Wind 5 mph

21 Wed 63° 38° – Wind 6 mph

22 Thu 65° 43° – Wind 6 mph

23 Fri 63° 45° – Wind 6 mph

24 Sat 64° 43° – Wind 4 mph

25 Sun 68° 46° – Wind 5 mph

26 Mon 68° 50° – Wind 6 mph

Forecast: Open-Meteo

Sunrise 07:37 AM Sunset 06:34 PM Daylight 10 hr, 57 min First quarter 69%

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	10.15 ft	Low	−0.50 ft	36 mi
Allegheny R at CW Bill Young L&D at AcmetoniaRiver gauge, Allegheny R	10.77 ft	Normal	+0.05 ft	6 mi
Allegheny R at CW Bill Young (lower) AcmetoniaRiver gauge, Allegheny R	11.18 ft	Normal	−0.08 ft	6.1 mi
Allegheny R at L&D 2 (lower pool) at AspinwallRiver gauge, Allegheny R	16.74 ft	Normal	−0.23 ft	0.1 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Pine Creek at Grant Avenue at EtnaRiver gauge, Pine Creek	4.97 ft	Very high	−0.24 ft	2.1 mi
Little Pine Creek near EtnaRiver gauge, Little Pine Creek	2.55 ft	Below flood stage	−0.05 ft	2.6 mi
Girtys Run above Grant Avenue at MillvaleRiver gauge, Girtys Run	2.44 ft	High	−0.04 ft	3.0 mi
Monongahela R at Point State Park at PittsburghRiver gauge, Monongahela R	16.62 ft	Below flood stage	−0.29 ft	6.0 mi
Sawmill Run at Duquesne Heights near PittsburghRiver gauge, Sawmill Run	3.34 ft	Normal	−0.01 ft	7 mi
Monongahela R at L&D2 Lower Pool at BraddockRiver gauge, Monongahela R	17.33 ft	High	−0.10 ft	7 mi
Thompson Run at Turtle CreekRiver gauge, Thompson Run	0.90 ft	Very high	−0.01 ft	7 mi

Questions and answers

How does the Allegheny R at Lock & Dam 2 at Aspinwall compare with last year?

It is 0.57 ft higher than on the same day last year, when the reading was 10.27 ft.

What is flood stage for the Allegheny R at Lock & Dam 2 at Aspinwall?

The official flood stage is 21.00 ft. The level is currently 10.16 ft below it.

What is a normal level for the Allegheny R at Lock & Dam 2 at Aspinwall in mid-October?

The median for mid-October is 10.42 ft. In 8 years out of 10 the reading falls between 10.11 ft and 11.47 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 R at Lock & Dam 2 at Aspinwall today?

On Oct 20, 2026, 09:30 AM EDT, the water level was 10.84 ft. Down 0.08 ft over the last 24 hours.

Is Allegheny R at Lock & Dam 2 at Aspinwall rising or falling?

Down 0.08 ft over the last 24 hours. Down 0.47 ft over the last 7 days.

Is the level of Allegheny R at Lock & Dam 2 at Aspinwall normal?

Normal 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:03049680 (Agency page)
Coordinates: 40.48750, -79.91500 (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	10.84 ft	2026-10-20 13:30	Provisional

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How to cite

U.S. Geological Survey: Allegheny R at Lock & Dam 2 at Aspinwall (usgs:03049680). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/pennsylvania/allegheny-r-at-lock-and-dam-2-at-aspinwall

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