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Hydrograph River at a Glance Download
Roanoke River at Roa Sewer Plant Stage (ft)Observed: 4.6 ft at 8:46AM Oct 20, 2021Observed: 4.3 ft at 9:38AM Oct 20, 2021Observed: 4.7 ft at 1:22PM Oct 20, 2021Observed: 5.3 ft at 6:37PM Oct 20, 2021Observed: 5.2 ft at 9:38PM Oct 20, 2021Observed: 4.9 ft at 2:43AM Oct 21, 2021Observed: 4.9 ft at 3:38AM Oct 21, 2021Observed: 4.6 ft at 8:43AM Oct 21, 2021Observed: 4.3 ft at 9:31AM Oct 21, 2021Observed: 4.6 ft at 1:19PM Oct 21, 2021Observed: 4.9 ft at 2:31PM Oct 21, 2021Observed: 4.8 ft at 3:38PM Oct 21, 2021Observed: 5.1 ft at 9:38PM Oct 21, 2021Observed: 4.9 ft at 3:38AM Oct 22, 2021Observed: 4.7 ft at 9:38AM Oct 22, 2021Observed: 5 ft at 2:14PM Oct 22, 2021Observed: 4.8 ft at 3:38PM Oct 22, 2021Observed: 5.1 ft at 6:26PM Oct 22, 2021Observed: 5.2 ft at 9:38PM Oct 22, 2021Observed: 4.8 ft at 2:08AM Oct 23, 2021Observed: 4.9 ft at 3:38AM Oct 23, 2021Observed: 4.5 ft at 9:38AM Oct 23, 2021Observed: 4.8 ft at 2:02PM Oct 23, 2021Observed: 4.7 ft at 3:38PM Oct 23, 2021Observed: 5 ft at 6:20PM Oct 23, 2021Highest Observation: 5.4 ft at 7:02PM Oct 23, 2021Observed: 5.1 ft at 9:38PM Oct 23, 2021Observed: 4.8 ft at 1:47AM Oct 24, 2021Observed: 4.9 ft at 3:38AM Oct 24, 2021Observed: 4.7 ft at 9:38AM Oct 24, 2021Observed: 4.4 ft at 10:14AM Oct 24, 2021Observed: 4.7 ft at 2:35PM Oct 24, 2021Observed: 4.7 ft at 3:38PM Oct 24, 2021Observed: 5.3 ft at 6:59PM Oct 24, 2021Observed: 5.1 ft at 9:38PM Oct 24, 2021Observed: 4.9 ft at 3:38AM Oct 25, 2021Observed: 4.7 ft at 9:38AM Oct 25, 2021Observed: 4.4 ft at 10:20AM Oct 25, 2021Observed: 4.7 ft at 3:23PM Oct 25, 2021Observed: 4.8 ft at 3:38PM Oct 25, 2021Observed: 5.1 ft at 4:50PM Oct 25, 2021Observed: 5 ft at 9:38PM Oct 25, 2021Observed: 4.9 ft at 3:38AM Oct 26, 2021Observed: 4.6 ft at 8:59AM Oct 26, 2021Observed: 4.6 ft at 9:38AM Oct 26, 2021Observed: 4.9 ft at 11:35AM Oct 26, 2021Observed: 4.9 ft at 3:38PM Oct 26, 2021Observed: 5.2 ft at 6:35PM Oct 26, 2021Observed: 4.9 ft at 3:38AM Oct 27, 2021RSTV2(plotting HGIRR) Graph Created (5:04AM Oct 27, 2021)ObservedLatest observed value: 4.9 ft at 3:38 AM EDT 27-Oct-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.

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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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