Potomac River at Dam Number Five above Williamsport
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Gauge out of service.
Official
CATEGORY STAGE 
Major Flooding 27 ft Moderate Flooding 24 ft Minor Flooding 21 ft Action 14 ft - Gauge out of service.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 31 - Floodwaters enter the Williamsport Cushwa Visitor Center.
- 29 - The vast majority of the C&O Canal towpath is under water.
- 27 - Widespread flooding is ongoing at River Bend and Potomac Fish & Game Club. Three feet of water are inside the first floor of the powerhouse at Dam Number Five. Water is approaching outbuildings at the Cushwa Basin with the parking lot flooded.
Gauge Location
Recent Crests
| 1. | 21.32 ft | on 05-08-2022 | (P) |
Recent Crests
| 1. | 21.32 ft | on 05-08-2022 | (P) |
Historic Crests
| 1. | 21.32 ft | on 05-08-2022 | (P) |
Historic Crests
| 1. | 21.32 ft | on 05-08-2022 | (P) |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 367.40 ft |
| moderate Flooding | 364.40 ft |
| minor Flooding | 361.40 ft |
| action | 354.40 ft |
| Latest Value | N/A |
| Gauge Zero | 340.40 ft |
Gauge Photos
No Images Found
Probability Information
No Images Available
Unique Local Info
Forecast and warning services began at this site on December 11, 2019.
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.