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Hydrograph River at a Glance Download
Southwest Branch near Largo / Harry S Truman Dr Stage (ft)Observed: 1.02 ft at 9:25PM Jan 30, 2023Observed: 0.98 ft at 9:25AM Jan 31, 2023Observed: 1.06 ft at 10:25AM Jan 31, 2023Highest Observation: 1.14 ft at 12:25PM Jan 31, 2023Observed: 1.06 ft at 5:10PM Jan 31, 2023Observed: 0.98 ft at 6:55PM Jan 31, 2023Observed: 0.9 ft at 9:15PM Jan 31, 2023Observed: 0.94 ft at 9:25PM Jan 31, 2023Observed: 0.86 ft at 10:40PM Jan 31, 2023Observed: 0.82 ft at 9:25AM Feb 01, 2023Observed: 0.74 ft at 12:15PM Feb 01, 2023Observed: 0.74 ft at 9:25PM Feb 01, 2023Observed: 0.7 ft at 9:25AM Feb 02, 2023Observed: 0.62 ft at 10:55AM Feb 02, 2023Observed: 0.7 ft at 5:25PM Feb 02, 2023Observed: 0.66 ft at 9:25PM Feb 02, 2023Observed: 0.66 ft at 9:25AM Feb 03, 2023Observed: 0.74 ft at 9:25PM Feb 03, 2023Observed: 0.66 ft at 3:50AM Feb 04, 2023Observed: 0.62 ft at 9:25AM Feb 04, 2023Observed: 0.54 ft at 12:50PM Feb 04, 2023Observed: 0.62 ft at 2:25PM Feb 04, 2023HTNM2(plotting HGIRR) Graph Created (8:40PM Feb 4, 2023)ObservedLatest observed value: 0.62 ft at 2:25 PM EST 4-Feb-2023. Flood Stage is 11 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
NOTE: Stage may be affected by ice.

NOTE: Forecasts are not available for the Southwest Branch near Largo / Harry S Truman Dr. Only observed stages are available for this point.

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Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 13
Flood Stage: 11
Action Stage: 7
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
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: 38.876111° N, Longitude: 76.826667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11 ft  
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available  
NGVD 29 Not Available Not Available  
MSL Not Available Not Available  
Other Not Available Not Available  
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Sterling, VA 20166
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Page last modified: 2-Nov-2020 7:30 PM
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