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Hydrograph River at a Glance Download
Red River near Port Royal Stage (ft)Flow (kcfs)Highest Observation: 6.38 ft at 4:30AM Mar 20, 2023Observed: 6.37 ft at 5:00AM Mar 20, 2023Observed: 6.37 ft at 5:30AM Mar 20, 2023Observed: 6.37 ft at 6:00AM Mar 20, 2023Observed: 6.36 ft at 6:30AM Mar 20, 2023Observed: 6.36 ft at 7:00AM Mar 20, 2023Observed: 6.36 ft at 7:30AM Mar 20, 2023Observed: 6.36 ft at 8:00AM Mar 20, 2023Observed: 6.35 ft at 8:30AM Mar 20, 2023Observed: 6.35 ft at 9:00AM Mar 20, 2023Observed: 6.35 ft at 9:30AM Mar 20, 2023Observed: 6.35 ft at 10:00AM Mar 20, 2023Observed: 6.35 ft at 10:30AM Mar 20, 2023Observed: 6.35 ft at 11:00AM Mar 20, 2023Observed: 6.35 ft at 11:30AM Mar 20, 2023Observed: 6.34 ft at 12:00PM Mar 20, 2023Observed: 6.34 ft at 12:30PM Mar 20, 2023Observed: 6.34 ft at 1:00PM Mar 20, 2023Observed: 6.34 ft at 1:30PM Mar 20, 2023Observed: 6.34 ft at 2:00PM Mar 20, 2023Observed: 6.33 ft at 2:30PM Mar 20, 2023Observed: 6.33 ft at 3:00PM Mar 20, 2023Observed: 6.32 ft at 3:30PM Mar 20, 2023Observed: 6.32 ft at 4:00PM Mar 20, 2023Observed: 6.31 ft at 4:30PM Mar 20, 2023Observed: 6.3 ft at 5:00PM Mar 20, 2023Observed: 6.3 ft at 5:30PM Mar 20, 2023Observed: 6.29 ft at 6:00PM Mar 20, 2023Observed: 6.28 ft at 6:30PM Mar 20, 2023Observed: 6.28 ft at 7:00PM Mar 20, 2023Observed: 6.27 ft at 7:30PM Mar 20, 2023Observed: 6.27 ft at 8:00PM Mar 20, 2023Observed: 6.26 ft at 8:30PM Mar 20, 2023Observed: 6.26 ft at 9:00PM Mar 20, 2023Observed: 6.25 ft at 9:30PM Mar 20, 2023Observed: 6.25 ft at 10:00PM Mar 20, 2023Observed: 6.25 ft at 10:30PM Mar 20, 2023Observed: 6.24 ft at 11:00PM Mar 20, 2023Observed: 6.24 ft at 11:30PM Mar 20, 2023Observed: 6.24 ft at 12:00AM Mar 21, 2023Observed: 6.23 ft at 12:30AM Mar 21, 2023Observed: 6.23 ft at 1:00AM Mar 21, 2023Observed: 6.23 ft at 1:30AM Mar 21, 2023Observed: 6.23 ft at 2:00AM Mar 21, 2023Observed: 6.22 ft at 2:30AM Mar 21, 2023Observed: 6.22 ft at 3:00AM Mar 21, 2023Observed: 6.22 ft at 3:30AM Mar 21, 2023Observed: 6.22 ft at 4:00AM Mar 21, 2023Observed: 6.22 ft at 4:30AM Mar 21, 2023Observed: 6.21 ft at 5:00AM Mar 21, 2023Observed: 6.21 ft at 5:30AM Mar 21, 2023Observed: 6.21 ft at 6:00AM Mar 21, 2023Observed: 6.21 ft at 6:30AM Mar 21, 2023Observed: 6.21 ft at 7:00AM Mar 21, 2023Observed: 6.21 ft at 7:30AM Mar 21, 2023Observed: 6.21 ft at 8:00AM Mar 21, 2023Observed: 6.21 ft at 8:30AM Mar 21, 2023Observed: 6.21 ft at 9:00AM Mar 21, 2023Observed: 6.21 ft at 9:30AM Mar 21, 2023Observed: 6.2 ft at 10:00AM Mar 21, 2023Observed: 6.2 ft at 10:30AM Mar 21, 2023Observed: 6.21 ft at 11:00AM Mar 21, 2023Observed: 6.2 ft at 11:30AM Mar 21, 2023Observed: 6.2 ft at 12:00PM Mar 21, 2023Observed: 6.19 ft at 12:30PM Mar 21, 2023Observed: 6.19 ft at 1:00PM Mar 21, 2023Observed: 6.19 ft at 1:30PM Mar 21, 2023Observed: 6.19 ft at 2:00PM Mar 21, 2023Observed: 6.19 ft at 2:30PM Mar 21, 2023Observed: 6.18 ft at 3:00PM Mar 21, 2023Observed: 6.18 ft at 3:30PM Mar 21, 2023Observed: 6.18 ft at 4:00PM Mar 21, 2023Observed: 6.18 ft at 4:30PM Mar 21, 2023Observed: 6.17 ft at 5:00PM Mar 21, 2023Observed: 6.17 ft at 5:30PM Mar 21, 2023Observed: 6.17 ft at 6:00PM Mar 21, 2023Observed: 6.17 ft at 6:30PM Mar 21, 2023Observed: 6.17 ft at 7:00PM Mar 21, 2023Observed: 6.16 ft at 7:30PM Mar 21, 2023Observed: 6.18 ft at 8:00PM Mar 21, 2023Observed: 6.17 ft at 8:30PM Mar 21, 2023Observed: 6.16 ft at 9:00PM Mar 21, 2023Observed: 6.17 ft at 9:30PM Mar 21, 2023Observed: 6.17 ft at 10:00PM Mar 21, 2023Observed: 6.18 ft at 10:30PM Mar 21, 2023Observed: 6.17 ft at 11:00PM Mar 21, 2023Observed: 6.17 ft at 11:30PM Mar 21, 2023Observed: 6.17 ft at 12:00AM Mar 22, 2023Observed: 6.17 ft at 12:30AM Mar 22, 2023Observed: 6.17 ft at 1:00AM Mar 22, 2023Observed: 6.17 ft at 1:30AM Mar 22, 2023Observed: 6.17 ft at 2:00AM Mar 22, 2023Observed: 6.17 ft at 2:30AM Mar 22, 2023Observed: 6.17 ft at 3:00AM Mar 22, 2023Observed: 6.18 ft at 3:30AM Mar 22, 2023Observed: 6.17 ft at 4:00AM Mar 22, 2023Observed: 6.17 ft at 4:30AM Mar 22, 2023Observed: 6.17 ft at 5:00AM Mar 22, 2023Observed: 6.17 ft at 5:30AM Mar 22, 2023Observed: 6.18 ft at 6:00AM Mar 22, 2023Observed: 6.18 ft at 6:30AM Mar 22, 2023Observed: 6.18 ft at 7:00AM Mar 22, 2023Observed: 6.18 ft at 7:30AM Mar 22, 2023Observed: 6.19 ft at 8:00AM Mar 22, 2023Observed: 6.19 ft at 8:30AM Mar 22, 2023Observed: 6.19 ft at 9:00AM Mar 22, 2023Observed: 6.19 ft at 9:30AM Mar 22, 2023Observed: 6.2 ft at 10:00AM Mar 22, 2023Observed: 6.19 ft at 10:30AM Mar 22, 2023Observed: 6.2 ft at 11:00AM Mar 22, 2023Observed: 6.2 ft at 11:30AM Mar 22, 2023Observed: 6.2 ft at 12:00PM Mar 22, 2023Observed: 6.2 ft at 12:30PM Mar 22, 2023Observed: 6.2 ft at 1:00PM Mar 22, 2023Observed: 6.2 ft at 1:30PM Mar 22, 2023Observed: 6.2 ft at 2:00PM Mar 22, 2023Observed: 6.2 ft at 2:30PM Mar 22, 2023Observed: 6.19 ft at 3:00PM Mar 22, 2023Observed: 6.19 ft at 3:30PM Mar 22, 2023Observed: 6.19 ft at 4:00PM Mar 22, 2023Observed: 6.19 ft at 4:30PM Mar 22, 2023Observed: 6.19 ft at 5:00PM Mar 22, 2023Observed: 6.19 ft at 5:30PM Mar 22, 2023Observed: 6.19 ft at 6:00PM Mar 22, 2023Observed: 6.19 ft at 6:30PM Mar 22, 2023Observed: 6.18 ft at 7:00PM Mar 22, 2023Observed: 6.18 ft at 7:30PM Mar 22, 2023Observed: 6.18 ft at 8:00PM Mar 22, 2023Observed: 6.18 ft at 8:30PM Mar 22, 2023Observed: 6.18 ft at 9:00PM Mar 22, 2023Observed: 6.18 ft at 9:30PM Mar 22, 2023Observed: 6.18 ft at 10:00PM Mar 22, 2023Observed: 6.18 ft at 10:30PM Mar 22, 2023Observed: 6.18 ft at 11:00PM Mar 22, 2023Observed: 6.18 ft at 11:30PM Mar 22, 2023Observed: 6.18 ft at 12:00AM Mar 23, 2023Observed: 6.18 ft at 12:30AM Mar 23, 2023Observed: 6.18 ft at 1:00AM Mar 23, 2023Observed: 6.18 ft at 1:30AM Mar 23, 2023Observed: 6.18 ft at 2:00AM Mar 23, 2023Observed: 6.18 ft at 2:30AM Mar 23, 2023Observed: 6.18 ft at 3:00AM Mar 23, 2023Observed: 6.18 ft at 3:30AM Mar 23, 2023USGS--Water Resources of the United StatesPORT1(plotting HGIRG) Graph Created (4:16AM Mar 23, 2023)ObservedLatest observed value: 6.18 ft at 3:30 AM CDT 23-Mar-2023. Flood Stage is 30 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Red River near Port Royal are issued as needed during times of high water, but are not routinely available.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 40
Moderate Flood Stage: 38
Flood Stage: 30
Action Stage: 25
Low Stage (in feet): -9999

Historic Crests
(1) 49.48 ft on 05/03/2010
(2) 48.26 ft on 03/13/1975
(3) 44.40 ft on 01/23/1937
(4) 43.18 ft on 02/27/1962
(5) 42.36 ft on 05/20/1983
(6) 42.14 ft on 12/09/1978
(7) 41.46 ft on 03/03/1997
(8) 40.54 ft on 05/08/1984
(9) 39.50 ft on 04/05/1968
(10) 39.36 ft on 01/11/1974
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 37.52 ft on 02/24/2019
(2) 49.48 ft on 05/03/2010
(3) 34.59 ft on 01/28/2009
(4) 35.20 ft on 04/04/2008
(5) 22.16 ft on 05/06/2007
(6) 22.48 ft on 01/23/2006
(7) 28.96 ft on 08/31/2005
(8) 26.61 ft on 04/23/2004
(9) 33.71 ft on 02/16/2003
(10) 28.74 ft on 11/30/2001
Show More Recent Crests

(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:13
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
47 Water begins to flood Highway 238 just north of the bridge at Port Royal State Park.
38 Water begins to approach homes off of Clarksville-Springfield Rd.
35 Water begins to flood Port Royal Rd near the Highway 238 bridge.
33 Flooding of Port Royal State Park begins.
30 Low lying agricultural areas along the Red River from the Kentucky State Line to Adams, past Port Royal State Park, and on the Sulpher Fork from near Springfield to near Cedar Hill, to Port Royal State Park begin to flood.
17 The public access parking lot at Port Royal State Park is completely inundated.
11 Water begins to inundate the public access parking lot and picnic area at Port Royal State Park.
Photos
(1) Gauge House
(2) Port Royal, Red River Bridge
(3) Downstream View
(4) Upstream View of Red River
About This Location Collapse

Latitude: 36.553889° N, Longitude: 87.141944° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 30 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 376.25 ft 406.25 ft  

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
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

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
Nashville Weather Forecast Office
500 Weather Station Road
Old Hickory, TN 37138
(615) 754-4633
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