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Hydrograph River at a Glance Download
Roanoke River at Roa Sewer Plant Stage (ft)Observed: 4.9 ft at 3:20AM Oct 14, 2021Observed: 5 ft at 3:38AM Oct 14, 2021Observed: 4.6 ft at 8:44AM Oct 14, 2021Observed: 4.3 ft at 9:38AM Oct 14, 2021Observed: 4.6 ft at 1:11PM Oct 14, 2021Observed: 4.8 ft at 3:38PM Oct 14, 2021Observed: 5.1 ft at 6:17PM Oct 14, 2021Highest Observation: 5.4 ft at 6:59PM Oct 14, 2021Observed: 5.2 ft at 9:38PM Oct 14, 2021Observed: 4.9 ft at 3:38AM Oct 15, 2021Observed: 4.6 ft at 9:29AM Oct 15, 2021Observed: 4.5 ft at 9:38AM Oct 15, 2021Observed: 4.8 ft at 2:35PM Oct 15, 2021Observed: 4.6 ft at 3:38PM Oct 15, 2021Observed: 5 ft at 5:05PM Oct 15, 2021Observed: 5.3 ft at 6:59PM Oct 15, 2021Observed: 4.9 ft at 3:38AM Oct 16, 2021Observed: 4.6 ft at 9:10AM Oct 16, 2021Observed: 4.5 ft at 9:38AM Oct 16, 2021Observed: 4.8 ft at 11:44AM Oct 16, 2021Observed: 5.1 ft at 3:38PM Oct 16, 2021Observed: 5.1 ft at 9:38PM Oct 16, 2021Observed: 5 ft at 3:38AM Oct 17, 2021Observed: 4.5 ft at 9:38AM Oct 17, 2021Observed: 5 ft at 1:34PM Oct 17, 2021Observed: 4.8 ft at 3:38PM Oct 17, 2021Observed: 5.2 ft at 9:38PM Oct 17, 2021Observed: 4.9 ft at 2:10AM Oct 18, 2021Observed: 4.9 ft at 3:38AM Oct 18, 2021Observed: 4.6 ft at 8:31AM Oct 18, 2021Observed: 4.3 ft at 9:07AM Oct 18, 2021Observed: 4.2 ft at 9:38AM Oct 18, 2021Observed: 4.6 ft at 12:28PM Oct 18, 2021Observed: 5.1 ft at 6:26PM Oct 18, 2021Observed: 5 ft at 7:25PM Oct 18, 2021Observed: 5.2 ft at 9:38PM Oct 18, 2021Observed: 5 ft at 3:38AM Oct 19, 2021Observed: 4.6 ft at 8:37AM Oct 19, 2021Observed: 4.3 ft at 9:34AM Oct 19, 2021Observed: 4.6 ft at 1:04PM Oct 19, 2021Observed: 4.7 ft at 3:38PM Oct 19, 2021Observed: 5 ft at 6:13PM Oct 19, 2021Observed: 5.3 ft at 6:40PM Oct 19, 2021Observed: 5.2 ft at 9:38PM Oct 19, 2021Observed: 4.9 ft at 1:13AM Oct 20, 2021Observed: 4.9 ft at 3:38AM Oct 20, 2021Observed: 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, 2021RSTV2(plotting HGIRR) Graph Created (1:19AM Oct 21, 2021)ObservedLatest observed value: 5.2 ft at 9:38 PM EDT 20-Oct-2021. Flood Stage is 13.5 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 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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