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Grace Coolidge Creek near Custer

Highest listed crest 12.76 ftFlood stage 9.5 ft60 crests since 1972

The Grace Coolidge Creek near Custer crested at major flood stage 2 times among the 60 crests the National Weather Service lists from 1972 to 2024. The highest, 12.76 ft on February 9, 1979, was major flooding, 3.26 feet above flood stage.

The gauge

Highest listed crest
12.76 ft
February 9, 1979
Flood stage
9.5 ft
Major flooding from 11.0 ft
Crests at major
2
42nd of 155 gauges in South Dakota
Most recent flood crest
May 28, 2019
10.67 ft, moderate flooding
Location
Custer County
South Dakota

Flood stages

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

Flood categories, Grace Coolidge Creek near Custer
Action stage8.021Jan 19, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)9.52Apr 10, 1997Minimal or no property damage, but possibly some public threat
Moderate flood stage10.05May 28, 2019Some inundation of structures and roads near the stream
Major flood stage11.02May 8, 1995Extensive inundation of structures and roads

Every listed crest

60 crests from 1972 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Grace Coolidge Creek near Custer, 1972 to 2024 68101214ft Flood stage 9.5 ftMajor 11.0 ft Jun 10, 1972: 10.35 ft, moderate flooding; 709 cubic feet per secondJun 15, 1976: 10.90 ft, moderate flooding; 980 cubic feet per secondJul 27, 1977: 8.11 ft, action stage; 63 cubic feet per secondMay 18, 1978: 8.48 ft, action stage; 102 cubic feet per secondFeb 9, 1979: 12.76 ft, major floodingJul 4, 1979: 8.89 ft, action stage; 226 cubic feet per secondOct 11, 1979: 7.53 ft, below flood stage; 15 cubic feet per secondMay 18, 1981: 9.49 ft, action stage; 370 cubic feet per secondJun 3, 1982: 7.98 ft, below flood stage; 41 cubic feet per secondMay 7, 1983: 7.58 ft, below flood stage; 16 cubic feet per secondMay 10, 1984: 8.03 ft, action stage; 41 cubic feet per secondOct 5, 1984: 7.02 ft, below flood stage; 2 cubic feet per secondJun 10, 1986: 7.76 ft, below flood stage; 22 cubic feet per secondMar 21, 1987: 8.45 ft, action stage; 102 cubic feet per secondAug 3, 1988: 10.21 ft, moderate flooding; 621 cubic feet per secondSep 7, 1989: 10.84 ft, moderate flooding; 1,030 cubic feet per secondMay 30, 1990: 9.72 ft, minor flooding; 442 cubic feet per secondJun 3, 1991: 9.08 ft, action stage; 254 cubic feet per secondJun 22, 1992: 7.60 ft, below flood stage; 15 cubic feet per secondJun 7, 1993: 9.26 ft, action stage; 298 cubic feet per secondOct 14, 1993: 7.64 ft, below flood stage; 19 cubic feet per secondMay 8, 1995: 11.39 ft, major flooding; 765 cubic feet per secondMay 27, 1996: 8.43 ft, action stage; 140 cubic feet per secondApr 10, 1997: 9.95 ft, minor floodingMay 25, 1997: 9.01 ft, action stage; 236 cubic feet per secondJun 18, 1998: 8.60 ft, action stage; 162 cubic feet per secondApr 26, 1999: 8.06 ft, action stage; 70 cubic feet per secondApr 24, 2000: 8.18 ft, action stage; 77 cubic feet per secondDec 6, 2000: 7.62 ft, below flood stageJun 4, 2001: 7.51 ft, below flood stage; 24 cubic feet per secondMay 11, 2002: 7.19 ft, below flood stage; 11 cubic feet per secondMay 8, 2003: 7.80 ft, below flood stage; 45 cubic feet per secondAug 4, 2004: 6.79 ft, below flood stage; 3 cubic feet per secondJul 5, 2005: 7.83 ft, below flood stage; 47 cubic feet per secondJun 9, 2006: 7.52 ft, below flood stage; 25 cubic feet per secondAug 17, 2007: 7.69 ft, below flood stage; 36 cubic feet per secondMay 24, 2008: 8.69 ft, action stage; 203 cubic feet per secondJul 11, 2009: 7.70 ft, below flood stage; 37 cubic feet per secondMay 24, 2010: 9.15 ft, action stage; 262 cubic feet per secondMay 30, 2011: 8.42 ft, action stage; 128 cubic feet per secondJan 21, 2012: 7.20 ft, below flood stageApr 27, 2012: 7.18 ft, below flood stage; 11 cubic feet per secondDec 28, 2012: 7.40 ft, below flood stageAug 3, 2013: 7.15 ft, below flood stage; 11 cubic feet per secondOct 11, 2013: 9.14 ft, action stage; 260 cubic feet per secondMay 24, 2015: 9.31 ft, action stage; 288 cubic feet per secondMay 22, 2016: 7.81 ft, below flood stage; 46 cubic feet per secondDec 16, 2016: 7.77 ft, below flood stageJul 28, 2017: 7.12 ft, below flood stage; 9 cubic feet per secondJun 22, 2018: 8.09 ft, action stage; 77 cubic feet per secondMay 28, 2019: 10.67 ft, moderate flooding; 571 cubic feet per secondOct 31, 2019: 7.52 ft, below flood stageMay 17, 2020: 7.31 ft, below flood stage; 13 cubic feet per secondMay 23, 2021: 7.67 ft, below flood stage; 32 cubic feet per secondDec 29, 2021: 7.26 ft, below flood stageMay 31, 2022: 7.19 ft, below flood stage; 7 cubic feet per secondDec 26, 2022: 7.76 ft, below flood stageSep 14, 2023: 7.52 ft, below flood stage; 23 cubic feet per secondOct 12, 2023: 8.03 ft, action stage; 70 cubic feet per secondJan 19, 2024: 8.25 ft, action stage Highest, 12.76 ft, Feb 9, 1979 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Grace Coolidge Creek near Custer 1970s: 3 3 1980s: 2 1990s: 3 2000s: 0 2010s: 1 2020s: 0 1970s1980s1990s2000s2010s2020s
  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 60 listed crests.

Highest listed crests, Grace Coolidge Creek near Custer
1Feb 9, 197912.76+3.26Major—
2May 8, 199511.39+1.89Major765
3Jun 15, 197610.90+1.40Moderate980
4Sep 7, 198910.84+1.34Moderate1,030
5May 28, 201910.67+1.17Moderate571
6Jun 10, 197210.35+0.85Moderate709
7Aug 3, 198810.21+0.71Moderate621
8Apr 10, 19979.95+0.45Minor—
9May 30, 19909.72+0.22Minor442
10May 18, 19819.49−0.01Action370
11May 24, 20159.31−0.19Action288
12Jun 7, 19939.26−0.24Action298
13May 24, 20109.15−0.35Action262
14Oct 11, 20139.14−0.36Action260
15Jun 3, 19919.08−0.42Action254
16May 25, 19979.01−0.49Action236
17Jul 4, 19798.89−0.61Action226
18May 24, 20088.69−0.81Action203
19Jun 18, 19988.60−0.90Action162
20May 18, 19788.48−1.02Action102
21Mar 21, 19878.45−1.05Action102
22May 27, 19968.43−1.07Action140
23May 30, 20118.42−1.08Action128
24Jan 19, 20248.25−1.25Action—
25Apr 24, 20008.18−1.32Action77
26Jul 27, 19778.11−1.39Action63
27Jun 22, 20188.09−1.41Action77
28Apr 26, 19998.06−1.44Action70
29May 10, 19848.03−1.47Action41
30Oct 12, 20238.03−1.47Action70
31Jun 3, 19827.98−1.52Below flood stage41
32Jul 5, 20057.83−1.67Below flood stage47
33May 22, 20167.81−1.69Below flood stage46
34May 8, 20037.80−1.70Below flood stage45
35Dec 16, 20167.77−1.73Below flood stage—
36Jun 10, 19867.76−1.74Below flood stage22
37Dec 26, 20227.76−1.74Below flood stage—
38Jul 11, 20097.70−1.80Below flood stage37
39Aug 17, 20077.69−1.81Below flood stage36
40May 23, 20217.67−1.83Below flood stage32
41Oct 14, 19937.64−1.86Below flood stage19
42Dec 6, 20007.62−1.88Below flood stage—
43Jun 22, 19927.60−1.90Below flood stage15
44May 7, 19837.58−1.92Below flood stage16
45Oct 11, 19797.53−1.97Below flood stage15
46Jun 9, 20067.52−1.98Below flood stage25
47Oct 31, 20197.52−1.98Below flood stage—
48Sep 14, 20237.52−1.98Below flood stage23
49Jun 4, 20017.51−1.99Below flood stage24
50Dec 28, 20127.40−2.10Below flood stage—

Other gauges in Custer County

Flood gauges in Custer County
Hermosa8.017.72 ft, Jun 10, 19723
Hermosa9.012.00 ft, Jun 9, 19720
Buffalo Gap13.013.15 ft, May 21, 19780

Custer County: every hazard · River floods across the country · South Dakota

NOAA National Water Prediction Service, gauge GCOS2, 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.