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Mississippi River at St. Louis

Highest listed crest 49.58 ftFlood stage 30.0 ft152 crests since 1785

The Mississippi River at St. Louis crested at major flood stage 9 times among the 152 crests the National Weather Service lists from 1785 to 2026. The highest, 49.58 ft on August 1, 1993, was major flooding, 19.58 feet above flood stage. 10 other gauges on the Mississippi River crested above flood stage within a week of it, 8 at their own highest listed crest.

The gauge

Highest listed crest
49.58 ft
August 1, 1993; 1,070,000 cubic feet per second
Flood stage
30.0 ft
Major flooding from 40.0 ft
Crests at major
9
21st of 173 gauges in Missouri
Most recent flood crest
July 10, 2024
32.33 ft, minor flooding
Location
St. Louis city
Near East St. Louis (2.8 mi), St. Louis (3.5 mi), Cahokia Heights (4.1 mi)

Flood stages

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

Flood categories, Mississippi River at St. Louis
Action stage28.07May 1, 2026The level at which the NWS or its partners begin to take action
Flood stage (minor)30.0109Jul 10, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage35.023Jul 1, 2015Some inundation of structures and roads near the stream
Major flood stage40.09Jun 9, 2019Extensive inundation of structures and roads

Every listed crest

152 crests from 1785 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Mississippi River at St. Louis, 1785 to 2026 1020304050ft Flood stage 30.0 ftMajor 40.0 ft Apr 1, 1785: 42.00 ft, major floodingJun 10, 1851: 36.60 ft, moderate floodingApr 26, 1862: 31.45 ft, minor flooding; 712,000 cubic feet per secondJul 24, 1869: 29.31 ft, action stage; 615,000 cubic feet per secondAug 3, 1875: 29.80 ft, action stage; 637,000 cubic feet per secondMay 10, 1876: 32.00 ft, minor flooding; 741,000 cubic feet per secondJul 7, 1876: 30.10 ft, minor flooding; 651,000 cubic feet per secondMay 5, 1881: 33.65 ft, minor flooding; 822,000 cubic feet per secondJul 5, 1882: 32.39 ft, minor flooding; 739,000 cubic feet per secondJun 25, 1883: 34.80 ft, minor flooding; 863,000 cubic feet per secondMay 19, 1892: 36.00 ft, moderate flooding; 926,000 cubic feet per secondJul 9, 1892: 31.10 ft, minor flooding; 676,000 cubic feet per secondMay 3, 1893: 31.60 ft, minor flooding; 700,000 cubic feet per secondMay 2, 1897: 30.90 ft, minor flooding; 645,000 cubic feet per secondJun 10, 1903: 38.00 ft, moderate flooding; 1,019,000 cubic feet per secondApr 29, 1904: 33.60 ft, minor flooding; 778,000 cubic feet per secondSep 21, 1905: 30.20 ft, minor flooding; 613,200 cubic feet per secondJun 20, 1908: 34.95 ft, minor flooding; 850,000 cubic feet per secondJul 16, 1909: 35.25 ft, moderate flooding; 861,000 cubic feet per secondApr 5, 1912: 30.80 ft, minor flooding; 641,000 cubic feet per secondApr 30, 1912: 30.30 ft, minor flooding; 618,000 cubic feet per secondJun 4, 1915: 31.30 ft, minor flooding; 664,000 cubic feet per secondJun 24, 1915: 31.60 ft, minor flooding; 678,200 cubic feet per secondJul 23, 1915: 31.30 ft, minor flooding; 664,000 cubic feet per secondAug 5, 1915: 30.10 ft, minor flooding; 609,000 cubic feet per secondAug 22, 1915: 30.40 ft, minor flooding; 622,000 cubic feet per secondJan 31, 1916: 31.40 ft, minor flooding; 676,100 cubic feet per secondMay 31, 1916: 30.00 ft, minor flooding; 616,000 cubic feet per secondJun 14, 1917: 32.90 ft, minor flooding; 743,400 cubic feet per secondApr 20, 1922: 33.95 ft, minor flooding; 786,000 cubic feet per secondApr 26, 1927: 36.10 ft, moderate flooding; 889,300 cubic feet per secondApr 12, 1929: 30.50 ft, minor flooding; 641,000 cubic feet per secondApr 28, 1929: 34.60 ft, minor flooding; 739,000 cubic feet per secondMay 21, 1929: 33.20 ft, minor flooding; 623,000 cubic feet per secondJun 8, 1929: 33.00 ft, minor flooding; 749,000 cubic feet per secondJun 7, 1935: 33.52 ft, minor flooding; 649,000 cubic feet per secondApr 20, 1939: 30.13 ft, minor flooding; 529,000 cubic feet per secondJun 30, 1942: 34.48 ft, minor flooding; 666,000 cubic feet per secondJun 26, 1943: 34.90 ft, minor flooding; 620,000 cubic feet per secondApr 16, 1944: 31.20 ft, minor flooding; 535,000 cubic feet per secondApr 30, 1944: 39.14 ft, moderate flooding; 844,000 cubic feet per secondApr 3, 1945: 32.40 ft, minor flooding; 547,000 cubic feet per secondApr 21, 1945: 35.30 ft, moderate flooding; 610,000 cubic feet per secondMay 22, 1945: 32.10 ft, minor flooding; 535,000 cubic feet per secondJun 13, 1945: 35.30 ft, moderate flooding; 585,000 cubic feet per secondApr 18, 1947: 30.80 ft, minor flooding; 581,000 cubic feet per secondApr 28, 1947: 34.30 ft, minor flooding; 638,000 cubic feet per secondJul 2, 1947: 40.30 ft, major flooding; 783,000 cubic feet per secondMar 27, 1948: 34.63 ft, minor flooding; 633,000 cubic feet per secondMay 8, 1951: 30.80 ft, minor flooding; 560,000 cubic feet per secondApr 29, 1952: 33.83 ft, minor flooding; 684,000 cubic feet per secondApr 10, 1960: 33.78 ft, minor flooding; 670,000 cubic feet per secondMay 11, 1961: 33.20 ft, minor flooding; 588,000 cubic feet per secondMar 25, 1962: 30.18 ft, minor flooding; 591,000 cubic feet per secondSep 28, 1965: 30.44 ft, minor flooding; 552,000 cubic feet per secondJul 1, 1967: 30.49 ft, minor flooding; 530,000 cubic feet per secondApr 22, 1969: 31.00 ft, minor flooding; 532,000 cubic feet per secondMay 2, 1969: 30.70 ft, minor flooding; 513,000 cubic feet per secondOct 16, 1969: 32.30 ft, minor flooding; 532,000 cubic feet per secondMay 19, 1970: 30.89 ft, minor flooding; 525,000 cubic feet per secondApr 28, 1973: 43.23 ft, major flooding; 852,000 cubic feet per secondJun 2, 1973: 31.14 ft, minor flooding; 467,000 cubic feet per secondMay 24, 1974: 33.00 ft, minor flooding; 584,000 cubic feet per secondJun 3, 1974: 31.13 ft, minor flooding; 532,000 cubic feet per secondJun 14, 1974: 30.65 ft, minor flooding; 508,000 cubic feet per secondApr 27, 1975: 29.95 ft, action stage; 483,000 cubic feet per secondMar 27, 1978: 30.38 ft, minor flooding; 570,000 cubic feet per secondApr 14, 1979: 37.79 ft, moderate flooding; 694,000 cubic feet per secondApr 24, 1979: 30.10 ft, minor flooding; 486,000 cubic feet per secondMay 7, 1979: 30.60 ft, minor flooding; 474,000 cubic feet per secondMay 21, 1981: 30.00 ft, minor flooding; 511,000 cubic feet per secondJun 5, 1982: 31.70 ft, minor flooding; 516,000 cubic feet per secondDec 7, 1982: 39.27 ft, moderate flooding; 739,000 cubic feet per secondApr 10, 1983: 36.50 ft, moderate flooding; 713,000 cubic feet per secondMay 4, 1983: 39.20 ft, moderate flooding; 699,000 cubic feet per secondApr 12, 1984: 30.53 ft, minor flooding; 507,000 cubic feet per secondApr 24, 1984: 34.02 ft, minor flooding; 579,000 cubic feet per secondMay 7, 1984: 31.48 ft, minor flooding; 507,000 cubic feet per secondJun 15, 1984: 30.50 ft, minor flooding; 485,000 cubic feet per secondJun 28, 1984: 30.60 ft, minor flooding; 483,000 cubic feet per secondFeb 28, 1985: 34.40 ft, minor flooding; 690,000 cubic feet per secondMar 8, 1985: 33.50 ft, minor flooding; 657,000 cubic feet per secondJun 28, 1985: 30.60 ft, minor flooding; 483,000 cubic feet per secondNov 22, 1985: 33.09 ft, minor flooding; 589,000 cubic feet per secondMay 24, 1986: 30.40 ft, minor flooding; 513,000 cubic feet per secondOct 9, 1986: 39.13 ft, moderate flooding; 728,000 cubic feet per secondMay 18, 1990: 33.18 ft, minor flooding; 605,000 cubic feet per secondMay 30, 1990: 30.60 ft, minor flooding; 493,000 cubic feet per secondJun 25, 1990: 31.10 ft, minor flooding; 500,000 cubic feet per secondApr 8, 1993: 30.20 ft, minor flooding; 497,000 cubic feet per secondApr 17, 1993: 36.60 ft, moderate flooding; 670,000 cubic feet per secondAug 1, 1993: 49.58 ft, major flooding; 1,070,000 cubic feet per secondOct 1, 1993: 38.91 ft, moderate flooding; 693,000 cubic feet per secondApr 15, 1994: 36.61 ft, moderate flooding; 629,000 cubic feet per secondMay 3, 1994: 31.00 ft, minor flooding; 468,000 cubic feet per secondMay 22, 1995: 41.89 ft, major flooding; 800,000 cubic feet per secondMay 16, 1996: 33.80 ft, minor flooding; 592,000 cubic feet per secondJun 2, 1996: 35.35 ft, moderate flooding; 615,000 cubic feet per secondMar 1, 1997: 32.28 ft, minor flooding; 544,000 cubic feet per secondApr 20, 1997: 30.80 ft, minor flooding; 501,000 cubic feet per secondApr 6, 1998: 31.95 ft, minor flooding; 534,000 cubic feet per secondApr 17, 1998: 33.36 ft, minor flooding; 547,000 cubic feet per secondJun 24, 1998: 30.30 ft, minor flooding; 484,000 cubic feet per secondMay 8, 1999: 32.62 ft, minor flooding; 551,000 cubic feet per secondJun 29, 2000: 25.43 ft, below flood stage; 386,000 cubic feet per secondMay 21, 2001: 30.62 ft, minor flooding; 503,200 cubic feet per secondJun 10, 2001: 34.79 ft, minor flooding; 612,000 cubic feet per secondMay 17, 2002: 37.34 ft, moderate flooding; 682,000 cubic feet per secondMay 12, 2003: 25.00 ft, below flood stage; 400,000 cubic feet per secondMay 29, 2004: 28.19 ft, action stage; 463,000 cubic feet per secondJan 7, 2005: 28.80 ft, action stage; 479,000 cubic feet per secondMay 5, 2006: 19.02 ft, below flood stage; 303,000 cubic feet per secondMay 11, 2007: 29.30 ft, action stage; 490,000 cubic feet per secondMar 21, 2008: 30.79 ft, minor flooding; 525,000 cubic feet per secondApr 13, 2008: 31.53 ft, minor flooding; 537,000 cubic feet per secondApr 28, 2008: 30.95 ft, minor flooding; 525,000 cubic feet per secondMay 14, 2008: 30.74 ft, minor flooding; 520,000 cubic feet per secondJul 1, 2008: 38.67 ft, moderate flooding; 720,000 cubic feet per secondAug 2, 2008: 30.73 ft, minor flooding; 520,000 cubic feet per secondSep 18, 2008: 36.72 ft, moderate flooding; 664,000 cubic feet per secondMar 16, 2009: 27.24 ft, below flood stage; 447,756 cubic feet per secondMay 4, 2009: 32.22 ft, minor flooding; 550,000 cubic feet per secondMay 21, 2009: 33.24 ft, minor flooding; 574,000 cubic feet per secondNov 2, 2009: 32.77 ft, minor flooding; 563,000 cubic feet per secondMar 18, 2010: 30.12 ft, minor flooding; 502,000 cubic feet per secondMar 29, 2010: 33.03 ft, minor flooding; 569,000 cubic feet per secondApr 5, 2010: 30.24 ft, minor flooding; 505,000 cubic feet per secondApr 29, 2010: 30.44 ft, minor flooding; 509,000 cubic feet per secondMay 20, 2010: 34.83 ft, minor flooding; 613,000 cubic feet per secondJun 28, 2010: 35.18 ft, moderate flooding; 622,000 cubic feet per secondJul 25, 2010: 32.29 ft, minor flooding; 551,000 cubic feet per secondMay 1, 2011: 34.93 ft, minor flooding; 615,000 cubic feet per secondMay 30, 2011: 33.16 ft, minor flooding; 572,000 cubic feet per secondJul 2, 2011: 33.89 ft, minor flooding; 601,000 cubic feet per secondApr 25, 2013: 35.45 ft, moderate flooding; 658,100 cubic feet per secondJun 4, 2013: 40.52 ft, major flooding; 770,000 cubic feet per secondJul 11, 2014: 30.99 ft, minor flooding; 551,800 cubic feet per secondJun 10, 2015: 30.15 ft, minor flooding; 503,500 cubic feet per secondJul 1, 2015: 38.45 ft, moderate flooding; 700,000 cubic feet per secondDec 20, 2015: 30.32 ft, minor flooding; 510,000 cubic feet per secondJan 1, 2016: 42.52 ft, major flooding; 833,000 cubic feet per secondMay 6, 2017: 41.70 ft, major flooding; 807,700 cubic feet per secondMay 25, 2017: 31.76 ft, minor flooding; 540,000 cubic feet per secondOct 16, 2018: 32.63 ft, minor flooding; 572,000 cubic feet per secondJun 9, 2019: 46.02 ft, major flooding; 941,000 cubic feet per secondOct 13, 2019: 32.15 ft, minor floodingJan 13, 2020: 30.59 ft, minor floodingMar 22, 2020: 30.41 ft, minor flooding; 515,000 cubic feet per secondJun 1, 2020: 31.94 ft, minor flooding; 549,000 cubic feet per secondMar 21, 2021: 31.46 ft, minor flooding; 533,000 cubic feet per secondJul 10, 2024: 32.33 ft, minor flooding; 553,000 cubic feet per secondMay 1, 2026: 29.68 ft, action stage; 517,000 cubic feet per second Highest, 49.58 ft, Aug 1, 1993 180018401880192019602000

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Mississippi River at St. Louis 1780s: 1 1790s: 0 1800s: 0 1810s: 0 1820s: 0 1830s: 0 1840s: 0 1850s: 1 1860s: 1 1870s: 2 1880s: 3 1890s: 4 1900s: 5 1910s: 10 1920s: 6 1930s: 2 1940s: 12 1950s: 2 1960s: 8 1970s: 10 1980s: 16 1990s: 18 2000s: 13 2010s: 22 22 2020s: 5 1780s1800s1820s1840s1860s1880s1900s1920s1940s1960s1980s2000s2020s
  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. 3 crests measured on an earlier gauge datum are left out: 41.32 ft on Jun 27, 1844; 38.94 ft on May 24, 1943; 40.28 ft on Jul 21, 1951.

Highest crests

The 50 highest of 152 listed crests.

Highest listed crests, Mississippi River at St. Louis
1Aug 1, 199349.58+19.58Major1,070,000
2Jun 9, 201946.02+16.02Major941,000
3Apr 28, 197343.23+13.23Major852,000
4Jan 1, 201642.52+12.52Major833,000
5Apr 1, 178542.00+12.00Major—
6May 22, 199541.89+11.89Major800,000
7May 6, 201741.70+11.70Major807,700
8Jun 4, 201340.52+10.52Major770,000
9Jul 2, 194740.30+10.30Major783,000
10Dec 7, 198239.27+9.27Moderate739,000
11May 4, 198339.20+9.20Moderate699,000
12Apr 30, 194439.14+9.14Moderate844,000
13Oct 9, 198639.13+9.13Moderate728,000
14Oct 1, 199338.91+8.91Moderate693,000
15Jul 1, 200838.67+8.67Moderate720,000
16Jul 1, 201538.45+8.45Moderate700,000
17Jun 10, 190338.00+8.00Moderate1,019,000
18Apr 14, 197937.79+7.79Moderate694,000
19May 17, 200237.34+7.34Moderate682,000
20Sep 18, 200836.72+6.72Moderate664,000
21Apr 15, 199436.61+6.61Moderate629,000
22Jun 10, 185136.60+6.60Moderate—
23Apr 17, 199336.60+6.60Moderate670,000
24Apr 10, 198336.50+6.50Moderate713,000
25Apr 26, 192736.10+6.10Moderate889,300
26May 19, 189236.00+6.00Moderate926,000
27Apr 25, 201335.45+5.45Moderate658,100
28Jun 2, 199635.35+5.35Moderate615,000
29Apr 21, 194535.30+5.30Moderate610,000
30Jun 13, 194535.30+5.30Moderate585,000
31Jul 16, 190935.25+5.25Moderate861,000
32Jun 28, 201035.18+5.18Moderate622,000
33Jun 20, 190834.95+4.95Minor850,000
34May 1, 201134.93+4.93Minor615,000
35Jun 26, 194334.90+4.90Minor620,000
36May 20, 201034.83+4.83Minor613,000
37Jun 25, 188334.80+4.80Minor863,000
38Jun 10, 200134.79+4.79Minor612,000
39Mar 27, 194834.63+4.63Minor633,000
40Apr 28, 192934.60+4.60Minor739,000
41Jun 30, 194234.48+4.48Minor666,000
42Feb 28, 198534.40+4.40Minor690,000
43Apr 28, 194734.30+4.30Minor638,000
44Apr 24, 198434.02+4.02Minor579,000
45Apr 20, 192233.95+3.95Minor786,000
46Jul 2, 201133.89+3.89Minor601,000
47Apr 29, 195233.83+3.83Minor684,000
48May 16, 199633.80+3.80Minor592,000
49Apr 10, 196033.78+3.78Minor670,000
50May 5, 188133.65+3.65Minor822,000

The worst floods along the Mississippi River

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

August 1, 1993: 49.58 ft here, major flooding

June 9, 2019: 46.02 ft here, major flooding

April 28, 1973: 43.23 ft here, major flooding

Gauges on the Mississippi River

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

Flood gauges on the Mississippi River
TiptonvilleMO37.048.35 ft, May 5, 20112
Alma - Pool 5MN672.0672.13 ft, Apr 16, 20010
AltonIL21.039.55 ft, Aug 1, 19937
Baton RougeLA35.047.28 ft, May 15, 192731
BellevueIL17.023.51 ft, Apr 26, 196511
BrainerdMN16.017.61 ft, Jun 28, 20120
BrownsvilleMN635.0640.20 ft, Apr 22, 19650
BurlingtonIL15.025.73 ft, Jun 17, 200836
CamancheIA17.024.65 ft, Apr 28, 196520
Canton Lock and Dam 20MO15.027.88 ft, Jul 9, 19933
Cape GirardeauMO32.048.86 ft, Jan 2, 201615
CaruthersvilleMO32.047.61 ft, May 7, 20112
ChesterIL27.049.74 ft, Aug 7, 19939
Clarksville Lock and Dam 24MO25.037.73 ft, Jul 29, 199310
ClaytonIA620.0627.28 ft, Apr 24, 19650
DakotaMN644.0649.08 ft, Apr 21, 19650
DonaldsonvilleLA27.036.01 ft, May 15, 19273
Dubuque (LD11)IA16.025.69 ft, Apr 26, 196513
Dubuque (Railroad Bridge)IA17.026.81 ft, Apr 26, 196518
Fort RipleyMN10.514.15 ft, Apr 8, 19970
Fridley abv 37th Ave NEMN16.020.00 ft, Apr 17, 19656
FultonIL16.024.75 ft, Apr 28, 196513
GladstoneIL10.022.46 ft, Jun 17, 200824
GraftonIL20.038.17 ft, Aug 1, 199315
Gregory LandingMO15.028.49 ft, Jul 9, 19934
HannibalMO17.031.80 ft, Jul 15, 199310
HelenaAR44.060.21 ft, Feb 12, 19374
HerculaneumMO26.029.79 ft, Jul 10, 20240
HickmanKY34.054.29 ft, May 2, 20113
Hwy 169 at ChamplinMN12.017.96 ft, Apr 12, 19653
Hwy 610 in Brooklyn ParkMN12.019.53 ft, Apr 17, 19654
Illinois CityIA15.024.10 ft, Jul 9, 199321
KeithsburgIA14.024.49 ft, Jun 17, 200822
KeokukIA16.027.58 ft, Jul 10, 199324
La Crosse - Pool 8WI12.017.89 ft, Apr 22, 19654
LaGrangeMO17.030.00 ft, Jul 13, 19934
Lake CityWI16.022.18 ft, Apr 19, 19653
Lansing - Pool 9IA17.022.50 ft, Apr 24, 19651
LeClaireIA11.017.75 ft, Apr 28, 196516
LouisianaMO15.028.40 ft, Jul 28, 19934
McGregorIA16.025.38 ft, Apr 24, 19653
Mel Price (Alton) Lock and DamIL21.042.72 ft, Aug 1, 19938
MemphisTN34.048.70 ft, Feb 10, 19372
MuscatineIA16.025.61 ft, Jul 9, 199321
NatchezMS48.061.95 ft, May 19, 20116
New BostonIL15.025.90 ft, Jul 9, 199322
New MadridMO34.048.35 ft, May 6, 20114
New OrleansLA17.021.27 ft, Apr 25, 19225
OsceolaAR28.050.90 ft, Feb 7, 193742
QuincyIL19.032.13 ft, Jul 13, 19937
Quincy Lock and Dam 21IL18.031.30 ft, Jul 13, 19937
Red River LandingLA48.063.39 ft, May 18, 20110
Red WingMN14.020.70 ft, Apr 18, 19659
ReserveLA22.026.00 ft, Jun 11, 19291
Rock IslandIL15.022.70 ft, May 2, 201920
Saverton Lock and Dam 22MO16.029.58 ft, Jul 25, 19939
St. CloudMN9.011.44 ft, Apr 8, 19971
St. Louis this gaugeMO30.049.58 ft, Aug 1, 19939
St. PaulMN14.026.01 ft, Apr 16, 196516
ThebesIL33.047.74 ft, Jan 2, 201612
Tunica Mhoon LandingMS30.053.20 ft, Feb 10, 19375
VicksburgLA43.057.10 ft, May 19, 201112
Wabasha - Pool 4MN12.020.05 ft, Apr 19, 19657
Winfield Lock and Dam 25MO26.039.62 ft, Aug 1, 19939
Winona - Pool 6MN13.020.77 ft, Apr 19, 19655
Lock and Dam 10 - GuttenbergIA15.023.65 ft, Apr 24, 19652
Lock and Dam 2 - HastingsMN15.025.90 ft, Apr 17, 196512
Lock and Dam 3 - Red WingMN680.5687.77 ft, Apr 19, 19658
Lock and Dam 4 - AlmaWI16.019.78 ft, Apr 19, 19652
Lock and Dam 5 - Minnesota CityMN660.0667.85 ft, Apr 19, 19654
Lock and Dam 5a - WinonaMN655.0663.35 ft, Apr 19, 19654
Lock and Dam 6 - TrempealeauMN647.0653.02 ft, Apr 21, 19654
Lock and Dam 7 - La CrescentMN641.0647.38 ft, Apr 21, 19652
Lock and Dam 8 - GenoaWI631.0638.40 ft, Apr 22, 19653
Lock and Dam 9 - LynxvilleWI625.0633.16 ft, Apr 24, 19653
AitkinMN13.022.49 ft, May 20, 195011
Arkansas CityAR37.059.20 ft, Apr 21, 192715
GreenvilleAR48.065.40 ft, Apr 21, 192718

St. Louis city: every hazard · River floods across the country · Missouri

NOAA National Water Prediction Service, gauge EADM7, 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.