Monongahela River at Grays Landing Lock and Dam
Critical Stages
15' - Action
21' - Flood
25' - Moderate
27' - Major
Latest Observation
Updated: 3:01 AM EST 12/16/25
Status: No Flooding
Stage: 10.75 ft
Flow: 4.26 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 7 AM 12/16 | 10.2 | 2.27 |
| 1 PM 12/16 | 10.7 | 4.08 |
| 7 PM 12/16 | 10.2 | 2.27 |
| 1 AM 12/17 | 10.7 | 4.08 |
| 7 AM 12/17 | 10.3 | 2.57 |
| 1 PM 12/17 | 10.7 | 4.08 |
| 7 PM 12/17 | 10.3 | 2.57 |
| 1 AM 12/18 | 10.4 | 2.91 |
| 7 AM 12/18 | 10.4 | 2.91 |
| 1 PM 12/18 | 10.8 | 4.44 |
| 7 PM 12/18 | 10.5 | 3.26 |
| 1 AM 12/19 | 10.7 | 4.08 |
| 7 AM 12/19 | 10.7 | 4.08 |
| 1 PM 12/19 | 11.2 | 6.04 |
| 7 PM 12/19 | 10.9 | 4.83 |
| 1 AM 12/20 | 11 | 5.24 |
| 7 AM 12/20 | 10.9 | 4.83 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 3:01 AM 12/16 | 10.75 | 4.26 |
| 2:46 AM 12/16 | 10.76 | 4.3 |
| 2:31 AM 12/16 | 10.79 | 4.41 |
| 2:16 AM 12/16 | 10.87 | 4.71 |
| 2:01 AM 12/16 | 10.91 | 4.87 |
| 1:46 AM 12/16 | 10.96 | 5.08 |
| 1:31 AM 12/16 | 10.99 | 5.2 |
| 1:16 AM 12/16 | 11.02 | 5.33 |
| 1:01 AM 12/16 | 11.12 | 5.72 |
| 12:46 AM 12/16 | 11.25 | 6.26 |
| 12:31 AM 12/16 | 11.26 | 6.3 |
| 12:16 AM 12/16 | 11.3 | 6.47 |
| 12:01 AM 12/16 | 11.33 | 6.61 |
| 11:46 PM 12/15 | 11.33 | 6.61 |
| 11:31 PM 12/15 | 11.24 | 6.21 |
| 11:16 PM 12/15 | 11.19 | 6 |
| 11:01 PM 12/15 | 11.22 | 6.13 |
| 10:46 PM 12/15 | 11.39 | 6.88 |
| 10:31 PM 12/15 | 11.42 | 7.03 |
| 10:16 PM 12/15 | 11.32 | 6.56 |
| 10:01 PM 12/15 | 11.28 | 6.39 |
| 9:46 PM 12/15 | 11.34 | 6.65 |
| 9:31 PM 12/15 | 11.34 | 6.65 |
| 9:16 PM 12/15 | 11.26 | 6.3 |
| 9:01 PM 12/15 | 11.23 | 6.17 |
| 8:46 PM 12/15 | 11.21 | 6.08 |
| 8:31 PM 12/15 | 11.15 | 5.84 |
| 8:16 PM 12/15 | 11.07 | 5.52 |
| 8:01 PM 12/15 | 10.98 | 5.16 |
| 7:46 PM 12/15 | 11.04 | 5.4 |
36' -
Water reaches the flood of record...July 1, 1888.
35' -
Flood waters reach the historic log cabin along Front Street in Greensboro.
34' -
Flood waters reach the corner of Front and County Streets in Greensboro.
31' -
Flood waters reach the Bed and Breakfast on County Street in Greensboro.
30.5' -
Water reaches level of the November 5, 1985 flood.
28.4' -
Water reaches the level of the St. Patricks Day Flood and crest on March 18, 1936.
25.8' -
Water reaches the level reached during the rain and snowmelt flood on January 20, 1996.
25' -
Flood waters reach Martin Ferry Road in the village of Glasworks.
24' -
The lock walls are overtopped at Grays Landing Lock and Dam.
23.95' -
Water levels reach the flood levels of the flood of July 29, 2017.
22.78' -
Water reaches the level reached on March 4, 2015.
21' -
The lock at Grays Landing Lock and Dam goes out of service, and navigation is suspended.
19' -
The bike trail floods in Greensboro near County Street.
| Date | Stage (ft) |
|---|---|
| Jul 1, 1888 | 36 |
| Nov 5, 1985 | 30.5 |
| Mar 18, 1936 | 28.4 |
| Jan 20, 1996 | 25.8 |
| Feb 19, 2000 | 24.5 |
| Jul 29, 2017 | 23.95 |
| Mar 4, 2015 | 22.78 |
| Feb 17, 2018 | 22.07 |
| Mar 1, 2021 | 21.77 |
| Dec 14, 2007 | 21.7 |
| Dec 14, 2007 | 21.37 |
| Apr 4, 2024 | 21.02 |
| May 4, 2009 | 21 |
| Mar 21, 2002 | 20.7 |
| Jan 26, 2010 | 20.6 |
| Nov 23, 2011 | 20.09 |
| Mar 7, 2004 | 19.34 |
| Apr 16, 2007 | 19.31 |
| Jun 5, 2008 | 19.27 |
| Feb 23, 2003 | 19 |
Data provided by the National Weather Service.
