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Hydrograph River at a Glance Download
North Fork Roanoke River at Ironto Stage (ft)Flow (kcfs)Observed: 0.9 ft at 10:14PM Oct 23, 2020Observed: 1 ft at 10:14AM Oct 24, 2020Observed: 0.9 ft at 4:14PM Oct 24, 2020Observed: 1 ft at 10:14PM Oct 24, 2020Observed: 1 ft at 10:14AM Oct 25, 2020Observed: 1 ft at 4:14PM Oct 25, 2020Observed: 1.1 ft at 10:14PM Oct 25, 2020Observed: 1.1 ft at 4:14AM Oct 26, 2020Observed: 1 ft at 10:14AM Oct 26, 2020Observed: 1 ft at 10:14PM Oct 27, 2020Observed: 1 ft at 4:14AM Oct 28, 2020Observed: 1 ft at 10:14AM Oct 28, 2020Observed: 1.1 ft at 4:14AM Oct 29, 2020Observed: 2.2 ft at 11:03AM Oct 29, 2020Observed: 2.9 ft at 11:35AM Oct 29, 2020Observed: 3.2 ft at 11:48AM Oct 29, 2020Observed: 3.6 ft at 12:02PM Oct 29, 2020Observed: 5.6 ft at 12:17PM Oct 29, 2020Observed: 4 ft at 12:18PM Oct 29, 2020Observed: 4.3 ft at 12:35PM Oct 29, 2020Observed: 4.6 ft at 1:02PM Oct 29, 2020Observed: 4.9 ft at 1:17PM Oct 29, 2020Highest Observation: 6.7 ft at 3:26PM Oct 29, 2020Highest Observation: 6.7 ft at 4:14PM Oct 29, 2020Observed: 5.4 ft at 10:14PM Oct 29, 2020Observed: 4.4 ft at 12:38AM Oct 30, 2020Observed: 2 ft at 12:57AM Oct 30, 2020Observed: 3.8 ft at 3:05AM Oct 30, 2020Observed: 3.3 ft at 6:14AM Oct 30, 2020Observed: 3 ft at 8:44AM Oct 30, 2020Observed: 2.8 ft at 10:14AM Oct 30, 2020VA Department of Emergency ManagementIROV2(plotting HGIRR) Graph Created (10:34AM Oct 30, 2020)ObservedLatest observed value: 2.8 ft at 10:14 AM EDT 30-Oct-2020. Flood Stage is 9 ft
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Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
NOTE: Forecasts are not available for the North Fork Roanoke River at Ironto. Only observed stages are available for this point.
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Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 11
Flood Stage: 9
Action Stage: 7
Low Stage (in feet): 0

Historic Crests
(1) 17.50 ft on 04/22/1992
(2) 12.70 ft on 02/22/2003
(3) 11.10 ft on 10/11/2018
(4) 10.90 ft on 01/31/2013
(5) 10.70 ft on 06/27/2006
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(P): Preliminary values subject to further review.

Recent Crests
(1) 11.10 ft on 10/11/2018
(2) 7.50 ft on 01/23/2017
(3) 6.60 ft on 02/03/2016
(4) 6.70 ft on 11/19/2015
(5) 10.10 ft on 09/29/2015
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

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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: 37.236111° N, Longitude: 80.238611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 9 ft  
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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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: 1-Mar-2019 12:35 AM
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