Allegheny River at Clinton Lock and Dam
Critical Stages
17' - Action
21' - Flood
22' - Moderate
24' - Major
Latest Observation
Updated: 3:00 AM EST 12/18/25
Status: No Flooding
Stage: 9.78 ft
Flow: 7.26 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 7 AM 12/18 | 9.8 | 7.97 |
| 1 PM 12/18 | 9.8 | 7.97 |
| 7 PM 12/18 | 9.8 | 7.97 |
| 1 AM 12/19 | 9.8 | 7.97 |
| 7 AM 12/19 | 9.9 | 8.84 |
| 1 PM 12/19 | 10 | 9.8 |
| 7 PM 12/19 | 10.2 | 11.3 |
| 1 AM 12/20 | 10.5 | 14 |
| 7 AM 12/20 | 10.8 | 17.2 |
| 1 PM 12/20 | 11 | 19.7 |
| 7 PM 12/20 | 11.2 | 21.4 |
| 1 AM 12/21 | 11.3 | 22.4 |
| 7 AM 12/21 | 11.4 | 23.3 |
| 1 PM 12/21 | 11.3 | 22.4 |
| 7 PM 12/21 | 11.2 | 21.4 |
| 1 AM 12/22 | 11 | 19.7 |
| 7 AM 12/22 | 10.9 | 18.4 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 3:00 AM 12/18 | 9.78 | 7.26 |
| 2:45 AM 12/18 | 9.79 | 7.6 |
| 2:30 AM 12/18 | 9.79 | 7.6 |
| 2:15 AM 12/18 | 9.8 | 7.97 |
| 2:00 AM 12/18 | 9.8 | 7.97 |
| 1:45 AM 12/18 | 9.8 | 7.97 |
| 1:30 AM 12/18 | 9.81 | 8.05 |
| 1:15 AM 12/18 | 9.8 | 7.97 |
| 1:00 AM 12/18 | 9.81 | 8.05 |
| 12:45 AM 12/18 | 9.81 | 8.05 |
| 12:30 AM 12/18 | 9.82 | 8.14 |
| 12:15 AM 12/18 | 9.81 | 8.05 |
| 12:00 AM 12/18 | 9.81 | 8.05 |
| 11:45 PM 12/17 | 9.81 | 8.05 |
| 11:30 PM 12/17 | 9.81 | 8.05 |
| 11:15 PM 12/17 | 9.81 | 8.05 |
| 11:00 PM 12/17 | 9.8 | 7.97 |
| 10:45 PM 12/17 | 9.8 | 7.97 |
| 10:30 PM 12/17 | 9.8 | 7.97 |
| 10:15 PM 12/17 | 9.8 | 7.97 |
| 10:00 PM 12/17 | 9.79 | 7.6 |
| 9:45 PM 12/17 | 9.79 | 7.6 |
| 9:30 PM 12/17 | 9.79 | 7.6 |
| 9:15 PM 12/17 | 9.8 | 7.97 |
| 9:00 PM 12/17 | 9.79 | 7.6 |
| 8:45 PM 12/17 | 9.78 | 7.26 |
| 8:30 PM 12/17 | 9.78 | 7.26 |
| 8:15 PM 12/17 | 9.77 | 6.93 |
| 8:00 PM 12/17 | 9.76 | 6.61 |
| 7:45 PM 12/17 | 9.76 | 6.61 |
26.4' -
Water reaches the bottom of the first floor window of the powerhouse at Lock 6.
23' -
Top of rail of the Pennsylvania Railroad across the river from the lock floods.
19' -
Lock walls overtopped.
17' -
Navigation suspended, lock out of service.
| Date | Stage (ft) |
|---|---|
| Mar 18, 1936 | 26.4 |
| Jun 23, 1972 | 22 |
| Sep 18, 2004 | 20.3 |
| Mar 16, 2007 | 19.8 |
| Dec 31, 1990 | 19.2 |
| Feb 8, 2019 | 17.9 |
| Mar 23, 2007 | 16.2 |
Data provided by the National Weather Service.
