Susquehanna River at Conowingo Dam
Critical Stages
21.5' - Action
23.5' - Flood
24.8' - Moderate
28.5' - Major
Latest Observation
Updated: 5:35 PM EST 12/15/25
Status: No Flooding
Stage: 14.85 ft
Flow: 60.5 kcfs
Forecast
Forecast not available for this location.
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 5:35 PM 12/15 | 14.85 | 60.5 |
| 5:30 PM 12/15 | 14.81 | 59.7 |
| 5:25 PM 12/15 | 14.73 | 58.2 |
| 5:20 PM 12/15 | 14.61 | 56 |
| 5:15 PM 12/15 | 14.45 | 53.1 |
| 5:10 PM 12/15 | 14.25 | 49.6 |
| 5:05 PM 12/15 | 14.16 | 48 |
| 5:00 PM 12/15 | 14.14 | 47.7 |
| 4:55 PM 12/15 | 14.12 | 47.4 |
| 4:50 PM 12/15 | 14.08 | 46.7 |
| 4:45 PM 12/15 | 14.02 | 45.8 |
| 4:40 PM 12/15 | 13.9 | 44.1 |
| 4:35 PM 12/15 | 13.74 | 41.8 |
| 4:30 PM 12/15 | 13.53 | 39 |
| 4:25 PM 12/15 | 13.27 | 35.6 |
| 4:20 PM 12/15 | 12.96 | 31.8 |
| 4:15 PM 12/15 | 12.61 | 27.9 |
| 4:10 PM 12/15 | 12.21 | 23.8 |
| 4:05 PM 12/15 | 11.8 | 20.2 |
| 4:00 PM 12/15 | 11.65 | 18.9 |
| 3:55 PM 12/15 | 11.65 | 18.9 |
| 3:50 PM 12/15 | 11.64 | 18.8 |
| 3:45 PM 12/15 | 11.62 | 18.7 |
| 3:40 PM 12/15 | 11.61 | 18.6 |
| 3:35 PM 12/15 | 11.59 | 18.4 |
| 3:30 PM 12/15 | 11.56 | 18.2 |
| 3:25 PM 12/15 | 11.5 | 17.7 |
| 3:20 PM 12/15 | 11.42 | 17.1 |
| 3:15 PM 12/15 | 11.3 | 16.2 |
| 3:10 PM 12/15 | 11.14 | 15 |
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.
