Monongahela River at Charleroi Lock and Dam
Critical Stages
22.6' - Action
28' - Flood
31' - Moderate
35' - Major
Latest Observation
Updated: 1:00 PM EST 12/11/25
Status: No Flooding
Stage: 7.09 ft
Flow: -999 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 7 PM 12/11 | 7.2 | -999 |
| 1 AM 12/12 | 7.2 | -999 |
| 7 AM 12/12 | 7.2 | -999 |
| 1 PM 12/12 | 7.2 | -999 |
| 7 PM 12/12 | 7.2 | -999 |
| 1 AM 12/13 | 7.2 | -999 |
| 7 AM 12/13 | 7.2 | -999 |
| 1 PM 12/13 | 7.1 | -999 |
| 7 PM 12/13 | 7 | -999 |
| 1 AM 12/14 | 7 | -999 |
| 7 AM 12/14 | 7 | -999 |
| 1 PM 12/14 | 6.9 | -999 |
| 7 PM 12/14 | 7 | -999 |
| 1 AM 12/15 | 7 | -999 |
| 7 AM 12/15 | 7 | -999 |
| 1 PM 12/15 | 7 | -999 |
| 7 PM 12/15 | 7 | -999 |
| 1 AM 12/16 | 7 | -999 |
| 7 AM 12/16 | 7 | -999 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 1:00 PM 12/11 | 7.09 | -999 |
| 12:45 PM 12/11 | 7.04 | -999 |
| 12:30 PM 12/11 | 7.09 | -999 |
| 12:15 PM 12/11 | 7.13 | -999 |
| 12:00 PM 12/11 | 7.11 | -999 |
| 11:45 AM 12/11 | 7.17 | -999 |
| 11:30 AM 12/11 | 7.17 | -999 |
| 11:15 AM 12/11 | 7.15 | -999 |
| 11:00 AM 12/11 | 7.15 | -999 |
| 10:45 AM 12/11 | 7.19 | -999 |
| 10:30 AM 12/11 | 7.18 | -999 |
| 10:15 AM 12/11 | 7.47 | -999 |
| 10:00 AM 12/11 | 7.21 | -999 |
| 9:45 AM 12/11 | 7.24 | -999 |
| 9:30 AM 12/11 | 7.25 | -999 |
| 9:15 AM 12/11 | 7.27 | -999 |
| 9:00 AM 12/11 | 7.28 | -999 |
| 8:45 AM 12/11 | 7.29 | -999 |
| 8:30 AM 12/11 | 7.3 | -999 |
| 8:15 AM 12/11 | 7.33 | -999 |
| 8:00 AM 12/11 | 7.35 | -999 |
| 7:45 AM 12/11 | 7.42 | -999 |
| 7:30 AM 12/11 | 7.48 | -999 |
| 7:15 AM 12/11 | 7.67 | -999 |
| 7:00 AM 12/11 | 7.52 | -999 |
| 6:45 AM 12/11 | 7.53 | -999 |
| 6:30 AM 12/11 | 7.54 | -999 |
| 6:15 AM 12/11 | 7.53 | -999 |
| 6:00 AM 12/11 | 7.64 | -999 |
| 5:45 AM 12/11 | 7.63 | -999 |
42.7' -
Water reaches the flood of record...Election Day Flood event...November 5, 1985.
39.9' -
Water reaches the level of the ST. Patricks Day Flood and crest on March 18, 1936.
37' -
50 homes are flooded in Roscoe. Flooding also occurs in the towns of Elco, Allenport, and Stockdale.
36' -
Several homes are flooded on Lynn Street in Roscoe.
35.9' -
Water levels reach the flood levels of the flood of July 30, 2017.
35' -
Backwater flooding in Monongahela along Pigeon Creek causes flood waters up to 4.5 feet in businesses in the lowest building in Penos Plaza and up to 6 feet in Armstrong Park. Backwater flooding spreads upstream along Pigeon Creek to the Route 43 overpass on Park Avenue.
34.1' -
Division of American Chain and Cable Co. In Monessen floods.
33.15' -
Water reaches the level reached on March 5, 2015.
33' -
Flooding is widespread in Fayette City.
32' -
Flooding occurs on Connellsville, Fourth, Cook, and Main Streets in Fayette City
31.6' -
Lock walls overtopped.
30' -
Backwater flooding along Pigeon Creek in Monongahela, begins to flood the lowest building in Penos Plaza, Armstrong Park, and closes Wall Street Bridge across Pigeon Creek.
29' -
Navigation suspended, lock out of service.
28' -
In Monongahela, backwater flooding along Pigeon Creek begins from the intersection of Park Way and Park Avenue.
26.3' -
Water reaches the level reached during Hurricane Ivan September 18, 2004.
26' -
Route 201 in closed due to flooding along Donner's Run.
| Date | Stage (ft) |
|---|---|
| Nov 5, 1985 | 42.7 |
| Mar 9, 1967 | 41.1 |
| Mar 18, 1936 | 39.9 |
| Jan 20, 1996 | 39.8 |
| Mar 5, 1963 | 39.4 |
| Jun 4, 1941 | 39.2 |
| Feb 19, 2000 | 38.5 |
| Oct 16, 1954 | 38 |
| Aug 6, 1956 | 37.2 |
| Mar 28, 1963 | 36.1 |
| Feb 14, 1966 | 35.9 |
| Jul 30, 2017 | 35.9 |
| Jun 23, 1972 | 35.4 |
| Dec 30, 1942 | 35 |
| Feb 10, 1994 | 34.8 |
| Feb 2, 1951 | 34.6 |
| Nov 20, 2003 | 34.6 |
| Jan 27, 1978 | 34.2 |
| Feb 17, 2018 | 33.54 |
| Jan 12, 1974 | 33.4 |
Data provided by the National Weather Service.
