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Hydrograph River at a Glance Download
James River (VA) at Holcomb Rock Stage (ft)Flow (kcfs)Observed: 4.36 ft at 10:00PM Aug 19, 2019Observed: 4.37 ft at 10:15PM Aug 19, 2019Observed: 4.37 ft at 10:30PM Aug 19, 2019Observed: 4.37 ft at 10:45PM Aug 19, 2019Observed: 4.37 ft at 11:00PM Aug 19, 2019Observed: 4.37 ft at 11:15PM Aug 19, 2019Observed: 4.37 ft at 11:30PM Aug 19, 2019Observed: 4.37 ft at 11:45PM Aug 19, 2019Observed: 4.37 ft at 12:00AM Aug 20, 2019Observed: 4.37 ft at 12:15AM Aug 20, 2019Observed: 4.37 ft at 12:30AM Aug 20, 2019Observed: 4.38 ft at 12:45AM Aug 20, 2019Observed: 4.38 ft at 1:00AM Aug 20, 2019Observed: 4.38 ft at 1:15AM Aug 20, 2019Observed: 4.37 ft at 1:30AM Aug 20, 2019Observed: 4.38 ft at 1:45AM Aug 20, 2019Observed: 4.38 ft at 2:00AM Aug 20, 2019Observed: 4.38 ft at 2:15AM Aug 20, 2019Observed: 4.38 ft at 2:30AM Aug 20, 2019Observed: 4.38 ft at 2:45AM Aug 20, 2019Observed: 4.38 ft at 3:00AM Aug 20, 2019Observed: 4.38 ft at 3:15AM Aug 20, 2019Observed: 4.38 ft at 3:30AM Aug 20, 2019Observed: 4.38 ft at 3:45AM Aug 20, 2019Observed: 4.39 ft at 4:00AM Aug 20, 2019Observed: 4.39 ft at 4:15AM Aug 20, 2019Observed: 4.39 ft at 4:30AM Aug 20, 2019Observed: 4.38 ft at 4:45AM Aug 20, 2019Observed: 4.39 ft at 5:00AM Aug 20, 2019Observed: 4.38 ft at 5:15AM Aug 20, 2019Observed: 4.38 ft at 5:30AM Aug 20, 2019Observed: 4.39 ft at 5:45AM Aug 20, 2019Observed: 4.38 ft at 6:00AM Aug 20, 2019Observed: 4.38 ft at 6:15AM Aug 20, 2019Observed: 4.39 ft at 6:30AM Aug 20, 2019Observed: 4.38 ft at 6:45AM Aug 20, 2019Observed: 4.39 ft at 7:00AM Aug 20, 2019Observed: 4.39 ft at 7:15AM Aug 20, 2019Observed: 4.39 ft at 7:30AM Aug 20, 2019Observed: 4.42 ft at 10:00AM Aug 20, 2019Observed: 4.42 ft at 10:15AM Aug 20, 2019Observed: 4.41 ft at 10:30AM Aug 20, 2019Observed: 4.41 ft at 10:45AM Aug 20, 2019Observed: 4.41 ft at 11:00AM Aug 20, 2019Observed: 4.41 ft at 11:15AM Aug 20, 2019Observed: 4.4 ft at 11:30AM Aug 20, 2019Observed: 4.4 ft at 11:45AM Aug 20, 2019Observed: 4.41 ft at 12:00PM Aug 20, 2019Observed: 4.4 ft at 12:15PM Aug 20, 2019Observed: 4.4 ft at 12:30PM Aug 20, 2019Observed: 4.4 ft at 12:45PM Aug 20, 2019Observed: 4.4 ft at 1:00PM Aug 20, 2019Observed: 4.4 ft at 1:15PM Aug 20, 2019Observed: 4.4 ft at 1:30PM Aug 20, 2019Observed: 4.39 ft at 1:45PM Aug 20, 2019Observed: 4.4 ft at 2:00PM Aug 20, 2019Observed: 4.39 ft at 2:15PM Aug 20, 2019Observed: 4.4 ft at 2:30PM Aug 20, 2019Observed: 4.39 ft at 2:45PM Aug 20, 2019Observed: 4.4 ft at 3:00PM Aug 20, 2019Observed: 4.4 ft at 3:15PM Aug 20, 2019Observed: 4.39 ft at 3:30PM Aug 20, 2019Observed: 4.37 ft at 4:15PM Aug 20, 2019Observed: 4.36 ft at 4:30PM Aug 20, 2019Observed: 4.34 ft at 4:45PM Aug 20, 2019Observed: 4.33 ft at 5:15PM Aug 20, 2019Observed: 4.34 ft at 5:30PM Aug 20, 2019Observed: 4.35 ft at 5:45PM Aug 20, 2019Observed: 4.37 ft at 6:00PM Aug 20, 2019Observed: 4.39 ft at 6:15PM Aug 20, 2019Observed: 4.4 ft at 6:30PM Aug 20, 2019Observed: 4.41 ft at 6:45PM Aug 20, 2019Observed: 4.41 ft at 7:00PM Aug 20, 2019Observed: 4.41 ft at 7:15PM Aug 20, 2019Observed: 4.42 ft at 7:30PM Aug 20, 2019Observed: 4.42 ft at 7:45PM Aug 20, 2019Observed: 4.42 ft at 8:00PM Aug 20, 2019Observed: 4.42 ft at 8:15PM Aug 20, 2019Observed: 4.42 ft at 8:30PM Aug 20, 2019Observed: 4.42 ft at 8:45PM Aug 20, 2019Observed: 4.42 ft at 9:00PM Aug 20, 2019Observed: 4.42 ft at 9:15PM Aug 20, 2019Observed: 4.42 ft at 9:30PM Aug 20, 2019Observed: 4.41 ft at 9:45PM Aug 20, 2019Observed: 4.41 ft at 10:00PM Aug 20, 2019Observed: 4.41 ft at 10:15PM Aug 20, 2019Observed: 4.41 ft at 10:30PM Aug 20, 2019Observed: 4.41 ft at 10:45PM Aug 20, 2019Observed: 4.41 ft at 11:00PM Aug 20, 2019Observed: 4.41 ft at 11:15PM Aug 20, 2019Observed: 4.41 ft at 11:30PM Aug 20, 2019Observed: 4.41 ft at 11:45PM Aug 20, 2019Observed: 4.42 ft at 12:00AM Aug 21, 2019Observed: 4.41 ft at 12:15AM Aug 21, 2019Observed: 4.4 ft at 12:30AM Aug 21, 2019Observed: 4.4 ft at 12:45AM Aug 21, 2019Observed: 4.41 ft at 1:00AM Aug 21, 2019Observed: 4.4 ft at 1:15AM Aug 21, 2019Observed: 4.41 ft at 1:30AM Aug 21, 2019Observed: 4.4 ft at 1:45AM Aug 21, 2019Observed: 4.41 ft at 2:00AM Aug 21, 2019Observed: 4.41 ft at 2:15AM Aug 21, 2019Observed: 4.41 ft at 2:30AM Aug 21, 2019Observed: 4.41 ft at 2:45AM Aug 21, 2019Observed: 4.4 ft at 3:00AM Aug 21, 2019Observed: 4.4 ft at 3:15AM Aug 21, 2019Observed: 4.41 ft at 3:30AM Aug 21, 2019Observed: 4.41 ft at 3:45AM Aug 21, 2019Observed: 4.41 ft at 4:00AM Aug 21, 2019Observed: 4.4 ft at 4:15AM Aug 21, 2019Observed: 4.4 ft at 4:30AM Aug 21, 2019Observed: 4.41 ft at 4:45AM Aug 21, 2019Observed: 4.41 ft at 5:00AM Aug 21, 2019Observed: 4.41 ft at 5:15AM Aug 21, 2019Observed: 4.4 ft at 5:30AM Aug 21, 2019Observed: 4.4 ft at 5:45AM Aug 21, 2019Observed: 4.4 ft at 6:00AM Aug 21, 2019Observed: 4.4 ft at 6:15AM Aug 21, 2019Observed: 4.4 ft at 6:30AM Aug 21, 2019Observed: 4.4 ft at 6:45AM Aug 21, 2019Observed: 4.4 ft at 7:00AM Aug 21, 2019Observed: 4.4 ft at 7:15AM Aug 21, 2019Observed: 4.4 ft at 7:30AM Aug 21, 2019Observed: 4.4 ft at 7:45AM Aug 21, 2019Observed: 4.4 ft at 8:00AM Aug 21, 2019Observed: 4.4 ft at 8:15AM Aug 21, 2019Observed: 4.4 ft at 8:30AM Aug 21, 2019Observed: 4.4 ft at 8:45AM Aug 21, 2019Observed: 4.4 ft at 9:00AM Aug 21, 2019Observed: 4.39 ft at 9:15AM Aug 21, 2019Observed: 4.39 ft at 9:30AM Aug 21, 2019Observed: 4.39 ft at 9:45AM Aug 21, 2019Observed: 4.4 ft at 10:00AM Aug 21, 2019Observed: 4.39 ft at 10:15AM Aug 21, 2019Observed: 4.39 ft at 10:30AM Aug 21, 2019Observed: 4.39 ft at 10:45AM Aug 21, 2019Observed: 4.39 ft at 11:00AM Aug 21, 2019Observed: 4.39 ft at 11:15AM Aug 21, 2019Observed: 4.39 ft at 11:30AM Aug 21, 2019Observed: 4.39 ft at 11:45AM Aug 21, 2019Observed: 4.39 ft at 12:00PM Aug 21, 2019Observed: 4.39 ft at 12:15PM Aug 21, 2019Observed: 4.39 ft at 12:30PM Aug 21, 2019Observed: 4.39 ft at 12:45PM Aug 21, 2019Observed: 4.39 ft at 1:00PM Aug 21, 2019Observed: 4.4 ft at 1:15PM Aug 21, 2019Observed: 4.39 ft at 1:30PM Aug 21, 2019Observed: 4.39 ft at 1:45PM Aug 21, 2019Observed: 4.39 ft at 2:00PM Aug 21, 2019Observed: 4.39 ft at 2:15PM Aug 21, 2019Observed: 4.39 ft at 2:30PM Aug 21, 2019Observed: 4.39 ft at 2:45PM Aug 21, 2019Observed: 4.39 ft at 3:00PM Aug 21, 2019Observed: 4.39 ft at 3:15PM Aug 21, 2019Observed: 4.39 ft at 3:30PM Aug 21, 2019Observed: 4.39 ft at 3:45PM Aug 21, 2019Observed: 4.39 ft at 4:00PM Aug 21, 2019Observed: 4.39 ft at 4:15PM Aug 21, 2019Observed: 4.39 ft at 4:30PM Aug 21, 2019Observed: 4.39 ft at 4:45PM Aug 21, 2019Observed: 4.39 ft at 5:00PM Aug 21, 2019Observed: 4.39 ft at 5:15PM Aug 21, 2019Observed: 4.39 ft at 5:30PM Aug 21, 2019Observed: 4.39 ft at 5:45PM Aug 21, 2019Observed: 4.39 ft at 6:00PM Aug 21, 2019Observed: 4.38 ft at 6:15PM Aug 21, 2019Observed: 4.39 ft at 6:30PM Aug 21, 2019Observed: 4.38 ft at 6:45PM Aug 21, 2019Observed: 4.38 ft at 7:00PM Aug 21, 2019Observed: 4.38 ft at 7:15PM Aug 21, 2019Observed: 4.38 ft at 7:30PM Aug 21, 2019Observed: 4.38 ft at 7:45PM Aug 21, 2019Observed: 4.38 ft at 8:00PM Aug 21, 2019Observed: 4.38 ft at 8:15PM Aug 21, 2019Observed: 4.38 ft at 8:30PM Aug 21, 2019Observed: 4.38 ft at 8:45PM Aug 21, 2019Observed: 4.39 ft at 9:00PM Aug 21, 2019Observed: 4.39 ft at 9:15PM Aug 21, 2019Observed: 4.39 ft at 9:30PM Aug 21, 2019Observed: 4.39 ft at 9:45PM Aug 21, 2019Observed: 4.38 ft at 10:00PM Aug 21, 2019Observed: 4.39 ft at 10:15PM Aug 21, 2019Observed: 4.39 ft at 10:30PM Aug 21, 2019Observed: 4.39 ft at 10:45PM Aug 21, 2019Observed: 4.39 ft at 11:00PM Aug 21, 2019Observed: 4.38 ft at 11:15PM Aug 21, 2019Observed: 4.39 ft at 11:30PM Aug 21, 2019Observed: 4.39 ft at 11:45PM Aug 21, 2019Observed: 4.39 ft at 12:00AM Aug 22, 2019Observed: 4.39 ft at 12:15AM Aug 22, 2019Observed: 4.39 ft at 12:30AM Aug 22, 2019Observed: 4.39 ft at 12:45AM Aug 22, 2019Observed: 4.38 ft at 1:00AM Aug 22, 2019Observed: 4.38 ft at 1:15AM Aug 22, 2019Observed: 4.38 ft at 1:30AM Aug 22, 2019Observed: 4.39 ft at 1:45AM Aug 22, 2019Observed: 4.38 ft at 2:00AM Aug 22, 2019Observed: 4.38 ft at 2:15AM Aug 22, 2019Observed: 4.39 ft at 2:30AM Aug 22, 2019Observed: 4.38 ft at 2:45AM Aug 22, 2019Observed: 4.38 ft at 3:00AM Aug 22, 2019Observed: 4.39 ft at 3:15AM Aug 22, 2019Observed: 4.38 ft at 3:30AM Aug 22, 2019Observed: 4.38 ft at 3:45AM Aug 22, 2019Observed: 4.38 ft at 4:00AM Aug 22, 2019Observed: 4.38 ft at 4:15AM Aug 22, 2019Observed: 4.38 ft at 4:30AM Aug 22, 2019Observed: 4.38 ft at 4:45AM Aug 22, 2019Observed: 4.37 ft at 5:00AM Aug 22, 2019Observed: 4.37 ft at 5:15AM Aug 22, 2019Observed: 4.38 ft at 5:30AM Aug 22, 2019Observed: 4.37 ft at 5:45AM Aug 22, 2019Observed: 4.37 ft at 6:00AM Aug 22, 2019Observed: 4.37 ft at 6:15AM Aug 22, 2019Observed: 4.37 ft at 6:30AM Aug 22, 2019Observed: 4.37 ft at 6:45AM Aug 22, 2019Observed: 4.37 ft at 7:00AM Aug 22, 2019Observed: 4.37 ft at 7:15AM Aug 22, 2019Observed: 4.37 ft at 7:30AM Aug 22, 2019Observed: 4.37 ft at 7:45AM Aug 22, 2019Observed: 4.37 ft at 8:00AM Aug 22, 2019Observed: 4.37 ft at 8:15AM Aug 22, 2019Observed: 4.37 ft at 8:30AM Aug 22, 2019Observed: 4.37 ft at 8:45AM Aug 22, 2019Observed: 4.37 ft at 9:00AM Aug 22, 2019Observed: 4.38 ft at 9:15AM Aug 22, 2019Observed: 4.37 ft at 9:30AM Aug 22, 2019Observed: 4.36 ft at 9:45AM Aug 22, 2019Observed: 4.37 ft at 10:00AM Aug 22, 2019Observed: 4.37 ft at 10:15AM Aug 22, 2019Observed: 4.37 ft at 10:30AM Aug 22, 2019Observed: 4.36 ft at 10:45AM Aug 22, 2019Observed: 4.37 ft at 11:00AM Aug 22, 2019Observed: 4.37 ft at 11:15AM Aug 22, 2019Observed: 4.37 ft at 11:30AM Aug 22, 2019Observed: 4.37 ft at 11:45AM Aug 22, 2019Observed: 4.36 ft at 12:00PM Aug 22, 2019Observed: 4.36 ft at 12:15PM Aug 22, 2019Observed: 4.37 ft at 12:30PM Aug 22, 2019Observed: 4.37 ft at 12:45PM Aug 22, 2019Observed: 4.37 ft at 1:00PM Aug 22, 2019Observed: 4.37 ft at 1:15PM Aug 22, 2019Observed: 4.37 ft at 1:30PM Aug 22, 2019Observed: 4.37 ft at 1:45PM Aug 22, 2019Observed: 4.36 ft at 2:00PM Aug 22, 2019Observed: 4.36 ft at 2:15PM Aug 22, 2019Observed: 4.37 ft at 2:30PM Aug 22, 2019Observed: 4.37 ft at 2:45PM Aug 22, 2019Observed: 4.37 ft at 3:00PM Aug 22, 2019Observed: 4.38 ft at 3:15PM Aug 22, 2019Observed: 4.38 ft at 3:30PM Aug 22, 2019Observed: 4.38 ft at 3:45PM Aug 22, 2019Observed: 4.38 ft at 4:00PM Aug 22, 2019Observed: 4.37 ft at 4:15PM Aug 22, 2019Observed: 4.38 ft at 4:30PM Aug 22, 2019Observed: 4.38 ft at 4:45PM Aug 22, 2019Observed: 4.38 ft at 5:00PM Aug 22, 2019Observed: 4.38 ft at 5:15PM Aug 22, 2019Observed: 4.39 ft at 5:30PM Aug 22, 2019Observed: 4.39 ft at 5:45PM Aug 22, 2019Observed: 4.39 ft at 6:00PM Aug 22, 2019Observed: 4.39 ft at 6:15PM Aug 22, 2019Observed: 4.41 ft at 6:30PM Aug 22, 2019Observed: 4.4 ft at 6:45PM Aug 22, 2019Observed: 4.41 ft at 7:00PM Aug 22, 2019Observed: 4.41 ft at 7:15PM Aug 22, 2019Observed: 4.42 ft at 7:30PM Aug 22, 2019Observed: 4.41 ft at 7:45PM Aug 22, 2019Observed: 4.42 ft at 8:00PM Aug 22, 2019Observed: 4.42 ft at 8:15PM Aug 22, 2019Observed: 4.42 ft at 8:30PM Aug 22, 2019Highest Observation: 4.43 ft at 8:45PM Aug 22, 2019Forecast: 4.4 ft 2:00AM Aug 23, 2019Forecast: 4.4 ft 8:00AM Aug 23, 2019Forecast: 4.4 ft 2:00PM Aug 23, 2019Forecast: 4.4 ft 8:00PM Aug 23, 2019Forecast: 4.5 ft 2:00AM Aug 24, 2019Forecast: 4.5 ft 8:00AM Aug 24, 2019Forecast: 4.5 ft 2:00PM Aug 24, 2019Highest Forecast: 4.6 ft 8:00PM Aug 24, 2019Highest Forecast: 4.6 ft 2:00AM Aug 25, 2019Highest Forecast: 4.6 ft 8:00AM Aug 25, 2019USGS--Water Resources of the United StatesHRKV2(plotting HGIRG) Graph Created (9:49PM Aug 22, 2019)ObservedForecast (issued 9:48AM Aug 22)Latest observed value: 4.43 ft at 8:45 PM EDT 22-Aug-2019. Flood Stage is 22 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 72 hours into the future from the forecast issuance time.

NOTE: Forecasts for the James River (VA) at Holcomb Rock are issued routinely year-round.

Vertical Datum updated from NGVD29 to NAVD88 by gauge owner.

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Upstream Gauge - at Buchanan Upstream Gauge Downstream Gauge Downstream Gauge - at Bent Creek
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 24
Flood Stage: 22
Action Stage: 18
Low Stage (in feet): 0

Historic Crests
(1) 42.15 ft on 11/05/1985
(2) 35.50 ft on 08/20/1969
(3) 32.38 ft on 06/22/1972
(4) 31.30 ft on 03/28/1913
(5) 30.99 ft on 01/20/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 20.26 ft on 02/24/2019
(2) 20.84 ft on 04/17/2018 (P)
(3) 18.17 ft on 05/05/2017 (P)
(4) 19.36 ft on 06/24/2016
(5) 18.21 ft on 03/06/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.91 ft on 10/05/1970
(2) 3.02 ft on 09/21/1941
(3) 3.06 ft on 10/13/1941
(4) 3.11 ft on 09/26/1963
(5) 3.12 ft on 09/02/1968
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
KML Image
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
32 Water floods railroad tracks along right bank.
28 Water reaches mail floor of powerhouse.
23 Power equipment yard and access flooded at holcomb rock dam.
22 Two feet of water in powerhouse lower floor.
About This Location Collapse

Latitude: 37.501111° N, Longitude: 79.262778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 22 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 547.83 569.83 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 548.53 ft 570.53 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics. 

Click individual graphics to enlarge.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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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