An arctic cold front will quickly track across the Great Lakes, Northeast and mid-Atlantic. Snow showers and squalls will accompany this system with increasing winds and falling temperatures. Damaging wind gusts may result in tree damage and power outages. Meanwhile, moisture returns for the Pacific Northwest this weekend with both coverage and intensity of rainfall and higher elevation snows. Read More >
Tidal Inundation Mapping
All heights on this map are in NAVD88 elevation. To correlate this value to local datums of tide gauges, such as Mean Lower Low Water (MLLW) or Washington Mean Low Water (WMLW) in your area, click on the tab above corresponding to the elevation you select.
Disclaimer: These maps are only valid when there is no freshwater flooding occurring. In the event of freshwater flooding on the Potomac River, users should consult the freshwater inundation maps located at these links:
Georgetown/Rosslyn areas:
https://water.weather.gov/ahps2/inundation/index.php?gage=gtnd2
Downtown DC/Potomac Park/Reagan Airport/Anacostia:
https://water.weather.gov/ahps2/inundation/index.php?gage=wasd2
Alexandria/Belle View/National Harbor/JBAB (south half):
https://water.weather.gov/ahps2/inundation/index.php?gage=axtv2
| NAVD88 Elevation | 2.0 ft |
| Georgetown (GTND2) | 4.26 ft (WMLW) |
| SW Waterfront (WASD2) | 3.4 ft (MLLW) |
| Alexandria (AXTV2) | 2.0 ft |
| Anacostia (ANAD2) | 2.0 ft |
| NAVD88 Elevation | 2.5 ft |
| Georgetown (GTND2) | 4.76 ft (WMLW) |
| SW Waterfront (WASD2) | 3.9 ft (MLLW) |
| Alexandria (AXTV2) | 2.5 ft |
| Anacostia (ANAD2) | 2.5 ft |
| NAVD88 Elevation | 3.0 ft |
| Georgetown (GTND2) | 5.26 ft (WMLW) |
| SW Waterfront (WASD2) | 4.4 ft (MLLW) |
| Alexandria (AXTV2) | 3.0 ft |
| Anacostia (ANAD2) | 3.0 ft |
| NAVD88 Elevation | 3.5 ft |
| Georgetown (GTND2) | 5.76 ft (WMLW) |
| SW Waterfront (WASD2) | 4.9 ft (MLLW) |
| Alexandria (AXTV2) | 3.5 ft |
| Anacostia (ANAD2) | 3.5 ft |
| NAVD88 Elevation | 4.0 ft |
| Georgetown (GTND2) | 6.26 ft (WMLW) |
| SW Waterfront (WASD2) | 5.4 ft (MLLW) |
| Alexandria (AXTV2) | 4.0 ft |
| Anacostia (ANAD2) | 4.0 ft |
| NAVD88 Elevation | 4.5 ft |
| Georgetown (GTND2) | 6.76 ft (WMLW) |
| SW Waterfront (WASD2) | 5.9 ft (MLLW) |
| Alexandria (AXTV2) | 4.5 ft |
| Anacostia (ANAD2) | 4.5 ft |
| NAVD88 Elevation | 5.0 ft |
| Georgetown (GTND2) | 7.26 ft (WMLW) |
| SW Waterfront (WASD2) | 6.4 ft (MLLW) |
| Alexandria (AXTV2) | 5.0 ft |
| Anacostia (ANAD2) | 5.0 ft |
| NAVD88 Elevation | 5.5 ft |
| Georgetown (GTND2) | 7.76 ft (WMLW) |
| SW Waterfront (WASD2) | 6.9 ft (MLLW) |
| Alexandria (AXTV2) | 5.5 ft |
| Anacostia (ANAD2) | 5.5 ft |
| NAVD88 Elevation | 6.0 ft |
| Georgetown (GTND2) | 8.26 ft (WMLW) |
| SW Waterfront (WASD2) | 7.4 ft (MLLW) |
| Alexandria (AXTV2) | 6.0 ft |
| Anacostia (ANAD2) | 6.0 ft |
| NAVD88 Elevation | 6.5 ft |
| Georgetown (GTND2) | 8.76 ft (WMLW) |
| SW Waterfront (WASD2) | 7.9 ft (MLLW) |
| Alexandria (AXTV2) | 6.5 ft |
| Anacostia (ANAD2) | 6.5 ft |
| NAVD88 Elevation | 7.0 ft |
| Georgetown (GTND2) | 9.26 ft (WMLW) |
| SW Waterfront (WASD2) | 8.4 ft (MLLW) |
| Alexandria (AXTV2) | 7.0 ft |
| Anacostia (ANAD2) | 7.0 ft |
| NAVD88 Elevation | 8.0 ft |
| Georgetown (GTND2) | 10.26 ft (WMLW) |
| SW Waterfront (WASD2) | 9.4 ft (MLLW) |
| Alexandria (AXTV2) | 8.0 ft |
| Anacostia (ANAD2) | 8.0 ft |
| NAVD88 Elevation | 9.0 ft |
| Georgetown (GTND2) | 11.26 ft (WMLW) |
| SW Waterfront (WASD2) | 10.4 ft (MLLW) |
| Alexandria (AXTV2) | 9.0 ft |
| Anacostia (ANAD2) | 9.0 ft |
| NAVD88 Elevation | 10.0 ft |
| Georgetown (GTND2) | 12.26 ft (WMLW) |
| SW Waterfront (WASD2) | 11.4 ft (MLLW) |
| Alexandria (AXTV2) | 10.0 ft |
| Anacostia (ANAD2) | 10.0 ft |
| NAVD88 Elevation | 11.0 ft |
| Georgetown (GTND2) | 13.26 ft (WMLW) |
| SW Waterfront (WASD2) | 12.4 ft (MLLW) |
| Alexandria (AXTV2) | 11.0 ft |
| Anacostia (ANAD2) | 11.0 ft |
| NAVD88 Elevation | 12.0 ft |
| Georgetown (GTND2) | 14.26 ft (WMLW) |
| SW Waterfront (WASD2) | 13.4 ft (MLLW) |
| Alexandria (AXTV2) | 12.0 ft |
| Anacostia (ANAD2) | 12.0 ft |
| NAVD88 Elevation | 13.0 ft |
| Georgetown (GTND2) | 15.26 ft (WMLW) |
| SW Waterfront (WASD2) | 14.4 ft (MLLW) |
| Alexandria (AXTV2) | 13.0 ft |
| Anacostia (ANAD2) | 13.0 ft |
| NAVD88 Elevation | 14.0 ft |
| Georgetown (GTND2) | 16.26 ft (WMLW) |
| SW Waterfront (WASD2) | 15.4 ft (MLLW) |
| Alexandria (AXTV2) | 14.0 ft |
| Anacostia (ANAD2) | 14.0 ft |
| NAVD88 Elevation | 15.0 ft |
| Georgetown (GTND2) | 17.26 ft (WMLW) |
| SW Waterfront (WASD2) | 16.4 ft (MLLW) |
| Alexandria (AXTV2) | 15.0 ft |
| Anacostia (ANAD2) | 15.0 ft |
| NAVD88 Elevation | 16.0 ft |
| Georgetown (GTND2) | 18.26 ft (WMLW) |
| SW Waterfront (WASD2) | 17.4 ft (MLLW) |
| Alexandria (AXTV2) | 16.0 ft |
| Anacostia (ANAD2) | 16.0 ft |
| NAVD88 Elevation | 17.0 ft |
| Georgetown (GTND2) | 19.26 ft (WMLW) |
| SW Waterfront (WASD2) | 18.4 ft (MLLW) |
| Alexandria (AXTV2) | 17.0 ft |
| Anacostia (ANAD2) | 17.0 ft |
Depending on your internet connection, it could take up to one minute for the map to be drawn after you select a water level.
| Select Water Level (in NAVD88): Use the tabs above to relate this value to local datums if needed. |
|
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