Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Ouachita River at Moro Bay State Park

Highest listed crest 89.95 ftFlood stage 82.0 ft35 crests since 1964

The Ouachita River at Moro Bay State Park crested at major flood stage 7 times among the 35 crests the National Weather Service lists from 1964 to 2019. The highest, 89.95 ft on May 21, 1968, was major flooding, 7.95 feet above flood stage. 3 other gauges on the Ouachita River crested above flood stage within a week of it.

The gauge

Highest listed crest
89.95 ft
May 21, 1968
Flood stage
82.0 ft
Major flooding from 88.0 ft
Crests at major
7
25th of 54 gauges in Arkansas
Most recent flood crest
June 1, 2019
82.20 ft, minor flooding
Location
Calhoun County
Arkansas

Flood stages

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

Flood categories, Ouachita River at Moro Bay State Park
Flood stage (minor)82.07Jun 1, 2019Minimal or no property damage, but possibly some public threat
Moderate flood stage83.021May 15, 2019Some inundation of structures and roads near the stream
Major flood stage88.07Mar 2, 2018Extensive inundation of structures and roads

Every listed crest

35 crests from 1964 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Ouachita River at Moro Bay State Park, 1964 to 2019 8284868890ft Flood stage 82.0 ftMajor 88.0 ft May 3, 1964: 85.95 ft, moderate floodingFeb 20, 1965: 83.75 ft, moderate floodingMay 4, 1966: 88.70 ft, major floodingMay 15, 1967: 82.00 ft, minor floodingMay 21, 1968: 89.95 ft, major floodingApr 29, 1973: 88.60 ft, major floodingJun 16, 1974: 86.80 ft, moderate floodingJan 2, 1988: 89.00 ft, major floodingMar 16, 1990: 86.70 ft, moderate floodingMay 9, 1991: 87.90 ft, moderate floodingMar 18, 1992: 83.20 ft, moderate floodingDec 13, 1993: 85.20 ft, moderate floodingFeb 4, 1994: 82.60 ft, minor floodingApr 10, 1997: 85.30 ft, moderate floodingDec 25, 2001: 86.00 ft, moderate floodingFeb 1, 2002: 85.80 ft, moderate floodingMar 28, 2002: 85.00 ft, moderate floodingJan 25, 2007: 85.00 ft, moderate floodingApr 17, 2008: 85.40 ft, moderate floodingMay 14, 2009: 88.80 ft, major floodingNov 3, 2009: 88.70 ft, major floodingMay 10, 2011: 82.80 ft, minor floodingMar 29, 2012: 82.95 ft, minor floodingMar 16, 2016: 86.50 ft, moderate floodingApr 5, 2016: 82.80 ft, minor floodingMay 12, 2017: 83.60 ft, moderate floodingMar 2, 2018: 89.30 ft, major floodingApr 15, 2018: 82.90 ft, minor floodingDec 21, 2018: 83.70 ft, moderate floodingJan 11, 2019: 83.60 ft, moderate floodingFeb 28, 2019: 83.50 ft, moderate floodingMar 4, 2019: 84.10 ft, moderate floodingApr 25, 2019: 84.60 ft, moderate floodingMay 15, 2019: 86.00 ft, moderate floodingJun 1, 2019: 82.20 ft, minor flooding Highest, 89.95 ft, May 21, 1968 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Ouachita River at Moro Bay State Park 1960s: 5 1970s: 2 1980s: 1 1990s: 6 2000s: 7 2010s: 14 14 1960s1970s1980s1990s2000s2010s
  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, Ouachita River at Moro Bay State Park
1May 21, 196889.95+7.95Major—
2Mar 2, 201889.30+7.30Major—
3Jan 2, 198889.00+7.00Major—
4May 14, 200988.80+6.80Major—
5May 4, 196688.70+6.70Major—
6Nov 3, 200988.70+6.70Major—
7Apr 29, 197388.60+6.60Major—
8May 9, 199187.90+5.90Moderate—
9Jun 16, 197486.80+4.80Moderate—
10Mar 16, 199086.70+4.70Moderate—
11Mar 16, 201686.50+4.50Moderate—
12Dec 25, 200186.00+4.00Moderate—
13May 15, 201986.00+4.00Moderate—
14May 3, 196485.95+3.95Moderate—
15Feb 1, 200285.80+3.80Moderate—
16Apr 17, 200885.40+3.40Moderate—
17Apr 10, 199785.30+3.30Moderate—
18Dec 13, 199385.20+3.20Moderate—
19Mar 28, 200285.00+3.00Moderate—
20Jan 25, 200785.00+3.00Moderate—
21Apr 25, 201984.60+2.60Moderate—
22Mar 4, 201984.10+2.10Moderate—
23Feb 20, 196583.75+1.75Moderate—
24Dec 21, 201883.70+1.70Moderate—
25May 12, 201783.60+1.60Moderate—
26Jan 11, 201983.60+1.60Moderate—
27Feb 28, 201983.50+1.50Moderate—
28Mar 18, 199283.20+1.20Moderate—
29Mar 29, 201282.95+0.95Minor—
30Apr 15, 201882.90+0.90Minor—
31May 10, 201182.80+0.80Minor—
32Apr 5, 201682.80+0.80Minor—
33Feb 4, 199482.60+0.60Minor—
34Jun 1, 201982.20+0.20Minor—
35May 15, 196782.000.00Minor—

The worst floods along the Ouachita River

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

May 21, 1968: 89.95 ft here, major flooding

  • Thatcher L&DAR · May 23, 1968 · 94.90 ft · Major
  • CamdenAR · May 17, 1968 · 43.08 ft · Major
  • ArkadelphiaAR · May 14, 1968 · 30.08 ft · Major

March 2, 2018: 89.30 ft here, major flooding

  • CamdenAR · Feb 26, 2018 · 41.29 ft · Major
  • Thatcher L&DAR · Mar 2, 2018 · 93.69 ft · Moderate
  • ArkadelphiaAR · Mar 2, 2018 · 24.62 ft · Moderate

January 2, 1988: 89.00 ft here, major flooding

Gauges on the Ouachita River

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

Flood gauges on the Ouachita River
ArkadelphiaAR17.030.30 ft, Mar 30, 194513
CamdenAR26.043.87 ft, May 5, 19586
Columbia Lock and DamLA65.072.37 ft, May 5, 19912
Felsenthal Lock and DamAR70.086.40 ft, May 10, 19915
MonroeLA40.048.60 ft, May 4, 192717
Moro Bay State Park this gaugeAR82.089.95 ft, May 21, 19687
Thatcher L&DAR79.096.30 ft, Apr 6, 19452

Calhoun County: every hazard · River floods across the country · Arkansas

NOAA National Water Prediction Service, gauge MOBA4, 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.