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Hydrograph River at a Glance Download
Unnamed Tributary at Greenbelt Stage (ft)Highest Observation: 0.22 ft at 8:05AM Jun 29, 2020Observed: 0.14 ft at 10:30AM Jun 29, 2020Observed: 0.18 ft at 10:35AM Jun 29, 2020Highest Observation: 0.22 ft at 10:35PM Jun 29, 2020Observed: 0.14 ft at 8:45AM Jun 30, 2020Observed: 0.1 ft at 10:35AM Jun 30, 2020Observed: 0.18 ft at 7:55PM Jun 30, 2020Observed: 0.18 ft at 10:35PM Jun 30, 2020Observed: 0.14 ft at 10:35AM Jul 01, 2020Observed: 0.18 ft at 10:35PM Jul 01, 2020Observed: 0.1 ft at 9:10AM Jul 02, 2020Observed: 0.1 ft at 10:35AM Jul 02, 2020Observed: 0.18 ft at 8:20PM Jul 02, 2020Observed: 0.18 ft at 10:35PM Jul 02, 2020Observed: 0.1 ft at 9:00AM Jul 03, 2020Observed: 0.1 ft at 10:35AM Jul 03, 2020Observed: 0.18 ft at 8:55PM Jul 03, 2020GRNM2(plotting HGIRR) Graph Created (10:39PM Jul 3, 2020)ObservedLatest observed value: 0.18 ft at 8:55 PM EDT 3-Jul-2020.
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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 Unnamed Tributary at Greenbelt. Only observed stages are available for this point.
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Flood Categories (in feet)
Not Available

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: 38.989722° N, Longitude: 76.846111° 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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National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 1-Mar-2019 12:35 AM
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