Susquehanna River at Conowingo Dam
Critical Stages
21.5' - Action
23.5' - Flood
24.8' - Moderate
28.5' - Major
Latest Observation
Updated: 9:35 AM EST 12/16/25
Status: No Flooding
Stage: 9.6 ft
Flow: 6.36 kcfs
Forecast
Forecast not available for this location.
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 10:35 AM 12/16 | 9.3 | 5.1 |
| 10:30 AM 12/16 | 9.31 | 5.14 |
| 10:25 AM 12/16 | 9.32 | 5.18 |
| 10:20 AM 12/16 | 9.32 | 5.18 |
| 10:15 AM 12/16 | 9.34 | 5.26 |
| 10:10 AM 12/16 | 9.36 | 5.35 |
| 10:05 AM 12/16 | 9.37 | 5.39 |
| 10:00 AM 12/16 | 9.4 | 5.52 |
| 9:55 AM 12/16 | 9.42 | 5.6 |
| 9:50 AM 12/16 | 9.45 | 5.72 |
| 9:45 AM 12/16 | 9.48 | 5.85 |
| 9:40 AM 12/16 | 9.53 | 6.06 |
| 9:35 AM 12/16 | 9.6 | 6.36 |
| 9:30 AM 12/16 | 9.69 | 6.75 |
| 9:25 AM 12/16 | 9.8 | 7.25 |
| 9:20 AM 12/16 | 9.95 | 7.96 |
| 9:15 AM 12/16 | 10.12 | 8.82 |
| 9:10 AM 12/16 | 10.32 | 9.88 |
| 9:05 AM 12/16 | 10.52 | 11 |
| 9:00 AM 12/16 | 10.71 | 12.1 |
| 8:55 AM 12/16 | 10.73 | 12.3 |
| 8:50 AM 12/16 | 10.73 | 12.3 |
| 8:45 AM 12/16 | 10.73 | 12.3 |
| 8:40 AM 12/16 | 10.73 | 12.3 |
| 8:35 AM 12/16 | 10.73 | 12.3 |
| 8:30 AM 12/16 | 10.73 | 12.3 |
| 8:25 AM 12/16 | 10.73 | 12.3 |
| 8:20 AM 12/16 | 10.73 | 12.3 |
| 8:15 AM 12/16 | 10.73 | 12.3 |
| 8:10 AM 12/16 | 10.73 | 12.3 |
31' -
Notification level 9 with 43 to 53 gates open at Conowingo dam.
29.4' -
Notification level 8 with 36 to 42 gates open at Conowingo Dam.
28.5' -
Notification level 7 with 33 to 35 gates open at Conowingo Dam.
26.3' -
Notification level 6 with 26 to 32 gates open at Conowingo Dam.
24.8' -
Backyards and basements on Main Street and Tome's Landing begin to flood.
23.7' -
Minor flooding begins in the town of Port Deposit, Maryland.
22.9' -
Maryland Route 222 north of Port Deposit is closed.
21.5' -
Notification level 2 with 12 to 15 gates open at Conowingo Dam.
20' -
Notification level 1 with 10 to 11 gates open at Conowingo Dam.
| Date | Stage (ft) |
|---|---|
| Jun 24, 1972 | 36.83 |
| Jan 20, 1996 | 34.18 |
| Sep 9, 2011 | 32.41 |
| Sep 27, 1975 | 30.920000076294 |
| Sep 19, 2004 | 30.07 |
| Feb 16, 1984 | 28.08 |
| Apr 2, 1993 | 28.06 |
| Mar 7, 1979 | 28.04 |
| Jun 29, 2006 | 27.31 |
| Apr 4, 2005 | 26.7 |
| Feb 4, 1970 | 26.4 |
| Mar 16, 1986 | 26.17 |
| Mar 23, 1994 | 26.16 |
| Jul 26, 2018 | 26.08 |
| Jan 28, 1978 | 25.64 |
| Mar 6, 2008 | 25.64 |
| Jan 10, 1998 | 25.55 |
| Feb 25, 1981 | 25.18 |
| Apr 29, 2011 | 25.12 |
| Jan 28, 1976 | 24.65 |
Data provided by the National Weather Service.
