Lk Mcclure A Exchequer CA — storage

Storage now, against this reservoir's own record

965.40 Mm³

Stored, September 2023

89th

Percentile among 90 Seps on record

+46.8%

Against the Sep 1991–2020 average

Storage in September 2023 was higher than most Seps on record, ranked against 90 other Seps held for this reservoir.

Storage, 1930–2023

Monthly mean storage

1,107 monthly values, 1930 to 2023

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
Period	Lk Mcclure A Exchequer CA (Mm³)
December 1930	7.95
January 1931	13.7
February 1931	27.5
March 1931	50.8
April 1931	58.4
May 1931	84.8
June 1931	56.2
July 1931	16.7
August 1931	5.75
January 1932	96.4
February 1932	184
March 1932	204
April 1932	234
May 1932	311
June 1932	346
July 1932	329
August 1932	241
September 1932	147
October 1932	87.3
November 1932	79.7
December 1932	81.2
January 1933	87.6
February 1933	77.8
March 1933	71.8
April 1933	89.9
May 1933	95.0
June 1933	239
July 1933	232
August 1933	125
September 1933	29.2
October 1933	6.05
November 1933	6.72
December 1933	15.8
January 1934	55.2
February 1934	81.6
March 1934	150
April 1934	173
May 1934	167
June 1934	139
July 1934	64.8
August 1934	15.0
November 1934	12.2
December 1934	35.2
January 1935	99.4
February 1935	162
March 1935	176
April 1935	270
May 1935	314
June 1935	338
July 1935	319
August 1935	230
September 1935	144
October 1935	84.5
November 1935	82.1
December 1935	88.2
January 1936	117
February 1936	247
March 1936	304
April 1936	306
May 1936	310
June 1936	343
July 1936	321
August 1936	228
September 1936	139
October 1936	80.2
November 1936	76.6
December 1936	84.8
January 1937	109
February 1937	245
March 1937	289
April 1937	296
May 1937	326
June 1937	340
July 1937	313
August 1937	208
September 1937	116
October 1937	63.6
November 1937	61.4
December 1937	165
January 1938	202
February 1938	288
March 1938	321
April 1938	283
May 1938	317
June 1938	353
July 1938	349
August 1938	305
September 1938	224
October 1938	182
November 1938	196
December 1938	213
January 1939	201
February 1939	178
March 1939	177
April 1939	278
May 1939	336
June 1939	310
July 1939	218
August 1939	109
September 1939	19.6
October 1939	14.3
November 1939	23.3
December 1939	28.1
January 1940	106
February 1940	204
March 1940	303
April 1940	304
May 1940	332
June 1940	349
July 1940	288
August 1940	180
September 1940	86.6
October 1940	25.2
November 1940	22.3
December 1940	45.0
January 1941	170
February 1941	241
March 1941	295
April 1941	292
May 1941	313
June 1941	348
July 1941	344
August 1941	279
September 1941	203
October 1941	148
November 1941	155
December 1941	202
January 1942	255
February 1942	295
March 1942	294
April 1942	293
May 1942	291
June 1942	334
July 1942	341
August 1942	267
September 1942	187
October 1942	129
November 1942	134
December 1942	177
January 1943	249
February 1943	302
March 1943	313
April 1943	289
May 1943	319
June 1943	349
July 1943	322
August 1943	240
September 1943	153
October 1943	84.4
November 1943	75.3
December 1943	82.2
January 1944	98.9
February 1944	132
March 1944	200
April 1944	198
May 1944	287
June 1944	349
July 1944	315
August 1944	214
September 1944	116
October 1944	38.7
November 1944	48.5
December 1944	82.1
January 1945	119
February 1945	284
March 1945	287
April 1945	306
May 1945	332
June 1945	349
July 1945	323
August 1945	225
September 1945	127
October 1945	60.9
November 1945	100
December 1945	163
January 1946	238
February 1946	201
March 1946	187
April 1946	256
May 1946	323
June 1946	345
July 1946	277
August 1946	165
September 1946	63.4
October 1946	18.0
November 1946	32.6
December 1946	89.7
January 1947	135
February 1947	170
March 1947	225
April 1947	263
May 1947	335
June 1947	327
July 1947	229
August 1947	112
October 1947	8.09
November 1947	19.2
December 1947	25.5
January 1948	35.9
February 1948	46.3
March 1948	65.6
April 1948	152
May 1948	272
June 1948	350
July 1948	306
August 1948	188
September 1948	80.0
October 1948	35.3
November 1948	37.3
December 1948	40.7
January 1949	49.8
February 1949	65.9
March 1949	124
April 1949	162
May 1949	290
June 1949	342
July 1949	258
August 1949	136
September 1949	36.1
October 1949	13.8
November 1949	15.4
December 1949	20.0
January 1950	38.1
February 1950	101
March 1950	113
April 1950	175
May 1950	294
June 1950	344
July 1950	271
August 1950	150
September 1950	43.6
October 1950	19.9
November 1950	136
December 1950	306
January 1951	302
February 1951	297
March 1951	294
April 1951	317
May 1951	351
June 1951	347
July 1951	288
August 1951	173
September 1951	65.4
October 1951	20.0
November 1951	22.3
December 1951	54.7
January 1952	143
February 1952	217
March 1952	246
April 1952	315
May 1952	324
June 1952	325
July 1952	338
August 1952	282
September 1952	183
October 1952	123
November 1952	123
December 1952	133
January 1953	120
February 1953	123
March 1953	135
April 1953	145
May 1953	232
June 1953	304
July 1953	307
August 1953	195
September 1953	85.5
October 1953	39.3
November 1953	41.1
December 1953	47.3
January 1954	56.0
February 1954	95.8
March 1954	175
April 1954	244
May 1954	344
June 1954	330
July 1954	242
August 1954	108
September 1954	15.4
October 1954	9.92
November 1954	9.15
December 1954	22.9
January 1955	49.6
February 1955	74.2
March 1955	106
April 1955	93.6
May 1955	182
June 1955	306
July 1955	251
August 1955	125
September 1955	16.4
October 1955	2.68
November 1955	2.64
December 1955	103
January 1956	284
February 1956	274
March 1956	271
April 1956	303
May 1956	340
June 1956	348
July 1956	343
August 1956	289
September 1956	199
October 1956	139
November 1956	143
December 1956	153
January 1957	164
February 1957	185
March 1957	244
April 1957	240
May 1957	293
June 1957	350
July 1957	294
August 1957	177
September 1957	70.3
October 1957	21.0
November 1957	26.7
December 1957	41.1
January 1958	66.6
February 1958	142
March 1958	232
April 1958	304
May 1958	310
June 1958	332
July 1958	340
August 1958	270
September 1958	184
October 1958	129
November 1958	126
December 1958	127
January 1959	139
February 1959	177
March 1959	231
April 1959	247
May 1959	315
June 1959	293
July 1959	185
August 1959	47.2
September 1959	12.2
October 1959	29.2
November 1959	31.2
December 1959	31.2
January 1960	33.9
February 1960	82.6
March 1960	124
April 1960	193
May 1960	269
June 1960	282
July 1960	171
August 1960	35.6
September 1960	4.33
October 1960	2.88
November 1960	5.21
December 1960	21.8
January 1961	29.5
February 1961	43.5
March 1961	66.9
April 1961	131
May 1961	129
June 1961	111
July 1961	27.1
August 1961	14.6
September 1961	6.92
October 1961	4.52
November 1961	3.08
December 1961	11.2
January 1962	18.5
February 1962	118
March 1962	182
April 1962	224
May 1962	329
June 1962	349
July 1962	310
August 1962	198
September 1962	90.9
October 1962	47.1
November 1962	49.5
December 1962	52.2
January 1963	57.0
February 1963	240
March 1963	243
April 1963	281
May 1963	328
June 1963	341
July 1963	327
August 1963	226
September 1963	121
October 1963	74.6
November 1963	93.6
December 1963	131
January 1964	150
February 1964	175
March 1964	195
April 1964	212
May 1964	223
June 1964	261
July 1964	178
August 1964	41.5
September 1964	1.40
October 1964	0.718
November 1964	1.77
December 1964	66.5
January 1965	312
February 1965	315
March 1965	237
April 1965	212
May 1965	254
June 1965	334
July 1965	332
August 1965	256
September 1965	166
October 1965	126
November 1965	147
December 1965	126
January 1966	152
February 1966	190
March 1966	233
April 1966	331
May 1966	441
June 1966	459
July 1966	370
August 1966	337
September 1966	330
October 1966	331
November 1966	333
December 1966	445
January 1967	500
February 1967	590
March 1967	703
April 1967	908
May 1967	958
June 1967	1,144
July 1967	1,178
August 1967	1,070
September 1967	937
October 1967	843
November 1967	807
December 1967	782
January 1968	761
February 1968	760
March 1968	796
April 1968	804
May 1968	825
June 1968	810
July 1968	698
August 1968	570
September 1968	473
October 1968	423
November 1968	415
December 1968	435
January 1969	594
February 1969	874
March 1969	823
April 1969	827
May 1969	996
June 1969	1,219
July 1969	1,257
August 1969	1,153
September 1969	988
October 1969	873
November 1969	783
December 1969	707
January 1970	740
February 1970	832
March 1970	854
April 1970	872
May 1970	923
June 1970	1,033
July 1970	977
August 1970	849
September 1970	736
October 1970	670
November 1970	666
December 1970	692
January 1971	698
February 1971	721
March 1971	721
April 1971	759
May 1971	847
June 1971	992
July 1971	988
August 1971	872
September 1971	770
October 1971	707
November 1971	695
December 1971	702
January 1972	712
February 1972	688
March 1972	697
April 1972	698
May 1972	762
June 1972	818
July 1972	718
August 1972	578
September 1972	438
October 1972	345
November 1972	339
December 1972	347
January 1973	391
February 1973	498
March 1973	626
April 1973	719
May 1973	899
June 1973	1,164
July 1973	1,117
August 1973	988
September 1973	871
October 1973	800
November 1973	800
December 1973	808
January 1974	808
February 1974	800
March 1974	865
April 1974	977
May 1974	1,105
June 1974	1,254
July 1974	1,196
August 1974	1,064
September 1974	939
October 1974	863
November 1974	825
December 1974	792
January 1975	776
February 1975	823
March 1975	887
April 1975	938
May 1975	992
June 1975	1,239
July 1975	1,221
August 1975	1,086
September 1975	942
October 1975	812
November 1975	800
December 1975	782
January 1976	760
February 1976	758
March 1976	757
April 1976	716
May 1976	711
June 1976	648
July 1976	527
August 1976	401
September 1976	321
October 1976	300
November 1976	289
December 1976	275
January 1977	265
February 1977	260
March 1977	257
April 1977	254
May 1977	254
June 1977	259
July 1977	212
August 1977	142
September 1977	119
October 1977	112
November 1977	101
December 1977	98.3
January 1978	190
February 1978	352
March 1978	542
April 1978	628
May 1978	793
June 1978	1,067
July 1978	1,190
August 1978	1,124
September 1978	1,005
October 1978	866
November 1978	747
December 1978	733
January 1979	777
February 1979	833
March 1979	855
April 1979	925
May 1979	1,066
June 1979	1,225
July 1979	1,146
August 1979	1,009
September 1979	882
October 1979	779
November 1979	758
December 1979	742
January 1980	840
February 1980	891
March 1980	906
April 1980	837
May 1980	917
June 1980	1,037
July 1980	1,155
August 1980	1,068
September 1980	920
October 1980	794
November 1980	757
December 1980	723
January 1981	703
February 1981	722
March 1981	750
April 1981	808
May 1981	878
June 1981	870
July 1981	742
August 1981	591
September 1981	470
October 1981	424
November 1981	443
December 1981	489
January 1982	635
February 1982	762
March 1982	878
April 1982	1,044
May 1982	1,114
June 1982	1,217
July 1982	1,239
August 1982	1,138
September 1982	998
October 1982	862
November 1982	802
December 1982	851
January 1983	830
February 1983	911
March 1983	990
April 1983	900
May 1983	817
June 1983	1,103
July 1983	1,236
August 1983	1,206
September 1983	1,049
October 1983	849
November 1983	788
December 1983	868
January 1984	860
February 1984	834
March 1984	858
April 1984	889
May 1984	981
June 1984	1,079
July 1984	998
August 1984	869
September 1984	751
October 1984	663
November 1984	649
December 1984	606
January 1985	560
February 1985	571
March 1985	582
April 1985	630
May 1985	705
June 1985	698
July 1985	576
August 1985	438
September 1985	342
October 1985	295
November 1985	292
December 1985	311
January 1986	344
February 1986	528
March 1986	906
April 1986	930
May 1986	952
June 1986	1,146
July 1986	1,131
August 1986	1,014
September 1986	900
October 1986	822
November 1986	795
December 1986	786
January 1987	776
February 1987	779
March 1987	800
April 1987	823
May 1987	839
June 1987	777
July 1987	654
August 1987	520
September 1987	419
October 1987	382
November 1987	382
December 1987	382
January 1988	392
February 1988	405
March 1988	417
April 1988	418
May 1988	462
June 1988	464
July 1988	387
August 1988	273
September 1988	192
October 1988	178
November 1988	168
December 1988	165
January 1989	164
February 1989	168
March 1989	226
April 1989	336
May 1989	414
June 1989	425
July 1989	352
August 1989	251
September 1989	179
October 1989	175
November 1989	179
December 1989	177
January 1990	173
February 1990	180
March 1990	207
April 1990	252
May 1990	307
June 1990	313
July 1990	257
August 1990	181
September 1990	137
October 1990	129
November 1990	116
December 1990	104
January 1991	89.6
February 1991	83.9
March 1991	127
April 1991	221
May 1991	307
June 1991	459
July 1991	448
August 1991	352
September 1991	268
October 1991	215
November 1991	201
December 1991	195
January 1992	188
February 1992	209
March 1992	264
April 1992	336
May 1992	425
June 1992	401
July 1992	339
August 1992	258
September 1992	185
October 1992	159
November 1992	140
December 1992	136
January 1993	258
February 1993	400
March 1993	532
April 1993	678
May 1993	861
June 1993	1,134
July 1993	1,211
August 1993	1,097
September 1993	970
October 1993	859
November 1993	807
December 1993	797
January 1994	789
February 1994	794
March 1994	798
April 1994	779
May 1994	807
June 1994	795
July 1994	665
August 1994	516
September 1994	413
October 1994	354
November 1994	331
December 1994	341
January 1995	454
February 1995	614
March 1995	823
April 1995	880
May 1995	942
June 1995	1,090
July 1995	1,247
August 1995	1,208
September 1995	1,081
October 1995	883
November 1995	802
December 1995	782
January 1996	798
February 1996	891
March 1996	888
April 1996	918
May 1996	1,083
June 1996	1,202
July 1996	1,151
August 1996	1,024
September 1996	909
October 1996	818
November 1996	790
December 1996	898
January 1997	1,160
February 1997	987
March 1997	792
April 1997	831
May 1997	983
June 1997	1,090
July 1997	1,025
August 1997	914
September 1997	822
October 1997	754
November 1997	722
December 1997	723
January 1998	767
February 1998	836
March 1998	802
April 1998	850
May 1998	891
June 1998	1,029
July 1998	1,241
August 1998	1,180
September 1998	1,033
October 1998	878
November 1998	831
December 1998	835
January 1999	829
February 1999	858
March 1999	857
April 1999	868
May 1999	938
June 1999	1,112
July 1999	1,078
August 1999	965
September 1999	874
October 1999	804
November 1999	767
December 1999	753
January 2000	754
February 2000	836
March 2000	879
April 2000	917
May 2000	1,049
June 2000	1,179
July 2000	1,107
August 2000	980
September 2000	883
October 2000	811
November 2000	761
December 2000	736
January 2001	726
February 2001	731
March 2001	783
April 2001	825
May 2001	921
June 2001	905
July 2001	782
August 2001	653
September 2001	568
October 2001	514
November 2001	459
December 2001	459
January 2002	507
February 2002	523
March 2002	557
April 2002	620
May 2002	677
June 2002	736
July 2002	642
August 2002	525
September 2002	441
October 2002	383
November 2002	365
December 2002	377
January 2003	413
February 2003	440
March 2003	462
April 2003	510
May 2003	582
June 2003	812
July 2003	764
August 2003	659
September 2003	578
October 2003	516
November 2003	479
December 2003	470
January 2004	493
February 2004	510
March 2004	598
April 2004	694
May 2004	713
June 2004	684
July 2004	580
August 2004	461
September 2004	375
October 2004	324
November 2004	330
December 2004	336
January 2005	501
February 2005	632
March 2005	771
April 2005	803
May 2005	902
June 2005	1,174
July 2005	1,216
August 2005	1,089
September 2005	956
October 2005	867
November 2005	829
December 2005	829
January 2006	842
February 2006	830
March 2006	843
April 2006	930
May 2006	1,052
June 2006	1,229
July 2006	1,225
August 2006	1,097
September 2006	962
October 2006	857
November 2006	801
December 2006	792
January 2007	789
February 2007	793
March 2007	810
April 2007	822
May 2007	823
June 2007	754
July 2007	625
August 2007	511
September 2007	430
October 2007	394
November 2007	344
December 2007	314
January 2008	315
February 2008	357
March 2008	406
April 2008	425
May 2008	497
June 2008	573
July 2008	520
August 2008	432
September 2008	366
October 2008	331
November 2008	320
December 2008	311
January 2009	319
February 2009	372
March 2009	455
April 2009	538
May 2009	739
June 2009	832
July 2009	767
August 2009	657
September 2009	568
October 2009	518
November 2009	503
December 2009	501
January 2010	520
February 2010	572
March 2010	663
April 2010	737
May 2010	869
June 2010	1,085
July 2010	1,146
August 2010	1,026
September 2010	891
October 2010	811
November 2010	806
December 2010	871
January 2011	987
February 2011	909
March 2011	869
April 2011	892
May 2011	902
June 2011	1,062
July 2011	1,229
August 2011	1,145
September 2011	999
October 2011	897
November 2011	839
December 2011	821
January 2012	811
February 2012	817
March 2012	807
April 2012	865
May 2012	968
June 2012	919
July 2012	801
August 2012	670
September 2012	576
October 2012	507
November 2012	464
December 2012	499
January 2013	542
February 2013	556
March 2013	568
April 2013	618
May 2013	699
June 2013	680
July 2013	589
August 2013	487
September 2013	412
October 2013	349
November 2013	309
December 2013	294
January 2014	277
February 2014	265
March 2014	280
April 2014	318
May 2014	370
June 2014	364
July 2014	297
August 2014	226
September 2014	171
October 2014	133
November 2014	102
December 2014	91.6
January 2015	83.8
February 2015	94.5
March 2015	110
April 2015	120
May 2015	143
June 2015	164
July 2015	142
August 2015	127
September 2015	112
October 2015	99.6
November 2015	83.5
December 2015	87.7
January 2016	135
February 2016	200
March 2016	335
April 2016	510
May 2016	664
June 2016	753
July 2016	693
August 2016	586
September 2016	507
October 2016	456
November 2016	478
December 2016	514
January 2017	795
February 2017	1,084
March 2017	973
April 2017	830
May 2017	896
June 2017	1,161
July 2017	1,222
August 2017	1,134
September 2017	1,010
October 2017	875
November 2017	816
December 2017	821
January 2018	827
February 2018	834
March 2018	903
April 2018	1,069
May 2018	1,152
June 2018	1,140
July 2018	1,035
August 2018	909
September 2018	807
October 2018	730
November 2018	693
December 2018	696
January 2019	722
February 2019	843
March 2019	852
April 2019	866
May 2019	1,064
June 2019	1,154
July 2019	1,226
August 2019	1,139
September 2019	983
October 2019	819
November 2019	766
December 2019	776
January 2020	782
February 2020	784
March 2020	776
April 2020	829
May 2020	950
June 2020	942
July 2020	804
August 2020	654
September 2020	573
October 2020	516
November 2020	483
December 2020	470
January 2021	461
February 2021	476
March 2021	480
April 2021	509
May 2021	553
June 2021	519
July 2021	435
August 2021	345
September 2021	282
October 2021	0
November 2021	0
December 2021	0
January 2022	0
February 2022	0
March 2022	0
April 2022	0
May 2022	0
June 2022	0
July 2022	0
August 2022	0
September 2022	0
October 2022	0
November 2022	0
December 2022	0
January 2023	0
February 2023	0
March 2023	0
April 2023	0
May 2023	0
June 2023	0
July 2023	0
August 2023	199
September 2023	965

The reservoir's year

Seasonal storage profile

Each calendar month's reference average, against the most recent year

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
Period	1991–2020 average (Mm³)	Most recent 12 months (Mm³)
Jan	582	0
Feb	622	0
Mar	653	0
Apr	703	0
May	796	0
Jun	887	0
Jul	861	0
Aug	756	199
Sep	657	965
Oct	581	0
Nov	547	0
Dec	551	0

Rate and persistence

22 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

Lk Mcclure A Exchequer CA

Gauge location

Where this comes from

1,107 monthly observations 1930–2023 Mm³

Spatially aggregatedHigh confidenceSeptember 2023

Source: USGS — National Water Information System, 11269500. 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.

Period	1991–2020 average (Mm³)	Most recent 12 months (Mm³)
Jan	582	0
Feb	622	0
Mar	653	0
Apr	703	0
May	796	0
Jun	887	0
Jul	861	0
Aug	756	199
Sep	657	965
Oct	581	0
Nov	547	0
Dec	551	0

Period	1991–2020 average (Mm³)	Most recent 12 months (Mm³)
Jan	582	0
Feb	622	0
Mar	653	0
Apr	703	0
May	796	0
Jun	887	0
Jul	861	0
Aug	756	199
Sep	657	965
Oct	581	0
Nov	547	0
Dec	551	0

Period	1991–2020 average (Mm³)	Most recent 12 months (Mm³)
Jan	582	0
Feb	622	0
Mar	653	0
Apr	703	0
May	796	0
Jun	887	0
Jul	861	0
Aug	756	199
Sep	657	965
Oct	581	0
Nov	547	0
Dec	551	0