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Hydrograph River at a Glance Download
Backlick Run at Van Dorn Street in Alexandria Stage (ft)Observed: -0.03 ft at 8:05AM Sep 20, 2021Observed: -0.03 ft at 8:05PM Sep 20, 2021Observed: -0.03 ft at 8:05AM Sep 21, 2021Observed: 0.12 ft at 3:30PM Sep 22, 2021Observed: 0 ft at 3:40PM Sep 22, 2021Observed: 0.22 ft at 4:20PM Sep 22, 2021Observed: 0.11 ft at 4:40PM Sep 22, 2021Observed: 0 ft at 5:10PM Sep 22, 2021Observed: -0.04 ft at 8:05PM Sep 22, 2021Observed: 0.07 ft at 3:05AM Sep 23, 2021Observed: 0.18 ft at 3:20AM Sep 23, 2021Observed: 0.31 ft at 3:25AM Sep 23, 2021Observed: 0.44 ft at 3:30AM Sep 23, 2021Observed: 0.54 ft at 3:35AM Sep 23, 2021Observed: 0.76 ft at 3:40AM Sep 23, 2021Observed: 0.9 ft at 3:45AM Sep 23, 2021Observed: 1.06 ft at 3:50AM Sep 23, 2021Observed: 1.17 ft at 3:55AM Sep 23, 2021Observed: 1.3 ft at 4:00AM Sep 23, 2021Observed: 1.81 ft at 4:05AM Sep 23, 2021Observed: 2.3 ft at 4:10AM Sep 23, 2021Observed: 2.51 ft at 4:15AM Sep 23, 2021Highest Observation: 2.68 ft at 4:20AM Sep 23, 2021Observed: 2.47 ft at 4:25AM Sep 23, 2021Observed: 2.13 ft at 4:30AM Sep 23, 2021Observed: 2.01 ft at 4:35AM Sep 23, 2021Observed: 1.83 ft at 4:40AM Sep 23, 2021Observed: 1.68 ft at 4:45AM Sep 23, 2021Observed: 1.34 ft at 4:50AM Sep 23, 2021Observed: 1.24 ft at 4:55AM Sep 23, 2021Observed: 1.13 ft at 5:00AM Sep 23, 2021Observed: 0.9 ft at 5:10AM Sep 23, 2021Observed: 0.79 ft at 5:20AM Sep 23, 2021Observed: 0.69 ft at 5:25AM Sep 23, 2021Observed: 0.57 ft at 5:35AM Sep 23, 2021Observed: 0.46 ft at 5:50AM Sep 23, 2021Observed: 0.35 ft at 6:05AM Sep 23, 2021Observed: 0.46 ft at 6:35AM Sep 23, 2021Observed: 0.67 ft at 7:50AM Sep 23, 2021Observed: 0.25 ft at 9:45AM Sep 23, 2021Observed: 0.04 ft at 10:40AM Sep 23, 2021Observed: -0.03 ft at 8:05PM Sep 23, 2021Observed: -0.04 ft at 8:05AM Sep 24, 2021Observed: -0.03 ft at 8:30AM Sep 24, 2021Observed: -0.08 ft at 8:05PM Sep 24, 2021BLRV2(plotting HGIRR) Graph Created (6:10AM Sep 25, 2021)ObservedLatest observed value: -0.08 ft at 8:05 PM EDT 24-Sep-2021. Flood Stage is 6 ft
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Tabular Data (UTC)
Tabular Data (EDT)
XML Data
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Datum: Not Available
NOTE: Forecasts are not available for the Backlick Run at Van Dorn Street in Alexandria. Only observed stages are available for this point.
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Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 6
Action Stage: 4
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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Latitude: 38.803333° N, Longitude: 77.133889° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 6 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 2-Nov-2020 7:30 PM
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