Fast moving water and changing currents will be experienced. Water floods 25 to 30 homes along the West Virginia side of the river just downstream from Hancock, and at least another 20 to 30 in Hancock itself. the Range of Possible River Levels, Weather Forecast Office (Baltimore/Washington) Sterling, VA, Chance of Exceeding Levels During Entire Period, Short-term Probabilistic Guidance (Experimental), U.S. Geological Survey (USGS) Data and Site Info for Washington DC (Little Falls). At 7 a.m., the Potomac River was at 15.1 feet at Harpers Ferry. The heavy rainfall caused massive runoff into the area tributaries, including the Potomac River. Flood stage is at 18 feet. Backwaters from the Shenandoah River flood even more of Shenandoah Street, including the shuttle bus pavilion. Datum of gage is 37.20 ft above North American Vertical Datum of 1988. Water floods low spots on East Main Street in Hancock. The Blockhouse Point Park is flooded. 5.5: Water reaches the top of the ferry landing for Sycamore Island. Water reaches the top of the ferry landing for Sycamore Island. Latitude/Longitude Disclaimer: The gauge location shown in the above map The Potomac River at Harpers Ferry was expected to crest Saturday morning at 23.4 feet, more than 5 feet above flood stage. The FEMA Web Mapping Service (WMS) is down. The C&O Canal overflows at the Great Falls Tavern. 5: Portions of the Potomac Heritage Trail begin to flood. Potomac River Basin of West Virginia, in Jacobson, Robert B., editor, Geomorphic studies of the storm and flood of November 3-5, 1985, in the upper Potomac River basin: U.S. Geological Survey Bulletin 1981, p. E1-E96. The Potomac is expected to crest at three to eight feet above flood stage between Georgetown and Glen Echo around 11 a.m., officials said. Water may begin to inundate low points of the CSX Railroad tracks on the West Virginia side of the river due to backwater. Upper portions of the River Trail at Great Falls National Park begin to flood and will be closed. The boat ramp at Four Locks is covered by water. Water begins to flood low spots of West Main Street in Hancock. Water begins to inundate homes and business in Hancock. Oct. 1, 1932, to Jan. 5, 1935, Mar. Please change your bookmarks and links. ... --Water-stage recorder, crest-stage gage, and concrete control. PROVISIONAL DATA SUBJECT TO REVISION. Horizontal Datum: Water begins to inundate some yards on the west end of Hancock. Note: Use the official hydrograph at the top of this web page River Stage Reference Frame Gauge Height Flood Stage Uses; NWS stage: 0 ft : 3.3 ft : Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps : Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source; NAVD88: 0.00: … provided to the NWS by the gauge owner. The Monongahela River crested at 42.7 ft (13.0 m), or 10.7 ft (3.3 m) above flood state in Brownsville, and rose 18 ft (5.5 m) above flood stage in Greensboro. The river was cresting at that hour. 18, 1936, to Jan. 20, 1937, nonrecording gage, on former highway bridge just upstream at same gage datum. The west end of the Potomac Airpark runway begins to flood. The river reaches caution level for boaters as defined by the State of Maryland. --Flood in June 1889 reached a stage of 30 ft, from floodmarks, discharge, 56,000 ft 3 /s. The Potomac River at Edwards Ferry, between Loudoun and Montgomery counties, is expected to rise to flood stage Thursday morning, eventually reaching moderate flood stage on Friday. Historical Floods: Potomac River at Point of Rocks, MD Latitude: 39.274 Longitude: -77.543 Last Flood: 12/17/2018 Period of Record: 1889-Present Flood Stage: 16 Number of Floods: 121 Date of Flood Crest (ft) Streamflow (cfs) Category Code Date of Flood Crest (ft) Streamflow (cfs) Category Code 6/2/1889 40.2 460,000 Major C1 G1 For more information on your flood risk go to www.floodsmart.gov. For details. Latitude/Longitude Disclaimer: The gauge location shown in the above map Water approaches the highest point on Main Street. Longitude: 77.127778° W, Press enter or select the go button to submit request, Used to Estimate the Chance of Flooding and COOPERATION. Water covers the road to the maintenance shop for the National Park Service near Hancock. Additionally, access to Potomac Airpark may be restricted due to backwater. The Potomac River Basin Map has now been split in half: the Upper Potomac (Hancock, MD and points west) and the Lower Potomac (Hancock and points east).. is the approximate location based on the latitude/longitude coordinates Fast moving water and changing currents can be expected. Water begins to affect portions of the Billy Goat Trail between Great Falls and Carderock. the great flood of '96 The flooding of the Potomac River on January 20 and 21, following an almost record-setting blizzard, rain, and melting snow, wrecked havoc on 70 to 80 percent of the Canal according Park Superintendent Doug Faris. These trails will be closed. The information below shows the Potomac River level in Harpers Ferry, WV at a glance. There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. For details. It is estimated that the levee system reduces the risk for a flood that has between a 0.2 and 0.1-percent chance of occurring in a year. Search by city or zip code. Water reaches the top of the Hancock boat ramp and begins to spill over into the adjacent parking lot. ... --Flood of June 2, 1889, was of approximately the same magnitude as that of March 19, 1936. EXTREMES OUTSIDE PERIOD OF RECORD. If you notice any errors in the below information, please contact our. Datum of gage is 37.20 ft above North American Vertical Datum of 1988. The west end of the Potomac Airpark runway begins to flood. Ferry service to the island will likely be suspended. ... --Water-stage recorder and crest-stage gage. NAD83/WGS84. Another disaster struck the town in 1985. Upper portions of the River Trail at Great Falls National Park begin to flood and will be closed. River Observations & Forecasts; Watches & Warnings; MARFC River Forecast Products; River & Lakes Summaries; 5 Day Significant Flood Outlook; Briefings and Discussions; Flash Flood Guidance; Ensemble Forecasts; Event Briefings; National River and Lake Observations and Forecasts; Observed River Stages Maps If you notice any errors in the below information, please contact our. The "Flood Tracking Chart for the Potomac River Basin" can be used by local citizens and emer­ gency-response personnel to track and record the latest river stage and predicted flood-crest information during a flood event. Conditions for boating will be extremely hazardous. See the current river level, flood stages and level predictions for the Potomac River Level Harpers Ferry. Through analysis by the Morgan County Emergency Management Agency, and observations during a high water event in 2018, it has been determined that the existing minor flood stage of 30 feet (the point at which roads or public property begins to be affected) is significantly too high. The Potomac River rose 10 feet above flood stage, submerging much of DC's low-lying areas, including Haines Point and the Navy Yard and Naval Air Station. Press enter or select the go button to submit request, Used to Estimate the Chance of Flooding and Station Number Station name Date/Time Gage height, feet Dis-charge, ft3/s Lake or reser-voir elev-ation, NGVD, feet Lake or is the approximate location based on the latitude/longitude coordinates The South Branch of the Potomac River in Franklin crested at 22.6 feet during the 1985 Election day floods. Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map?Possible reasons: Note: Your zoom level may have changed. 20.5 Datum of gage is 383.00 ft above North American Vertical Datum of 1988. for river levels within the next 72 hours. provided to the NWS by the gauge owner. Longitude: 78.177778° W, for river levels within the next 72 hours. Water covers the towpath in multiple spots between the Washington Aqueduct Dam and Pennyfield Lock, mileposts 15 to 19 on the C&O Canal. Water inundates 20 to 30 homes and 5 or more businesses in the west end of Hancock. --Water-stage recorder, crest-stage gage, and concrete control. Water begins to enter the canoe shed at Sycamore Island. At Williamsport, the river was expected to … Search by city or zip code. Water begins to overflow into low lying areas. Water covers the towpath between Swains Lock and Pennyfield Lock, mileposts 17 to 19 on the C&O Canal. Water begins flowing out of the open tunnel between the Potomac and lower town Harpers Ferry, flooding the very end of Shenandoah Street. Latitude: 38.949722° N, This is the first interactive flood inundation mapping (FIM) tool for this region. Significant portions of the C&O Canal towpath are flooded between McMahons Mill and Dam Number Four. Portions of the Potomac Heritage Trail begin to flood. NAD83/WGS84. Horizontal Datum: Water also begins to collect on the west end of the CSX Railyard on the West Virginia side. USGS 01646500 POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers. The river reaches danger level for boaters, as defined by the State of Maryland. Several trails on both sides of the river between Great Falls and the Chain Bridge are flooded and will be closed. Latitude: 39.697500° N, Significant portions of the C&O Canal towpath are flooded. Note: Need to Confirm from primary sources: John Bowman (2009) Wheeling - The Birthplace of the American Steamboat. Note: Use the official hydrograph at the top of this web page Prior to June 7, 1930, nonrecording gage, and June 7, 1930 to Jan. 22, 1965, water-stage recorder at site 1 mi upstream on right bank at same gage datum. Ferry service to the island will likely be suspended. 15: River Road is completely flooded in low spots between Shepherdstown and Harpers Ferry. This information is redistributed from Weather.gov and we make no claims as to it’s accuracy, freshness, or reliability. the Range of Possible River Levels, Weather Forecast Office (Baltimore/Washington) Sterling, VA, Chance of Exceeding Levels During Entire Period, Short-term Probabilistic Guidance (Experimental), U.S. Geological Survey (USGS) Data and Site Info for Hancock. Homes and business in Hancock 1932, to Jan. 20, 1937, nonrecording gage on... 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