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Hydrograph River at a Glance Download
Unnamed Tributary at Greenbelt Stage (ft)Observed: 4.64 ft at 9:55AM Jan 29, 2023Observed: 4.64 ft at 10:20AM Jan 29, 2023Observed: 4.6 ft at 10:20PM Jan 29, 2023Observed: 4.6 ft at 10:20AM Jan 30, 2023Highest Observation: 4.68 ft at 1:25PM Jan 30, 2023Observed: 4.6 ft at 6:10PM Jan 30, 2023Observed: 4.6 ft at 10:20PM Jan 30, 2023Observed: 4.6 ft at 10:20AM Jan 31, 2023Observed: 4.6 ft at 10:20PM Jan 31, 2023Observed: 4.56 ft at 10:20AM Feb 01, 2023Observed: 4.64 ft at 2:50PM Feb 01, 2023Observed: 4.56 ft at 4:15PM Feb 01, 2023Observed: 4.52 ft at 10:20PM Feb 01, 2023Observed: 4.6 ft at 9:00AM Feb 02, 2023Observed: 4.52 ft at 9:10AM Feb 02, 2023Observed: 4.6 ft at 9:25AM Feb 02, 2023Highest Observation: 4.68 ft at 9:30AM Feb 02, 2023Highest Observation: 4.68 ft at 10:20AM Feb 02, 2023Highest Observation: 4.68 ft at 10:20PM Feb 02, 2023Observed: 4.6 ft at 8:55AM Feb 03, 2023GRNM2(plotting HGIRR) Graph Created (9:11AM Feb 3, 2023)ObservedLatest observed value: 4.6 ft at 8:55 AM EST 3-Feb-2023.
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Tabular Data (UTC)
Tabular Data (EST)
XML Data
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Datum: Not Available
NOTE: Stage may be affected by ice.

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

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Currently none available.

Recent Crests
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Low Water Records
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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: 38.989722° 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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Page last modified: 2-Nov-2020 7:30 PM
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