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Hydrograph River at a Glance Download
Patapsco River near Elkridge below Patapsco Valley State Park Stage (ft)Highest Observation: 9.65 ft at 1:40PM May 05, 2024Observed: 9.55 ft at 2:45PM May 05, 2024Observed: 9.48 ft at 3:40PM May 05, 2024Observed: 9.47 ft at 4:40PM May 05, 2024Observed: 9.45 ft at 5:40PM May 05, 2024Observed: 9.42 ft at 6:40PM May 05, 2024Observed: 9.4 ft at 7:40PM May 05, 2024Observed: 9.37 ft at 8:40PM May 05, 2024Observed: 9.34 ft at 9:40PM May 05, 2024Observed: 9.32 ft at 10:40PM May 05, 2024Observed: 9.3 ft at 11:40PM May 05, 2024Observed: 9.26 ft at 1:40AM May 06, 2024Observed: 9.23 ft at 2:40AM May 06, 2024Observed: 9.2 ft at 3:40AM May 06, 2024Observed: 9.17 ft at 4:40AM May 06, 2024Observed: 9.13 ft at 6:40AM May 06, 2024Observed: 9.11 ft at 7:40AM May 06, 2024Observed: 9.09 ft at 8:40AM May 06, 2024Observed: 9.07 ft at 9:40AM May 06, 2024Observed: 9.06 ft at 10:40AM May 06, 2024Observed: 9.04 ft at 11:40AM May 06, 2024Observed: 9.04 ft at 12:40PM May 06, 2024Observed: 9.02 ft at 1:40PM May 06, 2024Observed: 9.01 ft at 2:40PM May 06, 2024Observed: 9 ft at 3:40PM May 06, 2024Observed: 8.99 ft at 4:40PM May 06, 2024Observed: 8.98 ft at 5:40PM May 06, 2024Observed: 8.97 ft at 6:40PM May 06, 2024Observed: 8.96 ft at 7:40PM May 06, 2024Observed: 8.96 ft at 8:40PM May 06, 2024Observed: 8.95 ft at 9:40PM May 06, 2024Observed: 8.96 ft at 10:40PM May 06, 2024Observed: 8.96 ft at 11:40PM May 06, 2024Observed: 8.95 ft at 12:40AM May 07, 2024Observed: 8.94 ft at 1:40AM May 07, 2024Observed: 8.93 ft at 2:40AM May 07, 2024Observed: 8.92 ft at 3:40AM May 07, 2024Observed: 8.92 ft at 4:40AM May 07, 2024Observed: 8.91 ft at 5:40AM May 07, 2024Observed: 8.9 ft at 6:40AM May 07, 2024Observed: 8.9 ft at 7:40AM May 07, 2024Observed: 8.88 ft at 8:40AM May 07, 2024Observed: 8.88 ft at 9:40AM May 07, 2024Observed: 8.88 ft at 10:40AM May 07, 2024Observed: 8.87 ft at 11:40AM May 07, 2024Observed: 8.88 ft at 12:40PM May 07, 2024Observed: 8.87 ft at 1:40PM May 07, 2024Observed: 8.86 ft at 4:40PM May 07, 2024Observed: 8.85 ft at 5:40PM May 07, 2024Observed: 8.86 ft at 6:40PM May 07, 2024Observed: 8.86 ft at 7:40PM May 07, 2024Observed: 8.84 ft at 8:40PM May 07, 2024Observed: 8.83 ft at 9:40PM May 07, 2024Observed: 8.83 ft at 10:40PM May 07, 2024Observed: 8.81 ft at 11:40PM May 07, 2024Observed: 8.81 ft at 12:40AM May 08, 2024Observed: 8.8 ft at 1:40AM May 08, 2024Observed: 8.8 ft at 2:40AM May 08, 2024Observed: 8.79 ft at 3:40AM May 08, 2024Observed: 8.79 ft at 4:40AM May 08, 2024Observed: 8.79 ft at 5:40AM May 08, 2024Observed: 8.78 ft at 6:40AM May 08, 2024Observed: 8.78 ft at 7:40AM May 08, 2024Observed: 8.78 ft at 8:40AM May 08, 2024Observed: 8.78 ft at 9:40AM May 08, 2024Observed: 8.78 ft at 10:40AM May 08, 2024Observed: 8.77 ft at 11:40AM May 08, 2024Observed: 8.78 ft at 12:40PM May 08, 2024Observed: 8.77 ft at 1:40PM May 08, 2024Observed: 8.78 ft at 2:40PM May 08, 2024Observed: 8.77 ft at 3:40PM May 08, 2024Observed: 8.76 ft at 4:40PM May 08, 2024Observed: 8.77 ft at 5:40PM May 08, 2024Observed: 8.77 ft at 6:40PM May 08, 2024Observed: 8.78 ft at 7:40PM May 08, 2024Observed: 8.78 ft at 8:40PM May 08, 2024Observed: 8.79 ft at 9:40PM May 08, 2024Observed: 8.78 ft at 10:40PM May 08, 2024Observed: 8.79 ft at 11:40PM May 08, 2024Observed: 8.79 ft at 12:40AM May 09, 2024Observed: 8.79 ft at 1:40AM May 09, 2024Observed: 8.78 ft at 2:40AM May 09, 2024Observed: 8.77 ft at 3:40AM May 09, 2024Observed: 8.76 ft at 4:40AM May 09, 2024Observed: 8.75 ft at 5:45AM May 09, 2024Observed: 8.73 ft at 6:40AM May 09, 2024Observed: 8.73 ft at 7:40AM May 09, 2024Observed: 8.73 ft at 8:40AM May 09, 2024Observed: 8.73 ft at 9:40AM May 09, 2024Observed: 8.72 ft at 10:40AM May 09, 2024Observed: 8.72 ft at 11:40AM May 09, 2024Observed: 8.71 ft at 12:40PM May 09, 2024Observed: 8.71 ft at 1:40PM May 09, 2024Observed: 8.7 ft at 2:40PM May 09, 2024Observed: 8.7 ft at 3:40PM May 09, 2024Observed: 8.7 ft at 4:40PM May 09, 2024Observed: 8.69 ft at 5:40PM May 09, 2024Observed: 8.68 ft at 6:40PM May 09, 2024Observed: 8.68 ft at 7:40PM May 09, 2024Observed: 8.66 ft at 8:40PM May 09, 2024Observed: 8.67 ft at 9:40PM May 09, 2024Observed: 8.66 ft at 10:40PM May 09, 2024Observed: 8.65 ft at 11:40PM May 09, 2024Observed: 8.68 ft at 12:40AM May 10, 2024Observed: 8.76 ft at 1:40AM May 10, 2024Observed: 8.75 ft at 2:40AM May 10, 2024Observed: 8.74 ft at 3:40AM May 10, 2024Observed: 8.78 ft at 4:40AM May 10, 2024Observed: 8.82 ft at 5:40AM May 10, 2024Observed: 8.83 ft at 6:40AM May 10, 2024Observed: 8.8 ft at 7:40AM May 10, 2024Observed: 8.76 ft at 8:40AM May 10, 2024Observed: 8.74 ft at 9:40AM May 10, 2024Observed: 8.72 ft at 10:40AM May 10, 2024Observed: 8.75 ft at 11:40AM May 10, 2024Observed: 8.78 ft at 12:40PM May 10, 2024ELKM2(plotting HGIRR) Graph Created (1:26PM May 10, 2024)ObservedLatest observed value: 8.78 ft at 12:40 PM EDT 10-May-2024. Flood Stage is 16 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Patapsco River near Elkridge below Patapsco Valley State Park. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - near Elkridge at Patapsco Valley State Park Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 16
Action Stage: 15
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
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Gauge LocationGauge Map Marker
 Disclaimer
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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If you notice any errors in the below information, please contact our Webmaster
16 Hammonds Ferry Road floods and is closed at the Patapsco River. Backwater flooding likely also leads to the closure of Furnace Avenue in Elkridge.
About This Location Collapse

Latitude: 39.214722° N, Longitude: 76.704444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 16 ft  
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(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.
NWS Information
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(571) 888-3500
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