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

Elevation Above Sea Level: 184 feet

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

GPS Coordinates: 38.97594346, -77.24581439

Nearby Water Temperatures

Coastal Flood Statement issued June 14 at 1:24PM EDT until June 17 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Sun June 14, 2026, 1:24 PM
Expires: Mon June 15, 2026, 12:00 PM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.4 to 7.2 feet Mean Lower Low Water). * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...Through late Tuesday night. The high tide cycles tonight, Monday night and Tuesday night are of the most concern. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area.

Do not drive through flooded roadways.

Flood Watch issued June 14 at 11:29AM CDT until June 17 at 7:00AM CDT by NWS Houston/Galveston TX

Effective: Sun June 14, 2026, 12:29 PM
Expires: Mon June 15, 2026, 8:00 AM

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of south central and southeast Texas, including the following areas, in south central Texas, Coastal Jackson and Inland Jackson. In southeast Texas, Austin, Bolivar Peninsula, Brazoria Islands, Brazos, Burleson, Chambers, Coastal Brazoria, Coastal Galveston, Coastal Harris, Coastal Matagorda, Colorado, Fort Bend, Galveston Island, Grimes, Houston, Inland Brazoria, Inland Galveston, Inland Harris, Inland Matagorda, Madison, Matagorda Islands, Montgomery, Northern Liberty, Polk, San Jacinto, Southern Liberty, Trinity, Walker, Waller, Washington and Wharton. * WHEN...Through Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Rounds of showers and thunderstorms are expected, with period of heavy rain. Rainfall totals through Wednesday morning are between 2 to 4 inches, with isolated higher amounts of 6-8 inches. Rainfall rates are expected to range from 2-4 inches per hour at times. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Flood Watch issued June 14 at 8:27PM CDT until June 17 at 7:00AM CDT by NWS New Orleans LA

Effective: Sun June 14, 2026, 9:27 PM
Expires: Mon June 15, 2026, 2:00 PM

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of southeast Louisiana, including the following parishes, Central Tangipahoa, East Baton Rouge, East Feliciana, Eastern Ascension, Iberville, Lower Tangipahoa, Northern Livingston, Northern St. Tammany, Northern Tangipahoa, Pointe Coupee, Southeast St. Tammany, Southern Livingston, Southwestern St. Tammany, St. Helena, Washington, West Baton Rouge, West Feliciana and Western Ascension and southern Mississippi, including the following counties, Amite, Pike, Walthall and Wilkinson. * WHEN...From 7 AM CDT Monday through 7 AM CDT Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - A very moist airmass will be in place across the area for the next several days. Multiple rounds of showers and thunderstorms with locally heavy rainfall are expected through Tuesday night. Widespread rainfall amounts of 2 to 4 inches are expected in the watch area through Tuesday night with isolated totals considerably higher. Additional heavy rainfall is possible Wednesday and Wednesday night. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Flood Watch issued June 15 at 2:18AM CDT until June 17 at 7:00AM CDT by NWS New Orleans LA

Effective: Mon June 15, 2026, 3:18 AM
Expires: Mon June 15, 2026, 8:00 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southeast Louisiana, including the following parishes, Central Tangipahoa, East Baton Rouge, East Feliciana, Eastern Ascension, Iberville, Lower Tangipahoa, Northern Livingston, Northern St. Tammany, Northern Tangipahoa, Pointe Coupee, Southeast St. Tammany, Southern Livingston, Southwestern St. Tammany, St. Helena, Washington, West Baton Rouge, West Feliciana and Western Ascension and southern Mississippi, including the following counties, Amite, Pike, Walthall and Wilkinson. * WHEN...From 7 AM CDT this morning through Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - A very moist airmass will be in place across the area for the next several days. Multiple rounds of showers and thunderstorms with locally heavy rainfall are expected through Tuesday night. Widespread rainfall amounts of 2 to 4 inches are expected in the watch area through Tuesday night with isolated totals considerably higher. Additional heavy rainfall is possible Wednesday and Wednesday night. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Coastal Flood Statement issued June 15 at 3:01AM EDT until June 17 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Mon June 15, 2026, 3:01 AM
Expires: Mon June 15, 2026, 6:00 PM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.3 to 7.0 feet Mean Lower Low Water). * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...Through late Tuesday night. The high tide cycles tonight, Monday night and Tuesday night are of the most concern. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area.

Do not drive through flooded roadways.