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Oostanaula River at Calhoun

Highest listed crest 34.15 ftFlood stage 21.0 ft44 crests since 1980

The Oostanaula River at Calhoun crested above flood stage 38 times among the 44 crests the National Weather Service lists from 1980 to 2025. The highest, 34.15 ft on February 19, 1990, was moderate flooding, 13.15 feet above flood stage. 2 other gauges on the Oostanaula River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
34.15 ft
February 19, 1990; 45,500 cubic feet per second
Flood stage
21.0 ft
Major flooding from 35.0 ft
Crests at major
0
38 above flood stage
Most recent flood crest
April 9, 2025
21.83 ft, minor flooding
Location
Gordon County
Near Calhoun (1.8 mi)

Flood stages

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

Flood categories, Oostanaula River at Calhoun
Action stage18.04Mar 21, 2001The level at which the NWS or its partners begin to take action
Flood stage (minor)21.037Apr 9, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage30.01Feb 19, 1990Some inundation of structures and roads near the stream
Major flood stage35.00—Extensive inundation of structures and roads

Every listed crest

44 crests from 1980 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Oostanaula River at Calhoun, 1980 to 2025 010203040ft Flood stage 21.0 ftMajor 35.0 ft Mar 24, 1980: 29.71 ft, minor flooding; 27,900 cubic feet per secondMar 31, 1981: 18.20 ft, action stage; 11,400 cubic feet per secondJan 6, 1982: 29.10 ft, minor flooding; 25,300 cubic feet per secondApr 10, 1983: 23.86 ft, minor flooding; 16,200 cubic feet per secondMay 7, 1984: 23.50 ft, minor flooding; 15,900 cubic feet per secondFeb 2, 1985: 19.72 ft, action stage; 12,700 cubic feet per secondFeb 18, 1986: 13.89 ft, below flood stage; 7,390 cubic feet per secondMar 2, 1987: 24.73 ft, minor flooding; 17,600 cubic feet per secondJan 21, 1988: 18.38 ft, action stage; 11,400 cubic feet per secondMar 7, 1989: 25.16 ft, minor flooding; 17,000 cubic feet per secondFeb 19, 1990: 34.15 ft, moderate flooding; 45,500 cubic feet per secondFeb 23, 1991: 24.22 ft, minor flooding; 16,900 cubic feet per secondApr 6, 2000: 25.57 ft, minor floodingMar 21, 2001: 20.23 ft, action stageJan 9, 2009: 25.74 ft, minor floodingNov 12, 2009: 22.56 ft, minor floodingDec 10, 2009: 21.00 ft, minor floodingFeb 7, 2010: 21.46 ft, minor floodingMar 11, 2011: 22.59 ft, minor floodingJan 19, 2013: 25.12 ft, minor floodingApr 30, 2013: 22.01 ft, minor floodingMay 9, 2013: 25.47 ft, minor floodingApr 9, 2014: 21.93 ft, minor floodingDec 3, 2015: 23.51 ft, minor floodingDec 28, 2015: 29.97 ft, minor flooding; 28,931 cubic feet per secondFeb 25, 2016: 22.22 ft, minor flooding; 14,816 cubic feet per secondFeb 13, 2018: 21.91 ft, minor flooding; 14,554 cubic feet per secondMar 4, 2018: 21.47 ft, minor flooding; 14,181 cubic feet per secondNov 16, 2018: 22.36 ft, minor flooding; 14,935 cubic feet per secondDec 10, 2018: 21.93 ft, minor flooding; 14,571 cubic feet per secondDec 29, 2018: 21.01 ft, minor flooding; 13,792 cubic feet per secondFeb 24, 2019: 28.00 ft, minor flooding; 23,362 cubic feet per secondMar 6, 2019: 21.08 ft, minor flooding; 13,851 cubic feet per secondFeb 9, 2020: 25.64 ft, minor flooding; 19,203 cubic feet per secondMar 28, 2020: 24.35 ft, minor flooding; 17,078 cubic feet per secondApr 16, 2020: 24.43 ft, minor flooding; 17,188 cubic feet per secondMar 21, 2021: 21.26 ft, minor flooding; 14,004 cubic feet per secondMar 28, 2021: 28.12 ft, minor flooding; 23,573 cubic feet per secondSep 4, 2021: 21.68 ft, minor flooding; 14,359 cubic feet per secondFeb 6, 2022: 22.50 ft, minor flooding; 15,053 cubic feet per secondJan 4, 2023: 7.05 ft, below flood stageMay 11, 2024: 22.54 ft, minor flooding; 15,087 cubic feet per secondFeb 14, 2025: 21.60 ft, minor flooding; 14,292 cubic feet per secondApr 9, 2025: 21.83 ft, minor flooding; 14,486 cubic feet per second Highest, 34.15 ft, Feb 19, 1990 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Oostanaula River at Calhoun 1980s: 6 1990s: 2 2000s: 4 2010s: 16 16 2020s: 10 1980s1990s2000s2010s2020s
  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

Highest listed crests, Oostanaula River at Calhoun
1Feb 19, 199034.15+13.15Moderate45,500
2Dec 28, 201529.97+8.97Minor28,931
3Mar 24, 198029.71+8.71Minor27,900
4Jan 6, 198229.10+8.10Minor25,300
5Mar 28, 202128.12+7.12Minor23,573
6Feb 24, 201928.00+7.00Minor23,362
7Jan 9, 200925.74+4.74Minor—
8Feb 9, 202025.64+4.64Minor19,203
9Apr 6, 200025.57+4.57Minor—
10May 9, 201325.47+4.47Minor—
11Mar 7, 198925.16+4.16Minor17,000
12Jan 19, 201325.12+4.12Minor—
13Mar 2, 198724.73+3.73Minor17,600
14Apr 16, 202024.43+3.43Minor17,188
15Mar 28, 202024.35+3.35Minor17,078
16Feb 23, 199124.22+3.22Minor16,900
17Apr 10, 198323.86+2.86Minor16,200
18Dec 3, 201523.51+2.51Minor—
19May 7, 198423.50+2.50Minor15,900
20Mar 11, 201122.59+1.59Minor—
21Nov 12, 200922.56+1.56Minor—
22May 11, 202422.54+1.54Minor15,087
23Feb 6, 202222.50+1.50Minor15,053
24Nov 16, 201822.36+1.36Minor14,935
25Feb 25, 201622.22+1.22Minor14,816
26Apr 30, 201322.01+1.01Minor—
27Apr 9, 201421.93+0.93Minor—
28Dec 10, 201821.93+0.93Minor14,571
29Feb 13, 201821.91+0.91Minor14,554
30Apr 9, 202521.83+0.83Minor14,486
31Sep 4, 202121.68+0.68Minor14,359
32Feb 14, 202521.60+0.60Minor14,292
33Mar 4, 201821.47+0.47Minor14,181
34Feb 7, 201021.46+0.46Minor—
35Mar 21, 202121.26+0.26Minor14,004
36Mar 6, 201921.08+0.08Minor13,851
37Dec 29, 201821.01+0.01Minor13,792
38Dec 10, 200921.000.00Minor—
39Mar 21, 200120.23−0.77Action—
40Feb 2, 198519.72−1.28Action12,700
41Jan 21, 198818.38−2.62Action11,400
42Mar 31, 198118.20−2.80Action11,400
43Feb 18, 198613.89−7.11Below flood stage7,390
44Jan 4, 20237.05−13.95Below flood stage—

The worst floods along the Oostanaula River

For this gauge's highest crests, the other gauges on the Oostanaula River that crested above flood stage within a week.

February 19, 1990: 34.15 ft here, moderate flooding

  • RomeGA · Feb 20, 1990 · 35.70 ft · Moderate · its highest
  • ResacaGA · Feb 18, 1990 · 32.59 ft · Moderate

December 28, 2015: 29.97 ft here, minor flooding

  • US 27 at RomeGA · Dec 30, 2015 · 29.55 ft · Moderate
  • ResacaGA · Dec 28, 2015 · 28.88 ft · Moderate
  • RomeGA · Dec 30, 2015 · 33.60 ft · Minor

March 24, 1980: 29.71 ft here, minor flooding

  • US 27 at RomeGA · Mar 22, 1980 · 29.60 ft · Moderate
  • ResacaGA · Mar 24, 1980 · 28.58 ft · Moderate

Gauges on the Oostanaula River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Oostanaula River
ResacaGA22.036.30 ft, Apr 1, 18863
Calhoun this gaugeGA21.034.15 ft, Feb 19, 19900
RomeGA30.035.70 ft, Feb 20, 19900
US 27 at RomeGA25.040.30 ft, Apr 1, 188615

Other gauges in Gordon County

Flood gauges in Gordon County
Pine Chapel Road near Resaca22.030.80 ft, Mar 30, 19510
Pine Chapel / Redbud25.034.20 ft, Mar 30, 19510
Resaca22.036.30 ft, Apr 1, 18863
GA 53 Spur at Calhoun18.020.21 ft, Dec 29, 20150

Gordon County: every hazard · River floods across the country · Georgia

NOAA National Water Prediction Service, gauge CALG1, 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.