Lake Ouachita Average Level By Year and Month

Lake Ouachita Monthly Levels, Highs / Lows From 2005 thru 2017
Fluctuation by year shown. Flood Stage is 578 Ft. above sea level.

Current Time Lake Level —— Current Water Temperature.

The U.S. Army Corps of Engineers considers 585 feet to be a key level for some facilities, including campsites.

Certain roadways become inaccessible once Ouachita rises above 585 feet above sea level.
The average water fluctuation from 2005 to 2015 was 14.64

All readings are above sea level.
Average depth of Ouachita is 50 feet.
Deepest area is a little over 200 feet (depending on Lake Level). Location: last bend of old river channel toward dam.
Lake Ouachita has a 1100 square mile drainage area.

Highest in Last 5 years – 586.96 June, 2013
Lowest in Last 5 years – 567.25 December, 2017

Lake Ouachita Monthly High / Low For 2018 – Click for Current level.

February 2018 Wettest Feb. in Arkansas History Since records have been kept.
Lake Level 568.69 FEB 20th 2018 the start of FEB. rain event.
March 3rd 11 am 584.25 Crested
FEB. 20th 8 am 568.69

Lake Ouachita Rose +15.56 feet Between FEB 20th and March 3rd. 2018

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi567.92 582.03 584.25579.54577.79577.24575.06573.46572.01573.39578.08577.9584.25
Low567.45567.88576.68577.47577.24575.18573.52572.10569.97571.0575.52577.1567.45
Flux..4714.157.522.05.552.061.851.362.042.392.56 Flux 16.80

Lake Ouachita Monthly High / Low For 2017

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi570.48571.09573.50579.56581.35576.82576.01573.60571.44568.91567.96567.98581.35
Low569.70569.71571.84573.82576.84576.04573.70571.63568.95567.98567.48567.25567.25
Flux..781.381.665.744.51.782.311.972.49.93.48.73Flux 13.93 YTD

Lake Ouachita Monthly High / Low For 2016   

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi585.65577.07579.08577.54581.46577.05574.93575.54574.95572.98570.69570.14585.65
Low577.12575.36577.58579.27577.14575.27573.18572.62572.98570.72570.11569.27569.27
Flux8.531.711.501.694.321.781.752.921.972.26.580.87Flux 16.38 YTD


Lake Ouachita Monthly High / Low For 2015:
In the 24 hour period from 5 PM Dec 27th, till 5 pm Dec 28th, 2015
Lake Level went up 5.91 feet.
Cresting 12/30/2015 @585.84, up 7.84 feet from 12/27

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi575.33576.09581.55578.21586.10585.70577.60574.00570.41568.77576.94585.84586.10
Low571.82575.79576.07576.23578.11577.48574.16570.48568.83567.72568.11576.96567.72
Flux3.510.305.481.987.998.223.443.522.081.058.838.88Flux 18.42 YTD

Lake Ouachita Monthly High / Low For 2014

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi578.24577.12576.49578.28580.04579.40576.91575.63572.61570.26570.92571.72580.04
Low576.45576.14575.62576.32577.47577.09575.81572.72570.23570.10570.61570.58570.10
Flux1.790.800.871.962.572.311.102.912.38.16.311.14Flux 9.94 – YTD

Lake Ouachita Monthly High / Low For 2013

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi574.39576.67576.95579.39580.20586.96577.17575.26572.62570.13570.34577.60586.96
Low570.21574.47576.09577.27577.48577.29575.33572.87569.78569.53573.27573.30569.53
Flux.4.282.20.862.122.729.671.842.392.840.602.934.30Flux 17.43 – YTD

Lake Ouachita Monthly High / Low For 1982 – Highest Recorded Water Level to Date.

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Hi575.10577.70578.60578.30577.00577.90577.40576.40575.60573.90576.80590.10590.10
Low572.60576.00577.10576.90576.40576.60576.20575.70573.90572.60572.10576.60572.60
Avg.      576.55     Flux. 17.50

Lake Ouachita Monthly  High / Low For 1961

 JANFEBMARAPRMAYJUNJULYAUGSEPOCTNOVDECHigh / Low
For the Year
Low568.00567.20571.10576.50576.30577.20575.60572.40569.70566.50564.60566.80566.50
Hi570.20571.10577.90578.70578.90578.10577.20575.50572.20569.70567.10569.40578.10
Avg.569.21568.46574.02577.73577.56577.66576.35573.89571.02568.17565.73568.27Flux. 11.60

In the event the level rises above 592 feet above sea level there is a 200 foot wide spillway located one mile west of the dam which allows the runoff to flow to Lake Hamilton via Owl Creek.

This has never happened since the gates to the dam were closed in 1953.
During the record high level of December 1982 the water was only 9.6 inches short of going over the spillway.

The emergency spillway was constructed first starting in August of 1947 to redirect the river so construction of the earth-filled dam and intake structure could began. The two large tunnels ( Flood control power tunnels) along with the dam and intake structures followed. The dam was completed in 1952 was one year ahead of schedule.

The flood gates were closed in July of 1952 and Lake Ouachita began to fill with water.
The power plant was constructed once the lake level reached the working level of the intake towers and the first electrical power was generated on July 17, 1955.

Lake Ouachita Record High Stage
 590.10Date – December 5, 1982
Record Low Stage
 535.86 – lake was still filling.Date – January 9, 1954

Lake Ouachita 10 year Periods – High water Levels.

From Jan. 2011 thru December 2020 – June 3rd, 2013 – Crested @ 586.96
From Jan. 2001 thru December 2010 – May 16, 2009 – Crested @ 588.05
From Jan. 1991 thru December 2000 – May 26, 1990 – Crested @ 587.1
From Jan. 1981 thru December 1990 – Dec. 5, 1982 – Crested @ 590.1- Record High
From Jan. 1971 thru December 1980 – June 10, 1974 – Crested @ 584.6
From Jan. 1961 thru December 1970 – High was May 18, 1968 – Crested @ 588.5

 

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