Four Mile Run above Highway 1 at Alexandria
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
- Upstream gauge unavailableDownstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 07/02/2025 9:12 PM EDTCATEGORY STAGE 
Major Flooding 12 ft Moderate Flooding 10 ft Minor Flooding 7 ft Action 4 ft Reliability of the Forecast:
NOTE: Forecasts are not available. Only observed stages are available for this point.
Gauge reading affected by tides.
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
- 21.5 - Water covers the Route 1 bridge over Four Mile Run.
- 13 - Significant flooding begins on both sides of the stream, with major flooding of homes and businesses.
- 9 - Flooding begins on both sides of the stream, with homes and businesses likely to be affected.
Gauge Info
| Coordinates | 38.8403, -77.0533 |
| RFC | MARFC |
| State | VA |
| WFO | LWX |
| County | City of Alexandria |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 01652545 |
Gauge Location
Recent Crests
| 1. | 4.66 ft | on 09-10-2018 |
| 2. | 3.80 ft | on 09-08-2011 |
| 3. | 4.99 ft | on 09-02-2006 |
Recent Crests
| 1. | 4.66 ft | on 09-10-2018 |
| 2. | 3.80 ft | on 09-08-2011 |
| 3. | 4.99 ft | on 09-02-2006 |
Historic Crests
| 1. | 4.99 ft | on 09-02-2006 |
| 2. | 4.66 ft | on 09-10-2018 |
| 3. | 3.80 ft | on 09-08-2011 |
Historic Crests
| 1. | 4.99 ft | on 09-02-2006 |
| 2. | 4.66 ft | on 09-10-2018 |
| 3. | 3.80 ft | on 09-08-2011 |
Probability Information
No Images Available
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.