HydrionisGlobal Water Intelligence
Monitored reservoir

Lake O' The Cherokees At Langley, OK

United States Geological Survey reservoir gauge 07190000 in OK, with published storage from 1940.

Storage record07190000

Storage now, against this reservoir's own record

1,700.30 Mm³
Stored, August 2026
14th
Percentile among 85 Augs on record
-12.9%
Against the Aug 1991–2020 average
+1.1%
Change over the 12 months to 2026-08

Storage in August 2026 was lower than most Augs on record, ranked against 85 other Augs held for this reservoir.

Storage, 1940–2026

Monthly mean storage
1,013 monthly values, 1940 to 2026
Monthly mean storageMonthly mean storage: Lake O' The Cherokees At Langley, OK in Mm³, from 1940.25 to 2026.5833333333333.01,0002,0003,000Mm³1940.251952.83333333333331963.416666666666719741984.58333333333331995.16666666666672005.752016.3333333333333Year

Monthly means of the publisher's daily record. Volume, not percentage of capacity: without a capacity whose definition is stated, fullness cannot be computed.

View the data behind this chart
Underlying data
PeriodLake O' The Cherokees At Langley, OK (Mm³)
April 194099.7
May 1940424
June 1940598
July 1940708
August 1940829
September 1940988
October 19422,185
November 19422,215
December 19422,133
January 19432,227
February 19432,161
March 19432,068
April 19432,124
May 19432,223
June 19432,087
July 19432,031
August 19431,861
September 19431,755
October 19431,750
November 19431,594
December 19431,511
January 19441,459
February 19441,457
March 19441,787
April 19442,152
May 19442,080
June 19442,047
July 19441,943
August 19441,816
September 19441,917
October 19442,017
November 19441,805
December 19441,983
January 19451,911
February 19451,762
March 19452,126
April 19452,300
May 19452,120
June 19452,112
July 19452,084
August 19452,001
September 19451,953
October 19452,186
November 19452,068
December 19452,037
January 19462,090
February 19462,054
March 19462,063
April 19462,015
May 19462,065
June 19462,066
July 19461,956
August 19461,788
September 19461,655
October 19461,511
November 19461,673
December 19461,824
January 19471,885
February 19471,818
March 19471,888
April 19472,158
May 19472,090
June 19472,067
July 19472,026
August 19471,888
September 19471,736
October 19471,588
November 19471,448
December 19471,397
January 19481,354
February 19481,261
March 19481,511
April 19481,734
May 19481,846
June 19482,048
July 19482,105
August 19482,100
September 19482,007
October 19481,835
November 19481,738
December 19481,568
January 19491,687
February 19492,176
March 19492,075
April 19492,070
May 19492,165
June 19492,074
July 19492,031
August 19491,836
September 19491,747
October 19491,725
November 19491,674
December 19491,535
January 19501,847
February 19501,965
March 19501,840
April 19501,724
May 19501,928
June 19502,084
July 19502,232
August 19502,186
September 19502,103
October 19501,995
November 19501,836
December 19501,690
January 19511,571
February 19511,670
March 19512,070
April 19512,047
May 19512,079
June 19512,133
July 19512,413
August 19511,999
September 19512,085
October 19512,044
November 19512,090
December 19512,021
January 19521,975
February 19522,054
March 19522,063
April 19522,068
May 19521,987
June 19521,868
July 19521,675
August 19521,565
September 19521,524
October 19521,370
November 19521,235
December 19521,151
January 19531,083
February 19531,019
March 19531,075
April 19531,146
May 19531,189
June 19531,072
July 19531,010
August 1953944
September 1953928
October 1953938
November 1953938
December 1953919
January 1954889
February 1954896
March 1954875
April 1954870
May 19541,175
June 19541,097
July 1954919
August 1954846
September 1954803
October 19541,030
November 19541,275
December 19541,215
January 19551,277
February 19551,282
March 19551,505
April 19551,673
May 19551,695
June 19551,926
July 19551,963
August 19551,797
September 19551,679
October 19551,727
November 19551,609
December 19551,480
January 19561,386
February 19561,385
March 19561,356
April 19561,338
May 19561,422
June 19561,528
July 19561,511
August 19561,440
September 19561,375
October 19561,334
November 19561,341
December 19561,345
January 19571,347
February 19571,345
March 19571,371
April 19571,914
May 19572,226
June 19572,460
July 19572,082
August 19571,810
September 19571,675
October 19571,593
November 19571,591
December 19571,567
January 19581,557
February 19581,540
March 19581,854
April 19581,994
May 19582,004
June 19581,977
July 19582,111
August 19581,911
September 19581,696
October 19581,580
November 19581,567
December 19581,515
January 19591,514
February 19591,581
March 19591,651
April 19591,761
May 19591,966
June 19592,007
July 19592,036
August 19591,849
September 19591,649
October 19592,350
November 19591,867
December 19591,565
January 19601,578
February 19601,567
March 19601,647
April 19601,900
May 19602,029
June 19602,011
July 19601,965
August 19601,874
September 19601,659
October 19601,577
November 19601,575
December 19601,559
January 19611,532
February 19611,551
March 19611,592
April 19611,820
May 19612,375
June 19612,038
July 19611,978
August 19611,831
September 19611,977
October 19611,851
November 19612,045
December 19611,849
January 19621,586
February 19621,700
March 19621,623
April 19621,783
May 19621,952
June 19622,047
July 19621,983
August 19621,823
September 19621,820
October 19621,975
November 19621,578
December 19621,515
January 19631,518
February 19631,527
March 19631,593
April 19631,651
May 19631,707
June 19631,783
July 19631,768
August 19631,640
September 19631,457
October 19631,365
November 19631,358
December 19631,368
January 19641,371
February 19641,375
March 19641,371
April 19641,627
May 19641,854
June 19642,067
July 19641,982
August 19641,812
September 19641,675
October 19641,549
November 19641,529
December 19641,542
January 19651,557
February 19651,574
March 19651,605
April 19652,082
May 19651,975
June 19652,066
July 19652,000
August 19651,818
September 19651,747
October 19651,657
November 19651,557
December 19651,535
January 19661,544
February 19661,555
March 19661,589
April 19661,723
May 19661,965
June 19661,997
July 19661,892
August 19661,767
September 19661,641
October 19661,527
November 19661,491
December 19661,457
January 19671,437
February 19671,474
March 19671,494
April 19671,609
May 19671,838
June 19672,023
July 19672,091
August 19671,848
September 19671,700
October 19671,662
November 19671,795
December 19671,679
January 19681,612
February 19681,929
March 19681,861
April 19681,920
May 19681,978
June 19682,062
July 19682,008
August 19681,858
September 19681,695
October 19681,650
November 19681,854
December 19681,866
January 19691,809
February 19691,784
March 19691,750
April 19692,078
May 19692,037
June 19692,092
July 19692,036
August 19691,844
September 19691,721
October 19691,775
November 19691,794
December 19691,604
January 19701,566
February 19701,582
March 19701,650
April 19701,902
May 19702,226
June 19702,098
July 19702,005
August 19701,840
September 19701,793
October 19701,819
November 19701,845
December 19701,842
January 19711,865
February 19711,772
March 19711,750
April 19711,803
May 19711,945
June 19712,045
July 19712,024
August 19711,886
September 19711,777
October 19711,799
November 19711,811
December 19711,975
January 19721,858
February 19721,750
March 19721,709
April 19721,728
May 19721,945
June 19721,978
July 19721,994
August 19721,863
September 19721,796
October 19721,841
November 19722,129
December 19721,900
January 19732,051
February 19732,059
March 19732,288
April 19732,541
May 19732,329
June 19732,110
July 19731,995
August 19731,841
September 19731,806
October 19732,130
November 19732,149
December 19732,328
January 19741,993
February 19741,889
March 19742,152
April 19741,912
May 19741,948
June 19742,201
July 19741,959
August 19741,839
September 19741,893
October 19741,872
November 19742,399
December 19742,054
January 19751,775
February 19752,120
March 19752,208
April 19752,064
May 19751,955
June 19752,084
July 19751,991
August 19751,845
September 19751,768
October 19751,606
November 19751,549
December 19751,670
January 19761,579
February 19761,550
March 19761,604
April 19761,757
May 19761,981
June 19762,050
July 19762,143
August 19761,848
September 19761,691
October 19761,564
November 19761,549
December 19761,505
January 19771,461
February 19771,482
March 19771,567
April 19771,687
May 19771,883
June 19772,085
July 19772,058
August 19771,859
September 19771,828
October 19771,883
November 19772,036
December 19771,816
January 19781,794
February 19781,795
March 19782,039
April 19782,145
May 19782,011
June 19782,032
July 19781,992
August 19781,834
September 19781,655
October 19781,544
November 19781,514
December 19781,551
January 19791,596
February 19791,812
March 19791,911
April 19791,862
May 19791,985
June 19792,070
July 19792,054
August 19791,877
September 19791,686
October 19791,584
November 19791,769
December 19791,743
January 19801,617
February 19801,636
March 19801,625
April 19801,982
May 19801,960
June 19801,997
July 19801,875
August 19801,698
September 19801,564
October 19801,533
November 19801,567
December 19801,592
January 19811,611
February 19811,618
March 19811,651
April 19811,652
May 19811,737
June 19811,927
July 19812,040
August 19811,919
September 19811,883
October 19811,838
November 19811,996
December 19811,943
January 19821,888
February 19822,063
March 19821,978
April 19821,866
May 19821,883
June 19822,262
July 19822,014
August 19821,849
September 19821,768
October 19821,747
November 19821,697
December 19821,918
January 19831,937
February 19831,989
March 19831,891
April 19832,200
May 19832,179
June 19832,065
July 19831,973
August 19831,754
September 19831,659
October 19831,748
November 19831,954
December 19831,909
January 19841,860
February 19841,921
March 19842,182
April 19842,198
May 19842,067
June 19842,039
July 19842,024
August 19841,979
September 19841,899
October 19841,902
November 19841,924
December 19842,046
January 19852,124
February 19852,054
March 19852,308
April 19852,091
May 19852,106
June 19852,152
July 19852,027
August 19851,993
September 19852,006
October 19851,995
November 19852,318
December 19852,139
January 19861,904
February 19861,917
March 19861,854
April 19862,064
May 19861,914
June 19861,894
July 19861,921
August 19861,926
September 19861,928
October 19862,387
November 19862,099
December 19861,958
January 19871,850
February 19872,053
March 19872,199
April 19872,028
May 19871,864
June 19871,987
July 19871,905
August 19871,900
September 19871,840
October 19871,792
November 19871,869
December 19872,120
January 19882,039
February 19881,848
March 19882,033
April 19882,183
May 19881,935
June 19881,920
July 19881,932
August 19881,893
September 19881,880
October 19881,862
November 19881,807
December 19881,806
January 19891,838
February 19891,927
March 19891,958
April 19891,897
May 19891,917
June 19891,994
July 19892,011
August 19891,998
September 19892,001
October 19891,894
November 19891,925
December 19891,844
January 19901,920
February 19902,042
March 19902,342
April 19902,186
May 19902,328
June 19902,237
July 19902,059
August 19901,982
September 19901,879
October 19901,880
November 19901,886
December 19901,913
January 19912,010
February 19911,888
March 19911,851
April 19911,889
May 19911,910
June 19911,953
July 19911,934
August 19911,877
September 19911,873
October 19911,843
November 19911,810
December 19911,894
January 19921,861
February 19921,876
March 19921,878
April 19921,878
May 19921,991
June 19922,103
July 19922,168
August 19922,092
September 19922,035
October 19921,982
November 19922,103
December 19922,342
January 19932,163
February 19932,073
March 19932,102
April 19932,102
May 19932,388
June 19932,274
July 19932,137
August 19932,072
September 19932,078
October 19932,055
November 19931,971
December 19931,914
January 19941,902
February 19941,929
March 19941,977
April 19942,137
May 19942,110
June 19942,064
July 19941,988
August 19941,863
September 19941,841
October 19941,857
November 19942,081
December 19941,922
January 19951,917
February 19951,897
March 19951,896
April 19951,971
May 19952,241
June 19952,488
July 19952,150
August 19951,885
September 19951,843
October 19951,845
November 19951,859
December 19951,875
January 19961,899
February 19961,894
March 19961,895
April 19961,917
May 19962,019
June 19962,063
July 19961,989
August 19961,864
September 19961,859
October 19961,947
November 19962,107
December 19962,004
January 19971,896
February 19971,983
March 19972,094
April 19972,081
May 19972,019
June 19972,046
July 19972,062
August 19971,938
September 19971,839
October 19971,864
November 19971,913
December 19971,977
January 19982,148
February 19981,918
March 19982,161
April 19982,154
May 19982,063
June 19982,009
July 19982,016
August 19981,948
September 19981,931
October 19982,134
November 19982,118
December 19982,039
January 19991,928
February 19992,037
March 19992,041
April 19992,093
May 19992,378
June 19992,192
July 19992,183
August 19991,929
September 19991,849
October 19991,854
November 19991,873
December 19991,968
January 20001,914
February 20001,902
March 20001,930
April 20001,897
May 20002,028
June 20002,113
July 20002,056
August 20001,881
September 20001,826
October 20001,829
November 20001,855
December 20001,890
January 20011,918
February 20012,152
March 20012,131
April 20011,911
May 20011,973
June 20012,061
July 20012,030
August 20011,950
September 20011,868
October 20011,922
November 20011,894
December 20011,927
January 20021,895
February 20021,956
March 20021,912
April 20021,912
May 20022,113
June 20022,161
July 20022,008
August 20021,851
September 20021,835
October 20021,832
November 20021,842
December 20021,851
January 20031,859
February 20031,856
March 20031,926
April 20031,920
May 20032,012
June 20032,047
July 20032,018
August 20031,851
September 20031,859
October 20031,883
November 20031,892
December 20031,933
January 20042,024
February 20041,967
March 20042,095
April 20041,996
May 20042,037
June 20042,014
July 20042,097
August 20041,984
September 20041,898
October 20041,889
November 20041,999
December 20042,012
January 20052,091
February 20051,951
March 20051,918
April 20051,913
May 20051,967
June 20052,052
July 20052,070
August 20051,903
September 20051,871
October 20051,830
November 20051,830
December 20051,834
January 20061,846
February 20061,884
March 20061,898
April 20061,901
May 20062,047
June 20062,022
July 20061,994
August 20061,882
September 20061,863
October 20061,852
November 20061,828
December 20061,878
January 20071,912
February 20071,901
March 20071,924
April 20071,977
May 20072,094
June 20072,143
July 20072,424
August 20072,065
September 20071,903
October 20071,871
November 20071,897
December 20071,903
January 20081,912
February 20081,974
March 20082,173
April 20082,343
May 20082,185
June 20082,342
July 20082,152
August 20081,964
September 20081,991
October 20081,900
November 20081,898
December 20081,903
January 20091,897
February 20091,929
March 20091,908
April 20092,070
May 20092,270
June 20092,076
July 20092,011
August 20091,968
September 20092,013
October 20092,068
November 20092,030
December 20091,902
January 20101,963
February 20101,939
March 20101,951
April 20101,946
May 20102,024
June 20102,041
July 20102,035
August 20101,939
September 20101,857
October 20101,848
November 20101,888
December 20101,897
January 20111,897
February 20111,918
March 20111,981
April 20111,985
May 20112,102
June 20112,022
July 20112,007
August 20111,934
September 20111,842
October 20111,847
November 20111,888
December 20111,900
January 20121,898
February 20121,897
March 20122,015
April 20122,021
May 20122,011
June 20122,005
July 20121,989
August 20121,937
September 20121,899
October 20121,862
November 20121,894
December 20121,898
January 20131,897
February 20131,899
March 20131,898
April 20131,982
May 20132,045
June 20132,073
July 20132,010
August 20132,089
September 20131,903
October 20131,849
November 20131,905
December 20131,897
January 20141,899
February 20141,897
March 20141,897
April 20141,897
May 20141,951
June 20142,033
July 20142,007
August 20141,930
September 20141,841
October 20141,931
November 20141,896
December 20141,896
January 20151,897
February 20151,898
March 20151,899
April 20151,921
May 20152,123
June 20152,439
July 20152,170
August 20151,964
September 20151,930
October 20151,893
November 20151,936
December 20152,134
January 20162,086
February 20161,897
March 20161,897
April 20161,902
May 20162,026
June 20162,022
July 20162,024
August 20161,961
September 20161,975
October 20161,964
November 20161,896
December 20161,897
January 20171,902
February 20171,896
March 20171,898
April 20172,062
May 20172,502
June 20172,093
July 20172,005
August 20171,979
September 20171,935
October 20171,901
November 20171,897
December 20171,898
January 20181,899
February 20181,960
March 20181,948
April 20181,905
May 20181,964
June 20182,006
July 20182,005
August 20181,965
September 20181,945
October 20181,961
November 20181,897
December 20181,900
January 20192,045
February 20191,917
March 20191,977
April 20191,903
May 20192,427
June 20192,637
July 20192,323
August 20192,108
September 20192,047
October 20192,058
November 20191,997
December 20191,921
January 20202,035
February 20201,993
March 20202,110
April 20202,031
May 20202,130
June 20202,030
July 20202,007
August 20201,962
September 20201,935
October 20201,898
November 20201,900
December 20201,890
January 20211,662
February 20211,661
March 20211,738
April 20211,647
May 20211,718
June 20211,782
July 20211,768
August 20211,675
September 20211,666
October 20211,671
November 20211,670
December 20211,668
January 20221,625
February 20221,619
March 20221,650
April 20221,674
May 20221,921
June 20221,764
July 20221,733
August 20221,679
September 20221,651
October 20221,613
November 20221,620
December 20221,631
January 20231,627
February 20231,630
March 20231,678
April 20231,666
May 20231,676
June 20231,720
July 20231,722
August 20231,691
September 20231,656
October 20231,644
November 20231,644
December 20231,645
January 20241,651
February 20241,626
March 20241,619
April 20241,638
May 20241,814
June 20241,760
July 20241,728
August 20241,680
September 20241,648
October 20241,604
November 20241,631
December 20241,620
January 20251,626
February 20251,620
March 20251,677
April 20251,752
May 20251,747
June 20252,084
July 20251,864
August 20251,682
September 20251,658
October 20251,624
November 20251,620
December 20251,622
January 20261,619
February 20261,616
March 20261,647
April 20261,722
May 20261,711
June 20261,873
July 20261,805
August 20261,700

The reservoir's year

Seasonal storage profile
Each calendar month's reference average, against the most recent year
Seasonal storage profileSeasonal storage profile: 1991–2020 average, Most recent 12 months in Mm³, from 1 to 12.01,0002,000Mm³123456789101112Month1991–2020 average 1: 1,947 Mm³1991–2020 average 2: 1,936 Mm³1991–2020 average 3: 1,973 Mm³1991–2020 average 4: 1,987 Mm³1991–2020 average 5: 2,105 Mm³1991–2020 average 6: 2,121 Mm³1991–2020 average 7: 2,069 Mm³1991–2020 average 8: 1,951 Mm³1991–2020 average 9: 1,906 Mm³1991–2020 average 10: 1,909 Mm³1991–2020 average 11: 1,926 Mm³1991–2020 average 12: 1,936 Mm³Most recent 12 months 1: 1,619 Mm³Most recent 12 months 2: 1,616 Mm³Most recent 12 months 3: 1,647 Mm³Most recent 12 months 4: 1,722 Mm³Most recent 12 months 5: 1,711 Mm³Most recent 12 months 6: 1,873 Mm³Most recent 12 months 7: 1,805 Mm³Most recent 12 months 8: 1,700 Mm³Most recent 12 months 9: 1,658 Mm³Most recent 12 months 10: 1,624 Mm³Most recent 12 months 11: 1,620 Mm³Most recent 12 months 12: 1,622 Mm³
  • 1991–2020 average
  • Most recent 12 months

Twelve separate averages, one per calendar month. A January average describes Januaries only. Months are plotted 1–12.

View the data behind this chart
Underlying data
Period1991–2020 average (Mm³)Most recent 12 months (Mm³)
Jan1,9471,619
Feb1,9361,616
Mar1,9731,647
Apr1,9871,722
May2,1051,711
Jun2,1211,873
Jul2,0691,805
Aug1,9511,700
Sep1,9061,658
Oct1,9091,624
Nov1,9261,620
Dec1,9361,622

Rate and persistence

+1.55 Mm³
Mean change per month over 12 months
11 of 24
Months in the last two years below the 20th percentile for their own month

Rates are computed only across an unbroken run of months, so a rate is never divided by a period in which some of the change was not observed. Percentile counts compare each month with the same calendar month in every other year held.

Location

Lake O' The Cherokees At Langley, OK
Gauge location
Lake O' The Cherokees At Langley, OKLake O' The Cherokees At Langley, OK — 1,700.30 Mm³Lake O' The Cherokees At Langley, OK — 1,700.30 Mm³

Where this comes from

1,013 monthly observations 1940–2026 Mm³
Spatially aggregatedHigh confidenceAugust 2026

Source: USGS — National Water Information System, 07190000. Licence: Open.

Method: Monthly mean of daily reservoir storage published by the USGS in acre-feet and converted to millions of cubic metres. Months with fewer than 20 days of record are not published rather than averaged from a partial month.

Reservoir storage is managed as well as observed: a drawdown may reflect an operating rule, flood-control rule curve or scheduled release rather than a shortage. Compare a month against the same month in other years, and do not read a fall as a supply signal without knowing the operating regime.

Retrieved 25 August 2026.

Monthly mean of daily reservoir storage published by the USGS in acre-feet and converted to millions of cubic metres. Months with fewer than 20 days of record are not published rather than averaged from a partial month.

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