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Red River near Port Royal

Highest listed crest 49.48 ftFlood stage 30.0 ft51 crests since 1937

The Red River near Port Royal crested at major flood stage 8 times among the 51 crests the National Weather Service lists from 1937 to 2019. The highest, 49.48 ft on May 3, 2010, was major flooding, 19.48 feet above flood stage.

The gauge

Highest listed crest
49.48 ft
May 3, 2010; 63,200 cubic feet per second
Flood stage
30.0 ft
Major flooding from 40.0 ft
Crests at major
8
11th of 100 gauges in Tennessee
Most recent flood crest
February 24, 2019
37.52 ft, minor flooding
Location
Montgomery County
Near Clarksville (11.3 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Red River near Port Royal
Action stage25.011Aug 31, 2005The level at which the NWS or its partners begin to take action
Flood stage (minor)30.021Feb 24, 2019Minimal or no property damage, but possibly some public threat
Moderate flood stage38.03Jun 11, 1998Some inundation of structures and roads near the stream
Major flood stage40.08May 3, 2010Extensive inundation of structures and roads

Every listed crest

51 crests from 1937 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Red River near Port Royal, 1937 to 2019 1020304050ft Flood stage 30.0 ftMajor 40.0 ft Jan 23, 1937: 44.40 ft, major floodingFeb 27, 1962: 43.18 ft, major flooding; 43,500 cubic feet per secondMar 6, 1963: 25.70 ft, action stage; 12,800 cubic feet per secondMar 10, 1964: 34.22 ft, minor flooding; 22,200 cubic feet per secondFeb 12, 1965: 31.03 ft, minor flooding; 17,600 cubic feet per secondFeb 14, 1966: 20.00 ft, below flood stage; 8,750 cubic feet per secondMay 15, 1967: 33.11 ft, minor flooding; 20,400 cubic feet per secondApr 5, 1968: 39.50 ft, moderate flooding; 33,300 cubic feet per secondJun 24, 1969: 31.52 ft, minor flooding; 18,300 cubic feet per secondApr 2, 1970: 31.85 ft, minor flooding; 18,700 cubic feet per secondFeb 23, 1971: 25.46 ft, action stage; 12,600 cubic feet per secondJan 28, 1972: 23.98 ft, below flood stage; 11,500 cubic feet per secondDec 9, 1972: 34.42 ft, minor flooding; 22,500 cubic feet per secondJan 11, 1974: 39.36 ft, moderate flooding; 33,000 cubic feet per secondMar 13, 1975: 48.26 ft, major flooding; 60,300 cubic feet per secondMar 30, 1976: 32.41 ft, minor flooding; 21,100 cubic feet per secondMar 4, 1977: 32.80 ft, minor flooding; 21,800 cubic feet per secondDec 5, 1977: 31.71 ft, minor flooding; 20,100 cubic feet per secondDec 9, 1978: 42.14 ft, major flooding; 41,400 cubic feet per secondDec 14, 1979: 28.44 ft, action stage; 15,600 cubic feet per secondJun 7, 1981: 36.69 ft, minor flooding; 28,500 cubic feet per secondJan 24, 1982: 27.99 ft, action stage; 15,100 cubic feet per secondMay 20, 1983: 42.36 ft, major flooding; 42,000 cubic feet per secondMay 8, 1984: 40.54 ft, major flooding; 37,100 cubic feet per secondNov 19, 1984: 25.81 ft, action stage; 12,900 cubic feet per secondFeb 18, 1986: 24.95 ft, below flood stage; 12,200 cubic feet per secondMar 1, 1987: 29.51 ft, action stage; 17,000 cubic feet per secondJan 20, 1988: 27.01 ft, action stage; 14,000 cubic feet per secondFeb 15, 1989: 37.24 ft, minor flooding; 29,500 cubic feet per secondFeb 4, 1990: 37.91 ft, minor flooding; 31,400 cubic feet per secondDec 22, 1990: 35.45 ft, minor flooding; 26,500 cubic feet per secondDec 3, 1991: 30.45 ft, minor flooding; 18,300 cubic feet per secondMay 4, 1993: 25.00 ft, action stage; 12,200 cubic feet per secondMar 10, 1994: 34.13 ft, minor flooding; 24,000 cubic feet per secondMay 19, 1995: 32.62 ft, minor flooding; 21,500 cubic feet per secondMar 8, 1996: 23.63 ft, below flood stage; 11,000 cubic feet per secondMar 3, 1997: 41.46 ft, major flooding; 39,500 cubic feet per secondJun 11, 1998: 38.05 ft, moderate flooding; 31,700 cubic feet per secondJan 23, 1999: 37.88 ft, minor flooding; 31,400 cubic feet per secondApr 25, 2000: 14.03 ft, below flood stage; 5,240 cubic feet per secondFeb 17, 2001: 20.71 ft, below flood stage; 10,300 cubic feet per secondNov 30, 2001: 28.74 ft, action stage; 17,400 cubic feet per secondFeb 16, 2003: 33.71 ft, minor flooding; 23,300 cubic feet per secondApr 23, 2004: 26.61 ft, action stage; 15,300 cubic feet per secondAug 31, 2005: 28.96 ft, action stage; 17,600 cubic feet per secondJan 23, 2006: 22.48 ft, below flood stage; 11,700 cubic feet per secondMay 6, 2007: 22.16 ft, below flood stage; 11,400 cubic feet per secondApr 4, 2008: 35.20 ft, minor flooding; 26,000 cubic feet per secondJan 28, 2009: 34.59 ft, minor flooding; 24,900 cubic feet per secondMay 3, 2010: 49.48 ft, major flooding; 63,200 cubic feet per secondFeb 24, 2019: 37.52 ft, minor flooding; 30,628 cubic feet per second Highest, 49.48 ft, May 3, 2010 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Red River near Port Royal 1930s: 1 1940s: 0 1950s: 0 1960s: 6 1970s: 8 8 1980s: 4 1990s: 8 2000s: 3 2010s: 2 1930s1940s1950s1960s1970s1980s1990s2000s2010s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

The 50 highest of 51 listed crests.

Highest listed crests, Red River near Port Royal
1May 3, 201049.48+19.48Major63,200
2Mar 13, 197548.26+18.26Major60,300
3Jan 23, 193744.40+14.40Major—
4Feb 27, 196243.18+13.18Major43,500
5May 20, 198342.36+12.36Major42,000
6Dec 9, 197842.14+12.14Major41,400
7Mar 3, 199741.46+11.46Major39,500
8May 8, 198440.54+10.54Major37,100
9Apr 5, 196839.50+9.50Moderate33,300
10Jan 11, 197439.36+9.36Moderate33,000
11Jun 11, 199838.05+8.05Moderate31,700
12Feb 4, 199037.91+7.91Minor31,400
13Jan 23, 199937.88+7.88Minor31,400
14Feb 24, 201937.52+7.52Minor30,628
15Feb 15, 198937.24+7.24Minor29,500
16Jun 7, 198136.69+6.69Minor28,500
17Dec 22, 199035.45+5.45Minor26,500
18Apr 4, 200835.20+5.20Minor26,000
19Jan 28, 200934.59+4.59Minor24,900
20Dec 9, 197234.42+4.42Minor22,500
21Mar 10, 196434.22+4.22Minor22,200
22Mar 10, 199434.13+4.13Minor24,000
23Feb 16, 200333.71+3.71Minor23,300
24May 15, 196733.11+3.11Minor20,400
25Mar 4, 197732.80+2.80Minor21,800
26May 19, 199532.62+2.62Minor21,500
27Mar 30, 197632.41+2.41Minor21,100
28Apr 2, 197031.85+1.85Minor18,700
29Dec 5, 197731.71+1.71Minor20,100
30Jun 24, 196931.52+1.52Minor18,300
31Feb 12, 196531.03+1.03Minor17,600
32Dec 3, 199130.45+0.45Minor18,300
33Mar 1, 198729.51−0.49Action17,000
34Aug 31, 200528.96−1.04Action17,600
35Nov 30, 200128.74−1.26Action17,400
36Dec 14, 197928.44−1.56Action15,600
37Jan 24, 198227.99−2.01Action15,100
38Jan 20, 198827.01−2.99Action14,000
39Apr 23, 200426.61−3.39Action15,300
40Nov 19, 198425.81−4.19Action12,900
41Mar 6, 196325.70−4.30Action12,800
42Feb 23, 197125.46−4.54Action12,600
43May 4, 199325.00−5.00Action12,200
44Feb 18, 198624.95−5.05Below flood stage12,200
45Jan 28, 197223.98−6.02Below flood stage11,500
46Mar 8, 199623.63−6.37Below flood stage11,000
47Jan 23, 200622.48−7.52Below flood stage11,700
48May 6, 200722.16−7.84Below flood stage11,400
49Feb 17, 200120.71−9.29Below flood stage10,300
50Feb 14, 196620.00−10.00Below flood stage8,750

Other gauges in Montgomery County

Flood gauges in Montgomery County
Clarksville46.062.58 ft, May 4, 20105

Montgomery County: every hazard · River floods across the country · Tennessee

NOAA National Water Prediction Service, gauge PORT1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.