Station Name: DIFFICULT RUN NEAR GREAT FALLS, VA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 184 feet / 56 meters

Nearest Address:
9200 Old Dominion Dr
McLean, VA 22102
Fairfax County

GPS Coordinates: 38.97594346, -77.24581439

Nearby Water Temperatures

Coastal Flood Advisory issued October 28 at 4:25PM EDT until October 29 at 5:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Tue October 28, 2025, 4:25 PM
Expires: Wed October 29, 2025, 12:30 AM

* WHAT...Up to one half foot of inundation above ground level expected in low-lying areas due to tidal flooding. * WHERE...Shoreline in the City of Alexandria and Arlington County. * WHEN...From 10 PM this evening to 5 AM EDT Wednesday, especially around the time of high tide. * IMPACTS...Water is expected to approach the curb near the intersection of King Street and Strand Street in Alexandria. * ADDITIONAL DETAILS...Tides one to one and a half feet above normal. High tide at Alexandria is at 1:46 AM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Coastal Flood Advisory issued October 28 at 4:25PM EDT until October 28 at 11:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Tue October 28, 2025, 4:25 PM
Expires: Tue October 28, 2025, 11:00 PM

* WHAT...Up to one half foot of inundation above ground level expected in low-lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until 11 PM EDT this evening, especially around the time of high tide. * IMPACTS...At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next two high tides at Goose Bay are at 9:20 PM this evening and 10:04 AM Wednesday morning. The next two high tides at Dahlgren are at 8:09 PM this evening and 8:35 AM Wednesday morning.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Coastal Flood Advisory issued October 28 at 4:25PM EDT until October 29 at 4:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Tue October 28, 2025, 4:25 PM
Expires: Wed October 29, 2025, 12:30 AM

* WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low-lying areas due to tidal flooding. For the Coastal Flood Watch, one to three feet of inundation above ground level possible in low-lying areas due to tidal flooding. * WHERE...Shoreline in Anne Arundel County. * WHEN...For the Coastal Flood Advisory, from 7 PM this evening to 4 AM EDT Wednesday, especially around the time of high tide. For the Coastal Flood Watch, from Wednesday evening through Friday morning, especially around the time of high tide. * IMPACTS...For tonight, tide levels around 3.0 feet are expected which leads to flooding of the Dock Street parking area, and around the Alex Haley Memorial and Compromise Street. For Wednesday night through Thursday night, tide levels around 3.5 to 4.5 feet are possible around times of high tide. At 4.2 feet, the boardwalk at Annapolis City Dock is expected to be underwater, with numerous buildings flooded. Water also will affect several locations near City Dock, including portions of Compromise Street and several streets on the Naval Academy campus. Shoreline inundation up to two feet above ground is likely in other low lying areas. * ADDITIONAL DETAILS...Tides two and a half to three feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 11:22 PM this evening and 10:51 AM Wednesday morning.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Coastal Flood Watch issued October 28 at 4:25PM EDT until October 31 at 7:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Tue October 28, 2025, 4:25 PM
Expires: Wed October 29, 2025, 12:30 AM

* WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low-lying areas due to tidal flooding. For the Coastal Flood Watch, one to three feet of inundation above ground level possible in low-lying areas due to tidal flooding. * WHERE...Shoreline in Anne Arundel County. * WHEN...For the Coastal Flood Advisory, from 7 PM this evening to 4 AM EDT Wednesday, especially around the time of high tide. For the Coastal Flood Watch, from Wednesday evening through Friday morning, especially around the time of high tide. * IMPACTS...For tonight, tide levels around 3.0 feet are expected which leads to flooding of the Dock Street parking area, and around the Alex Haley Memorial and Compromise Street. For Wednesday night through Thursday night, tide levels around 3.5 to 4.5 feet are possible around times of high tide. At 4.2 feet, the boardwalk at Annapolis City Dock is expected to be underwater, with numerous buildings flooded. Water also will affect several locations near City Dock, including portions of Compromise Street and several streets on the Naval Academy campus. Shoreline inundation up to two feet above ground is likely in other low lying areas. * ADDITIONAL DETAILS...Tides two and a half to three feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 11:22 PM this evening and 10:51 AM Wednesday morning.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.