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Department of Water and Environmental Regulation HYMONTH V128 Output 30/01/2023
Site 617165 Lennard Brook - Molecap Hill Site 617165
VarFrom 10.00 Stage - SL in Metres
VarTo 151.00 Total Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Mean Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Total Days Yr
1962 [ ] [ ] [15.60] 70.05& 230.2 & 412.3 # 570.4 # 493.7 " 416.5 " 398.0 # 263.9 &[140.9 ] [301.2 ][3012 ] 89 1962
1963 [45.02] 80.59& 88.88& 92.91& 264.3 & 820.9 " 857.1 "1003 " 756.7 " [ ] [224.7 ] 248.5 # [407.5 ][4483 ] 57 1963
1964 [117.9 ] [ ] [119.1 ] 299.5 # 239.1 # 489.9 #1085 "1143 " 784.4 " 692.1 " 474.9 " 386.9 # [530.2 ][5832 ] 50 1964
1965 279.9 # 271.3 # 329.1 # 351.5 # 461.3 " 550.2 " 990.2 " 881.4 " 699.2 " 842.3 " 593.1 " 440.0 # 557.5 # 6690 # 0 1965
1966 352.8 # 308.5 # 326.1 # 363.7 # 385.6 " 558.8 " 712.1 " 687.4 " 552.5 " 464.3 " 365.5 # 295.7 # 447.8 # 5373 # 0 1966
1967 273.5 # 237.9 # 258.6 # 325.0 # 602.3 " 755.5 "[889.3 ]1066 " 813.1 " 661.0 " 499.6 " 418.5 " [566.7 ][6800 ] 2 1967
1968 352.2 # 335.2 # 364.8 # 444.5 " 428.9 " 709.5 " 866.2 " 890.8 " 823.0 " 679.5 " 531.1 " 433.8 # 571.6 # 6860 # 0 1968
1969 388.2 # 331.3 " 345.1 # 396.0 " 459.1 " 531.7 " 559.7 " 526.1 " 444.7 " 360.7 # 343.0 # 260.4 & 412.2 & 4946 & 0 1969
1970 236.0 & 248.5 & 259.8 & 338.8 #[103.3 ] [18.28][380.7 ] 633.9 " 493.0 # 501.9 " 367.9 # 317.5 # [325.0 ][3900 ] 65 1970
1971 299.8 #[228.1 ] [52.04][194.0 ] [82.39][216.2 ] 504.2 " 548.0 "[391.9 ][404.7 ] 379.5 #[135.9 ] [286.4 ][3437 ] 112 1971
1972 [65.21] [ ] [ ] [92.11] 362.5 # 474.7 " 557.3 " 771.8 " 601.6 " 483.3 " 374.0 # 291.0 # [407.3 ][4073 ] 104 1972
1973 260.2 & [15.87] [91.95] 287.9 # 400.1 # 588.3 "[496.8 ] 740.2 " 707.9 " 552.5 " 421.5 # 332.5 # [408.0 ][4896 ] 54 1973
1974 272.3 # 251.3 # 281.3 # 534.7 & 707.7 " 827.0 "1092 "1107 " 795.3 " 737.4 " 593.1 " 473.9 " 639.4 & 7673 & 0 1974
1975 398.1 # 310.1 # 370.0 # 418.3 " 487.5 " 590.5 " 866.0 " 876.5 " 698.2 " 627.6 " 494.4 " 401.7 # 544.9 # 6539 # 0 1975
1976 339.4 #297.2 &[225.8 ]409.3 "[357.1 ]499.8 "515.1 "670.7 "608.0 "570.1 "455.3 "368.0 # [443.0 ][5316 ] 17 1976
1977 325.8 #255.1 &310.8 #320.2 #447.7 "494.5 "525.2 "672.2 "516.1 "490.1 "366.5 #316.5 # 420.1 &5041 & 0 1977
1978 281.3 &254.4 #292.4 #317.5 #430.9 #592.1 "802.0 "673.6 !665.9 "576.0 "432.5 "368.8 # 473.9 !5687 ! 0 1978
1979 316.9 #277.4 #327.5 #390.0 #446.2 "581.6 "657.3 "648.9 "553.8 "480.0 "430.3 "302.9 # 451.1 #5413 # 0 1979
1980 254.3 &262.7 &298.8 #376.3 &439.1 "497.7 "659.8 "654.2 "566.9 "497.4 "383.5 #302.4 & 432.8 &5193 & 0 1980
1981 234.9 & 236.6 & 281.9 & 326.5 #[416.6 ][870.3 ] 876.2 "1028 " 754.7 " 665.2 " 547.6 " 430.2 & [555.7 ][6668 ] 6 1981
1982 425.8 # 325.7 # 383.7 # 434.5 " 627.6 ! 700.9 ! 736.2 " 815.8 " 701.4 " 585.8 " 433.7 " 376.8 ! 545.7 ! 6548 ! 0 1982
1983 300.3 ! 312.7 ![121.9 ][232.2 ] 423.1 " 643.1 " 916.8 " 871.0 " 887.9 " 638.7 " 583.7 " 475.1 & [533.9 ][6406 ] 30 1983
1984 411.2 " 314.3 & 426.2 " 431.0 " 678.2 " 647.6 " 729.2 " 826.2 " 701.8 " 559.7 " 478.8 & 349.1 & 546.1 & 6553 & 0 1984
1985 283.5 & 240.4 & 299.2 & 364.7 & 420.2 & 496.8 " 657.2 " 708.2 " 609.2 " 476.3 " 312.5 & 282.9 & 429.3 & 5151 & 0 1985
1986 205.4 & 317.7 & 334.7 & 325.5 & 517.5 " 634.1 "1018 "1068 " 832.8 " 715.6 " 478.6 & 335.6 & 565.3 & 6784 & 0 1986
1987 297.5 & 240.5 & 335.5 & 426.7 & 640.5 " 723.7 " 857.8 " 941.5 " 732.5 " 582.3 " 466.4 " 374.9 & 551.6 & 6620 & 0 1987
1988 267.2 & 190.9 & 269.9 & 358.9 & 581.0 " 722.3 " 854.9 " 889.0 " 725.0 " 687.1 " 405.1 & 313.3 & 522.1 & 6265 & 0 1988
1989 257.5 & 237.6 & 268.1 & 369.3 & 572.1 " 660.9 " 822.1 " 800.3 " 681.1 " 649.5 " 328.8 & 253.0 & 491.7 & 5900 & 0 1989
1990 322.8 " 299.4 " 294.5 " 437.6 " 556.7 " 608.8 " 830.6 " 850.6 " 745.9 " 667.2 " 380.5 " 280.6 " 522.9 " 6275 " 0 1990
1991 242.5 " 206.1 " 255.5 " 319.5 " 480.4 " 914.3 "1049 "[662.6 ] 876.5 " 753.4 " 552.4 " 433.0 " [562.1 ][6745 ] 10 1991
1992 381.3 " 472.8 " 416.5 " 407.3 " 633.8 " 783.2 " 913.1 "1131 " 971.3 " 715.7 " 599.3 " 443.5 " 655.8 " 7869 " 0 1992
1993 319.6 " 268.0 " 332.9 " 389.7 " 906.9 ^ 770.5 " 846.0 " 957.7 " 874.4 " 778.1 " 499.6 " 298.3 " 603.5 ^ 7242 ^ 0 1993
1994 242.4 " 241.8 " 306.9 " 308.1 " 599.4 " 900.7 " 988.1 " 915.0 " 737.7 " 502.7 " 357.3 " 257.9 " 529.8 " 6358 " 0 1994
1995 200.6 " 234.4 " 243.9 " 329.7 " 617.3 " 870.7 "1205 "1053 " 820.0 " 631.4 " 499.4 " 333.8 " 586.7 " 7040 " 0 1995
1996 291.0 " 219.2 " 266.8 " 358.0 " 507.2 " 689.5 " 995.9 "1067 " 980.2 " 749.6 " 566.5 " 420.0 " 592.5 " 7111 " 0 1996
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
! ... Not reviewed / Quality not known
" ... Relative Uncertainty +/-10%
# ... Relative Uncertainty +/-15%
& ... Relative Uncertainty +/-30%
[ ... Not Available
^ ... Relative Uncertainty +/-50%
Department of Water and Environmental Regulation HYMONTH V128 Output 30/01/2023
Site 617165 Lennard Brook - Molecap Hill Site 617165
VarFrom 10.00 Stage - SL in Metres
VarTo 151.00 Total Stream Discharge Volume in Megalitres
Figures are for period ending 24:00
Mean Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Total Days Yr
1997 287.2 " 305.0 " 373.7 " 591.3 " 651.9 " 731.9 " 765.5 " 901.6 " 831.1 " 652.5 " 459.3 " 384.7 " 578.0 " 6936 " 0 1997
1998 313.9 " 264.6 " 357.7 " 399.2 " 562.0 " 796.1 " 905.8 " 855.6 " 858.6 " 679.3 " 495.9 " 412.8 " 575.1 " 6901 " 0 1998
1999 500.7 " 345.1 " 445.5 " 422.5 " 673.3 " 854.2 " 980.2 " 973.7 " 997.8 " 999.5 " 616.5 " 521.4 " 694.2 " 8330 " 0 1999
2000 546.2 " 404.1 " 432.9 " 508.7 " 646.0 " 725.1 "1076 " 983.5 " 845.9 " 656.9 " 520.2 " 417.2 " 646.9 " 7763 " 0 2000
2001 382.8 "340.1 "400.0 "447.3 "658.4 "635.2 "751.8 "887.4 "798.3 "748.4 "[78.23 ] [ ] [557.1 ][6128 ] 57 2001
2002 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2002
2003 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2003
2004 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 2004
2005 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2005
2006 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2006
2007 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2007
2008 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [206.4 ]473.7 "390.9 " [357.0 ][1071 ] 294 2008
2009 283.6 "247.5 "305.9 "336.6 "401.6 "538.0 "757.0 "811.3 "725.6 "603.2 "474.7 "360.5 " 487.1 "5846 " 0 2009
2010 287.9 "243.4 "287.8 "362.6 "459.6 "492.7 "578.2 "555.8 "481.2 "401.7 "299.6 "275.3 " 393.8 "4726 " 0 2010
2011 213.3 "187.9 "210.4 "256.4 "363.5 "481.4 "591.4 "725.9 "637.2 "564.0 "437.5 "414.4 " 423.6 "5083 " 0 2011
2012 269.4 "271.0 "241.0 "308.6 "389.7 "460.6 "451.5 "499.5 "453.5 "370.8 "340.4 "279.2 " 361.3 "4335 " 0 2012
2013 212.2 "156.5 "259.9 "286.3 "401.3 "381.7 "458.3 "658.8 "742.0 "557.8 "350.8 "261.0 " 393.9 "4727 " 0 2013
2014 202.2 "174.3 "201.9 "246.6 "450.1 "512.5 "701.1 "619.4 "597.4 "517.7 "398.4 "309.0 " 410.9 "4931 " 0 2014
2015 215.0 "221.2 "272.8 "315.3 "401.4 "441.0 "509.5 "636.1 "503.0 "369.7 "282.2 "235.2 " 366.9 "4402 " 0 2015
2016 195.0 " 192.1 " 300.2 " 388.6 " 460.0 " 525.1 " 713.6 " 711.0 " 634.0 " 539.2 " 385.6 " 299.2 " 445.3 " 5344 " 0 2016
2017 254.3 " 454.4 " 362.8 " 340.7 " 416.1 " 414.8 " 615.9 " 880.5 " 646.9 " 536.2 " 379.7 " 339.9 " 470.2 " 5642 " 0 2017
2018 343.6 " 265.7 " 296.4 " 340.4 " 409.1 " 571.1 " 763.1 "1048 " 777.8 " 649.7 " 494.9 " 412.6 " 531.0 " 6372 " 0 2018
2019 339.9 " 266.4 " 318.1 " 370.6 " 429.6 " 628.4 " 757.1 " 676.3 " 613.5 " 501.5 " 385.7 " 279.4 " 463.9 " 5566 " 0 2019
2020 265.9 " 236.6 " 268.0 " 292.8 " 399.3 " 480.7 " 556.9 " 645.6 " 520.7 " 434.4 " 410.3 " 271.0 " 398.5 " 4782 " 0 2020
2021 202.6 " 230.3 " 296.6 " 302.8 " 447.4 " 534.2 "1059 " 928.2 " 700.7 " 652.0 " 500.7 " 352.1 " 517.2 " 6207 " 0 2021
2022 261.3 " 211.6 " 297.3 " 380.7 " 517.2 " 563.9 " 643.0 "1082 " 755.9 " 606.3 " 486.8 " 355.9 " 513.5 " 6162 " 0 2022
2023 [253.6 ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [253.6 ] [253.6 ] 337 2023
Mean [284.7 ][261.6 ][285.4 ][347.0 ][475.0 ][604.0 ][768.9 ][821.4 ][697.1 ][585.6 ][431.9 ][341.9 ] [486.8 ][5682 ] Mean
Med. [280.6 ][254.4 ][296.6 ][354.7 ][448.9 ][589.4 ][760.1 ][838.4 ][704.8 ][584.1 ][433.7 ][337.7 ] Med.
Max [546.2 ][472.8 ][445.5 ][591.3 ][906.9 ][914.3 ][1205 ][1143 ][997.8 ][999.5 ][616.5 ][521.4 ] [694.2 ][8330 ] Max
Min [45.02 ][15.87 ][15.60 ][70.05 ][82.39 ][18.28 ][380.7 ][493.7 ][391.9 ][206.4 ][78.23 ][135.9 ] [253.6 ][253.6 ] Min
Total[15373 ][13341 ][15125 ][18739 ][25651 ][32615 ][41518 ][44353 ][37643 ][31625 ][23756 ][18465 ] [27260 ][318203 ] 3475 Total
OK 97% 98% 94% 97% 97% 97% 99% 99% 100% 98% 98% 99% 98% 98% OK
Cnt 54 51 53 54 54 54 54 54 54 54 55 54 56 56 Cnt
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
! ... Not reviewed / Quality not known
" ... Relative Uncertainty +/-10%
# ... Relative Uncertainty +/-15%
& ... Relative Uncertainty +/-30%
[ ... Not Available
^ ... Relative Uncertainty +/-50%