Search by city or zip code. The river was cresting at that hour. Water begins to overflow the banks into low lying areas on the Maryland side of the river near Little Falls. The Potomac River at Harpers Ferry was expected to crest Saturday morning at 23.4 feet, more than 5 feet above flood stage. Flood stage is at 18 feet. Water reaches the top of the ferry landing for Sycamore Island. 20.5 Flood stage at the time in the shallow riverbed was only 7 feet. Significant portions of the C&O Canal towpath are flooded. The boat ramp at Four Locks is covered by water. Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps, Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps, Older USGS topographic maps, NGVD29 benchmarks, Older USGS topographic maps, MSL benchmarks. Water covers the road to the maintenance shop for the National Park Service near Hancock. At Point of Rocks, flood stage is … Water reaches the clubhouse on Sycamore Island. Note: Need to Confirm from primary sources: John Bowman (2009) Wheeling - The Birthplace of the American Steamboat. 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. Water floods low spots on East Main Street in Hancock. The South Branch of the Potomac River in Franklin crested at 22.6 feet during the 1985 Election day floods. For details. The west end of the Potomac Airpark runway begins to flood. Ferry service to the island will likely be suspended. Latitude: 39.697500° N, A 0.2-percent chance equates to a 1/500 chance of occurring in a year. The river is at danger level for boaters as defined by the State of Maryland. 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. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers. Water begins to enter the canoe shed at Sycamore Island. Latitude/Longitude Disclaimer: The gauge location shown in the above map LOUDOUN COUNTY, Va. (WUSA9) — Water levels rose along the banks of the Potomac River Saturday night. Horizontal Datum: 13: River Road near Shepherdstown begins to flood. 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 PROVISIONAL DATA SUBJECT TO REVISION. The Blockhouse Point Park is flooded. 5.5: Water reaches the top of the ferry landing for Sycamore Island. Ferry service to the island will likely be suspended. The west end of the Potomac Airpark runway begins to flood. For details. Half the parking lot there is also covered. The Potomac River inched toward River Road near Shepherdstown, W.Va. Thursday afternoon. 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. EXTREMES OUTSIDE PERIOD OF RECORD. There is approximately a foot of water in the clubhouse on Sycamore Island. Water reaches the top of the Hancock boat ramp and begins to spill over into the adjacent parking lot. The system reduces flood risk for Potomac River flow rates up to 700,000 cubic feet per second. Water inundates 20 to 30 homes and 5 or more businesses in the west end of Hancock. for river levels within the next 72 hours. See the current river level, flood stages and level predictions for the Potomac River Level Harpers Ferry. Water begins to flood low spots of West Main Street in Hancock. These trails will be closed. Search by city or zip code. There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. Several trails on both sides of the river between Great Falls and the Chain Bridge are flooded and will be closed. Water covers the towpath in many areas. Latitude: 38.949722° N, 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 Datum of gage is 37.20 ft above North American Vertical Datum of 1988. USGS 01613000 POTOMAC RIVER AT HANCOCK, MD. 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. Water goes over the banks of the Potomac near the mouth of the Opequon River. Debris was a significant problem, with piles more than 10 feet high near the Naval Laboratory remaining after the water receded. Press enter or select the go button to submit request, Used to Estimate the Chance of Flooding and Note: Use the official hydrograph at the top of this web page Additionally, access to Potomac Airpark may be restricted due to backwater. If you notice any errors in the below information, please contact our. The heavy rainfall caused massive runoff into the area tributaries, including the Potomac River. ... --Flood of June 2, 1889, was of approximately the same magnitude as that of March 19, 1936. This is the first interactive flood inundation mapping (FIM) tool for this region. Water may begin to inundate low points of the CSX Railroad tracks on the West Virginia side of the river due to backwater. 5: Portions of the Potomac Heritage Trail begin to flood. for river levels within the next 72 hours. --Water-stage recorder, crest-stage gage, and concrete control. Press enter or select the go button to submit request, Used to Estimate the Chance of Flooding and Most areas along the Potomac saw increasing river levels for days before a peak on October 16. Water covers the towpath in multiple spots between the Washington Aqueduct Dam and Pennyfield Lock, mileposts 15 to 19 on the C&O Canal. Upper portions of the River Trail at Great Falls National Park begin to flood and will be closed. Most of the town's center, its commercial district, and the Pendleton County Courthouse were constructed following the 1924 fire. USGS 01646500 POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA. 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. The river reaches caution level for boaters, as defined by the State of Maryland. ... --Water-stage recorder and crest-stage gage. Horizontal Datum: NAD83/WGS84. Portions of the Potomac Heritage Trail begin to flood. Virtually all of the old federal armory site at historic Harpers Ferry is flooded. 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. This information is redistributed from Weather.gov and we make no claims as to it’s accuracy, freshness, or reliability. NAD83/WGS84. Water begins flowing out of the open tunnel between the Potomac and lower town Harpers Ferry, flooding the very end of Shenandoah Street. In Leesburg, Va., the river crested in major flood stage with a crest of 22.90 feet and a raging flow of 35,600 cubic feet per second. Conditions for boating will be extremely hazardous. 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).. Latitude/Longitude Disclaimer: The gauge location shown in the above map 15: River Road is completely flooded in low spots between Shepherdstown and Harpers Ferry. Fast moving water and changing currents can be expected. provided to the NWS by the gauge owner. Water begins to affect portions of the Billy Goat Trail between Great Falls and Carderock. Water covers the towpath between Swains Lock and Pennyfield Lock, mileposts 17 to 19 on the C&O Canal. Note: Use the official hydrograph at the top of this web page Most of the C&O Canal towpath downstream of Pennyfield is flooded. Longitude: 77.127778° W, The Potomac River runs 405 miles (652 km) from Fairfax Stone Historical Monument State Park in West Virginia on the Allegheny Plateau to Point Lookout, Maryland, and drains 14,679 square miles (38,020 km 2).The length of the river from the junction of its North and South Branches to Point Lookout is 302 miles (486 km). At 7 a.m., the Potomac River was at 15.1 feet at Harpers Ferry. 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. The river reaches caution level for boaters as defined by the State of Maryland. Water approaches the highest point on Main Street. At Williamsport, the river was expected to … Backwaters from the Shenandoah River flood even more of Shenandoah Street, including the shuttle bus pavilion. The C&O Canal overflows at the Great Falls Tavern. Longitude: 78.177778° W, For more information on your flood risk go to www.floodsmart.gov. 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. is the approximate location based on the latitude/longitude coordinates Water begins to overflow into low lying areas. 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. Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps, Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps, Older USGS topographic maps, NGVD29 benchmarks, Older USGS topographic maps, MSL benchmarks. FEMA's National Flood Hazard Layers not showing? Fast moving water and changing currents will be experienced. Upper portions of the River Trail at Great Falls National Park begin to flood and will be closed. These maps help users visualize when and where various stages of flooding could impact roads, infrastructure, and resources in communities along the Potomac River and four tributaries: the Anacostia River, Cameron Run, Oxon Run, and Four Mile Run. provided to the NWS by the gauge owner. Water overflows the overlooks at Great Falls National Park and approaches the lower level of the visitors center. Significant portions of the C&O Canal towpath are flooded between McMahons Mill and Dam Number Four. COOPERATION. The information below shows the Potomac River level in Harpers Ferry, WV at a glance. The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. At these levels, conditions are extremely hazardous. Most of the C&O Canal towpath from Pennyfield downstream is flooded. The FEMA Web Mapping Service (WMS) is down. The river reaches danger level for boaters, as defined by the State of Maryland. Water begins to inundate some yards on the west end of Hancock. ... --Water-stage recorder, crest-stage gage, and concrete control. 18, 1936, to Jan. 20, 1937, nonrecording gage, on former highway bridge just upstream at same gage datum. Datum of gage is 37.20 ft above North American Vertical Datum of 1988. Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map?Possible reasons: Note: Your zoom level may have changed. Oct. 1, 1932, to Jan. 5, 1935, Mar. 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: … Water reaches the retaining wall at Overlook 1 at Great Falls National Park but does not overtop it. 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. If you notice any errors in the below information, please contact our. Water also begins to collect on the west end of the CSX Railyard on the West Virginia side. is the approximate location based on the latitude/longitude coordinates 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 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). Please change your bookmarks and links. Datum of gage is 383.00 ft above North American Vertical Datum of 1988. Flood stage in Harpers Ferry is 18 feet. Water begins to inundate homes and business in Hancock. 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. Another disaster struck the town in 1985. Station Number Station name Date/Time Gage height, feet Dis-charge, ft3/s Lake or reser-voir elev-ation, NGVD, feet Lake or The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. --Flood in June 1889 reached a stage of 30 ft, from floodmarks, discharge, 56,000 ft 3 /s. 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