Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. 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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