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Hydrograph River at a Glance Download
Unnamed Tributary below Greenbelt Lake near Greenbelt Stage (ft)Observed: 1.49 ft at 6:35PM Sep 23, 2021Observed: 1.55 ft at 8:35PM Sep 23, 2021Observed: 1.65 ft at 2:10AM Sep 24, 2021Highest Observation: 1.67 ft at 2:35AM Sep 24, 2021Observed: 1.63 ft at 8:35AM Sep 24, 2021Observed: 1.53 ft at 9:25AM Sep 24, 2021Observed: 1.43 ft at 10:05AM Sep 24, 2021Observed: 1.33 ft at 10:40AM Sep 24, 2021Observed: 1.22 ft at 10:55AM Sep 24, 2021Observed: 1.12 ft at 11:30AM Sep 24, 2021Observed: 1.04 ft at 2:35PM Sep 24, 2021Observed: 1.14 ft at 4:55PM Sep 24, 2021Observed: 1.24 ft at 5:50PM Sep 24, 2021Observed: 1.35 ft at 7:15PM Sep 24, 2021Observed: 1.45 ft at 7:55PM Sep 24, 2021Observed: 1.49 ft at 8:35PM Sep 24, 2021Observed: 1.59 ft at 11:10PM Sep 24, 2021Observed: 1.61 ft at 2:35AM Sep 25, 2021Observed: 1.59 ft at 8:35AM Sep 25, 2021Observed: 1.49 ft at 9:30AM Sep 25, 2021Observed: 1.39 ft at 10:10AM Sep 25, 2021Observed: 1.28 ft at 10:35AM Sep 25, 2021Observed: 1.18 ft at 10:55AM Sep 25, 2021Observed: 1.08 ft at 11:25AM Sep 25, 2021Observed: 1.06 ft at 2:35PM Sep 25, 2021Observed: 1.16 ft at 5:25PM Sep 25, 2021Observed: 1.26 ft at 6:20PM Sep 25, 2021Observed: 1.37 ft at 7:30PM Sep 25, 2021Observed: 1.45 ft at 8:35PM Sep 25, 2021Observed: 1.53 ft at 2:35AM Sep 26, 2021Observed: 1.55 ft at 8:35AM Sep 26, 2021Observed: 1.45 ft at 9:10AM Sep 26, 2021Observed: 1.35 ft at 10:10AM Sep 26, 2021Observed: 1.24 ft at 10:45AM Sep 26, 2021Observed: 1.14 ft at 11:10AM Sep 26, 2021Observed: 1.04 ft at 1:35PM Sep 26, 2021Observed: 1.02 ft at 2:35PM Sep 26, 2021Observed: 1.12 ft at 4:45PM Sep 26, 2021Observed: 1.22 ft at 5:35PM Sep 26, 2021Observed: 1.33 ft at 7:15PM Sep 26, 2021Observed: 1.43 ft at 8:00PM Sep 26, 2021Observed: 1.47 ft at 8:35PM Sep 26, 2021Observed: 1.57 ft at 11:35PM Sep 26, 2021Observed: 1.59 ft at 2:35AM Sep 27, 2021Observed: 1.55 ft at 8:35AM Sep 27, 2021Observed: 1.45 ft at 9:15AM Sep 27, 2021Observed: 1.35 ft at 9:55AM Sep 27, 2021Observed: 1.24 ft at 10:35AM Sep 27, 2021Observed: 1.14 ft at 10:55AM Sep 27, 2021Observed: 1.04 ft at 11:35AM Sep 27, 2021Observed: 0.98 ft at 2:35PM Sep 27, 2021Observed: 1.08 ft at 4:45PM Sep 27, 2021Observed: 1.18 ft at 6:05PM Sep 27, 2021Observed: 1.28 ft at 7:25PM Sep 27, 2021Observed: 1.37 ft at 8:35PM Sep 27, 2021Observed: 1.47 ft at 1:35AM Sep 28, 2021Observed: 1.47 ft at 2:35AM Sep 28, 2021Observed: 1.43 ft at 8:35AM Sep 28, 2021Observed: 1.33 ft at 8:55AM Sep 28, 2021Observed: 1.06 ft at 2:35PM Sep 28, 2021GBLM2(plotting HGIRR) Graph Created (4:11PM Sep 28, 2021)ObservedLatest observed value: 1.06 ft at 2:35 PM EDT 28-Sep-2021.
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Tabular Data (EDT)
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Datum: Not Available
NOTE: Forecasts are not available for the Unnamed Tributary below Greenbelt Lake near Greenbelt. Only observed stages are available for this point.
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Flood Categories (in feet)
Not Available

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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: 39.002778° N, Longitude: 76.893333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available  
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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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. For details, please click here.
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(Baltimore/Washington) Sterling Weather Forecast Office
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Sterling, VA 20166
(703) 996-2200
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Page last modified: 2-Nov-2020 7:30 PM
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