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South Fork Forked Deer River at Jackson

Highest listed crest 45.15 ftFlood stage 34.0 ft41 crests since 1930

The South Fork Forked Deer River at Jackson crested at major flood stage 6 times among the 41 crests the National Weather Service lists from 1930 to 2025. The highest, 45.15 ft on January 9, 1946, was major flooding, 11.15 feet above flood stage.

The gauge

Highest listed crest
45.15 ft
January 9, 1946
Flood stage
34.0 ft
Major flooding from 39.0 ft
Crests at major
6
15th of 100 gauges in Tennessee
Most recent flood crest
April 5, 2025
36.43 ft, minor flooding
Location
Madison County
Near Jackson (2.9 mi)
Identifiers
NWS JKNT1
No USGS station

Flood stages

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

Flood categories, South Fork Forked Deer River at Jackson
Action stage32.09Jan 8, 2007The level at which the NWS or its partners begin to take action
Flood stage (minor)34.023Apr 5, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage37.52May 3, 2010Some inundation of structures and roads near the stream
Major flood stage39.06Jan 24, 1962Extensive inundation of structures and roads

Every listed crest

41 crests from 1930 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the South Fork Forked Deer River at Jackson, 1930 to 2025 3035404550ft Flood stage 34.0 ftMajor 39.0 ft Jan 10, 1930: 41.32 ft, major floodingJan 14, 1932: 42.12 ft, major floodingJan 9, 1946: 45.15 ft, major floodingFeb 14, 1948: 42.74 ft, major floodingFeb 1, 1950: 42.05 ft, major floodingJan 24, 1962: 42.22 ft, major floodingMay 29, 1978: 31.18 ft, below flood stage; 360 cubic feet per secondApr 11, 1979: 33.90 ft, action stage; 640 cubic feet per secondJun 29, 1980: 34.07 ft, minor flooding; 660 cubic feet per secondDec 28, 1982: 34.45 ft, minor floodingMay 5, 1984: 33.74 ft, action stageFeb 12, 1985: 32.63 ft, action stageNov 11, 1986: 33.16 ft, action stageDec 26, 1987: 36.66 ft, minor flooding; 25,472 cubic feet per secondNov 21, 1988: 34.45 ft, minor floodingJan 16, 1989: 34.40 ft, minor floodingFeb 5, 1990: 35.70 ft, minor floodingFeb 21, 1991: 34.90 ft, minor floodingMar 12, 1992: 33.60 ft, action stageApr 10, 1993: 33.35 ft, action stageMar 3, 1997: 35.73 ft, minor floodingMar 10, 1998: 34.00 ft, minor floodingJan 24, 1999: 34.99 ft, minor floodingApr 4, 2000: 33.22 ft, action stageFeb 18, 2001: 34.52 ft, minor flooding; 11,902 cubic feet per secondDec 1, 2001: 37.64 ft, moderate flooding; 32,808 cubic feet per secondSep 29, 2002: 35.40 ft, minor floodingFeb 17, 2003: 35.37 ft, minor flooding; 16,923 cubic feet per secondFeb 7, 2004: 34.20 ft, minor flooding; 10,110 cubic feet per secondJan 25, 2006: 33.82 ft, action stageJan 8, 2007: 32.73 ft, action stageMar 6, 2008: 34.58 ft, minor floodingMay 3, 2010: 38.76 ft, moderate flooding; 42,245 cubic feet per secondApr 29, 2011: 36.65 ft, minor floodingFeb 6, 2014: 34.40 ft, minor floodingJul 23, 2017: 34.19 ft, minor floodingFeb 25, 2019: 34.90 ft, minor floodingMar 9, 2021: 35.78 ft, minor floodingFeb 17, 2025: 34.33 ft, minor flooding; 10,634 cubic feet per secondMar 17, 2025: 34.51 ft, minor flooding; 11,558 cubic feet per secondApr 5, 2025: 36.43 ft, minor flooding; 23,922 cubic feet per second Highest, 45.15 ft, Jan 9, 1946 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, South Fork Forked Deer River at Jackson 1930s: 2 1940s: 2 1950s: 1 1960s: 1 1970s: 0 1980s: 5 1990s: 5 2000s: 6 6 2010s: 5 2020s: 4 1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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.
  3. 1 crest measured on an earlier gauge datum is left out: 46.32 ft on Jan 21, 1935.

Highest crests

Highest listed crests, South Fork Forked Deer River at Jackson
1Jan 9, 194645.15+11.15Major—
2Feb 14, 194842.74+8.74Major—
3Jan 24, 196242.22+8.22Major—
4Jan 14, 193242.12+8.12Major—
5Feb 1, 195042.05+8.05Major—
6Jan 10, 193041.32+7.32Major—
7May 3, 201038.76+4.76Moderate42,245
8Dec 1, 200137.64+3.64Moderate32,808
9Dec 26, 198736.66+2.66Minor25,472
10Apr 29, 201136.65+2.65Minor—
11Apr 5, 202536.43+2.43Minor23,922
12Mar 9, 202135.78+1.78Minor—
13Mar 3, 199735.73+1.73Minor—
14Feb 5, 199035.70+1.70Minor—
15Sep 29, 200235.40+1.40Minor—
16Feb 17, 200335.37+1.37Minor16,923
17Jan 24, 199934.99+0.99Minor—
18Feb 21, 199134.90+0.90Minor—
19Feb 25, 201934.90+0.90Minor—
20Mar 6, 200834.58+0.58Minor—
21Feb 18, 200134.52+0.52Minor11,902
22Mar 17, 202534.51+0.51Minor11,558
23Dec 28, 198234.45+0.45Minor—
24Nov 21, 198834.45+0.45Minor—
25Jan 16, 198934.40+0.40Minor—
26Feb 6, 201434.40+0.40Minor—
27Feb 17, 202534.33+0.33Minor10,634
28Feb 7, 200434.20+0.20Minor10,110
29Jul 23, 201734.19+0.19Minor—
30Jun 29, 198034.07+0.07Minor660
31Mar 10, 199834.000.00Minor—
32Apr 11, 197933.90−0.10Action640
33Jan 25, 200633.82−0.18Action—
34May 5, 198433.74−0.26Action—
35Mar 12, 199233.60−0.40Action—
36Apr 10, 199333.35−0.65Action—
37Apr 4, 200033.22−0.78Action—
38Nov 11, 198633.16−0.84Action—
39Jan 8, 200732.73−1.27Action—
40Feb 12, 198532.63−1.37Action—
41May 29, 197831.18−2.82Below flood stage360

Gauges on the South Fork Forked Deer River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the South Fork Forked Deer River
Jackson this gaugeTN34.045.15 ft, Jan 9, 19466
HallsTN9.016.14 ft, May 4, 20101

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

NOAA National Water Prediction Service, gauge JKNT1, 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.