| Flood Impacts |
| 31.0 | Notification level 9 with 43 to 53 gates open at Conowingo Dam. Mandatory evacuations initiated in Port Deposit. |
| 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 | Notification level 5 with 21 to 25 gates open at Conowingo Dam. Backyards and basements on Main Street and Tomes Landing begin to flood. |
| 23.7 | Notification level 4 with 18 to 20 gates open at Conowing Dam. Minor flooding begins in the town of Port Deposit Maryland. |
| 22.9 | Notification level 3 with 16 to 17 gates open at Conowingo Dam. Maryland route 222 north of Port Deposit closed. |
| 21.5 | Notification level 2 with 12 to 15 gates open at Conowingo Dam. |
| 20.0 | Notification level 1 with 10 to 11 gates open at Conowingo dam. |
