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Hydrograph River at a Glance Download
Roanoke River at Roa Sewer Plant Stage (ft)Observed: 5.1 ft at 2:09PM Apr 29, 2021Observed: 5.2 ft at 3:42PM Apr 29, 2021Observed: 5.1 ft at 9:43PM Apr 29, 2021Observed: 4.7 ft at 3:42PM Apr 30, 2021Observed: 5 ft at 6:39PM Apr 30, 2021Observed: 5.2 ft at 9:42PM Apr 30, 2021Observed: 5 ft at 3:42AM May 01, 2021Observed: 4.7 ft at 7:48AM May 01, 2021Observed: 4.5 ft at 9:42AM May 01, 2021Observed: 4.8 ft at 1:54PM May 01, 2021Observed: 5.2 ft at 7:27PM May 01, 2021Observed: 5.3 ft at 9:42PM May 01, 2021Observed: 5 ft at 1:14AM May 02, 2021Observed: 4.3 ft at 9:42AM May 02, 2021Observed: 4.6 ft at 1:44PM May 02, 2021Observed: 4.6 ft at 3:42PM May 02, 2021Observed: 4.9 ft at 4:42PM May 02, 2021Observed: 5.2 ft at 7:06PM May 02, 2021Observed: 4.9 ft at 1:35AM May 03, 2021Observed: 4.8 ft at 9:42AM May 03, 2021Observed: 4.8 ft at 3:42PM May 03, 2021Observed: 5.1 ft at 7:08PM May 03, 2021Observed: 5.2 ft at 9:42PM May 03, 2021Observed: 4.9 ft at 3:42AM May 04, 2021Observed: 4.6 ft at 7:56AM May 04, 2021Observed: 4.3 ft at 9:11AM May 04, 2021Observed: 4.3 ft at 9:42AM May 04, 2021Observed: 4.6 ft at 1:08PM May 04, 2021Observed: 4.9 ft at 2:21PM May 04, 2021Observed: 5.4 ft at 2:41PM May 04, 2021Highest Observation: 6.5 ft at 3:21PM May 04, 2021Observed: 6.4 ft at 3:42PM May 04, 2021Observed: 6 ft at 4:05PM May 04, 2021Observed: 5.7 ft at 4:20PM May 04, 2021Observed: 5.2 ft at 9:42PM May 04, 2021Observed: 4.9 ft at 1:02AM May 05, 2021Observed: 4.9 ft at 3:42AM May 05, 2021Observed: 4.8 ft at 9:42AM May 05, 2021Observed: 4.9 ft at 3:42PM May 05, 2021Observed: 5.2 ft at 6:59PM May 05, 2021Observed: 5.2 ft at 9:42PM May 05, 2021Observed: 5.1 ft at 3:42AM May 06, 2021Observed: 4.8 ft at 7:32AM May 06, 2021Observed: 4.4 ft at 8:11AM May 06, 2021Observed: 4.5 ft at 9:42AM May 06, 2021RSTV2(plotting HGIRR) Graph Created (11:50AM May 6, 2021)ObservedLatest observed value: 4.5 ft at 9:42 AM EDT 6-May-2021. Flood Stage is 13.5 ft
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Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Roanoke River at Roa Sewer Plant. Only observed stages are available for this point.
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Flood Categories (in feet)
Major Flood Stage: 21
Moderate Flood Stage: 16
Flood Stage: 13.5
Action Stage: 11
Low Stage (in feet): 0

Historic Crests
(1) 19.30 ft on 07/04/2013
(2) 18.30 ft on 09/30/2015
(3) 17.60 ft on 11/12/2020
(4) 17.20 ft on 06/27/2006
(5) 15.80 ft on 06/17/2020
(6) 13.10 ft on 10/12/2018
(7) 12.50 ft on 02/07/2020

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.60 ft on 11/12/2020
(2) 15.80 ft on 06/17/2020
(3) 12.50 ft on 02/07/2020
(4) 13.10 ft on 10/12/2018
(5) 18.30 ft on 09/30/2015
(6) 19.30 ft on 07/04/2013
(7) 17.20 ft on 06/27/2006

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
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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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11 THE RIVER RECEDES WITHIN ITS BANKS IN THE VICINITY OF THE GAGE.
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Latitude: 37.266944° N, Longitude: 79.910833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 13.5 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
Blacksburg Weather Forecast Office
1750 Forecast Drive
Blacksburg, VA 24060
(540) 552-0084
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Page last modified: 2-Nov-2020 7:30 PM
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