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Department of Water and Environmental Regulation HYMONTH V128 Output 14/05/2026
Site 701009 Irwin River - Mountain Bridge Site 701009
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
1982 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [117.4] [117.4] [117.4] 342 1982
1983 103.8" 130.8" 127.3" 189.6" 246.0" 3440 " 5743 " 3291 " 2096 " 251.3" 255.2" 465.8" 1362 " 16340 " 0 1983
1984 527.8" 143.8" 1772 " 2985 #27045 # 1952 " 1818 " 1113 " 637.2" 302.8" 256.7" 212.4" 3230 # 38766 # 0 1984
1985 174.6" 476.6" 248.3" 216.0" 590.8" 1098 " 644.6" 569.3" 368.7" 258.3" 207.2" 204.2" 421.3" 5056 " 0 1985
1986 185.5" 416.5" 592.8" 221.5" 4853 #15152 "21441 " 9508 " 640.6" 466.7" 285.3" 251.6" 4501 # 54015 # 0 1986
1987 230.3" 178.6" 245.9" 306.7" 630.0" 1269 " 1081 " 703.8" 385.9" 375.5" 295.6" 265.5" 497.3" 5967 " 0 1987
1988 228.6" 874.8" 242.6" 2148 "55732 $ 4657 "10377 " 4820 " 607.3" 451.1" 306.3" 258.9" 6725 $ 80704 $ 0 1988
1989 232.9" 276.1" 486.4" 307.6" 2533 "22084 $ 2727 " 628.1" 437.7" 383.6" 271.1" 261.4" 2552 $ 30630 $ 0 1989
1990 5361 " 615.4" 282.6" 375.2" [394.8] [ ] [292.2] 1208 " 445.9" 4231 " 291.7" 271.7" [1252 ][13770 ] 59 1990
1991 240.7" 216.8" 256.8" 436.7" 394.4" 2891 " 3642 " 1039 " 494.1" 367.0" 370.1" 365.5" 892.7" 10713 " 0 1991
1992 259.4" 382.0" 3747 "15176 " 1042 " 1968 " 992.5"15623 "10959 " 679.8" 315.9" 251.6" 4283 " 51394 " 0 1992
1993 219.4" 197.7" 262.8" 294.4" 7311 " 2916 " 1387 " 3761 " 701.7" 351.4" 301.0" 216.1" 1493 " 17919 " 0 1993
1994 208.4" 775.0" 1315 " 266.2" 977.8" 765.8" 1128 " 2151 " 440.8" 318.4" 252.2" 239.5" 736.5" 8838 " 0 1994
1995 924.8" 391.5" 251.8" 345.4" 446.2" 1056 " 9674 " 1183 " 467.8" 369.2" 285.0" 249.5" 1304 " 15643 " 0 1995
1996 224" 1339" 264" 343" 347" 3598" 51499$ 28968" 2012" 510" 344" 267" 7476$ 89716$ 0 1996
1997 222" 285" 267" 3895" 510" 645" 918" 3304" 1767" 384" 377" 253" 1069" 12827" 0 1997
1998 237" 219" 265" 306" 6674" 7346" 34490$ 18146$ 704" 430" 290" 332" 5787$ 69440$ 0 1998
1999 271" 231" 4784" 2306" 135693$ 12309" 10484" 3161" 3105" 940" 550" 439" 14523$ 174276$ 0 1999
2000 590" 993" 7240" 767" 558" 573" 1016" 862" 830" 462" 367" 322" 1215" 14578" 0 2000
2001 346.8 " 318.8 " 348.8 " 406.4 " 638.9 " 630.2 "1246 "1201 " 607.5 " 625.4 $ 400.6 $ 335.1 $ 592.1 $ 7105 $ 0 2001
2002 340.7 $ 303.6 $ 369.5 $ 380.5 $ 513.6 $ 525.8 $ 873.4 $ 731.7 " 608.3 " 501.6 " 372.9 "2401 " 660.2 $ 7922 $ 0 2002
2003 516.3 " 337.6 " 385.4 " 468.9 "1198 " 651.2 "1016 "4557 "1002 " 626.4 " 452.9 " 387.6 " 966.6 "11599 " 0 2003
2004 358.0 " 331.8 " 359.1 " 390.3 "1095 " 956.4 "1350 " 788.2 "1860 " 628.9 # 429.1 " 398.6 " 745.4 # 8945 # 0 2004
2005 342.9 " 310.4 " 619.6 " 490.1 "1213 "2628 " 744.5 "1667 " 720.7 " 534.7 " 408.0 " 372.5 " 837.6 "10051 " 0 2005
2006 1066 " 5833 " 402.5" 401.2" 453.3" 463.1" 569.8" 620.7" 541.4" 421.4" 355.7" 330.2" 954.8" 11458 " 0 2006
2007 323.1" 272.4" 295.7" 338.2" 420.9" 437.4" 600.5" 597.3" 496.2" 429.6" 311.5" 323.7" 403.9" 4847 " 0 2007
2008 275.8"18187 $ 1175 "25735 $ 3399 " 1705 " 6125 " 2806 " 664.6" 437.7" 353.0" 301.2" 5097 $ 61166 $ 0 2008
2009 307.3" 230.2" 282.3" 296.9" 930.2" 1111 " 9675 " 1243 " 698.3" 475.3" 342.4" 283.6" 1323 " 15876 " 0 2009
2010 269.9" 247.4" 331.8" 653.9" 483.9" 486.2" 911.1" 828.4" 818.6" 354.5" 286.2" 325.4" 499.8" 5997 " 0 2010
2011 318.6" 9111 " 1222 " 335.7" 1931 " 3860 " 3707 " 3867 " 792.6# 609.9" 381.6# 299.5# 2203 # 26437 # 0 2011
2012 632.0# 290.8# 284.0" 335.6" 404.8" 2155 " 1139 " 689.6" 534.8" 389.0" 356.3" 772.5" 665.3# 7984 # 0 2012
2013 289.7" 230.5" 322.8" 322.7" 1368 " 510.7" 566.6" 1079 " 982.7" 476.9" 311.5" 288.0" 562.4" 6749 " 0 2013
2014 271.2" 233.5# 279.4# 1482 # 3224 " 609.6" 788.9" 636.5" 830.4" 502.9" 683.6" 391.2" 827.7# 9932 # 0 2014
2015 264.8" 616.9"27204 $ 707.3" 459.1" 625.5" 1969 " 3903 " 496.5" 340.9" 482.6" 272.2" 3112 $ 37342 $ 0 2015
2016 279.3 " 460.5 " 306.0 " 636.1 " 615.7 "1209 "3109 "1192 " 778.2 " 491.0 " 328.1 " 280.5 " 807.1 " 9685 " 0 2016
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
" ... Relative Uncertainty +/-10%
# ... Relative Uncertainty +/-15%
$ ... Relative Uncertainty +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 14/05/2026
Site 701009 Irwin River - Mountain Bridge Site 701009
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
2017 10110 $16374 $ 1821 " 345.0" 392.7" 395.6" 541.0" 1026 " 1665 " 443.5" 284.4" 281.3" 2807 $ 33679 $ 0 2017
2018 585.2" 252.0" 2290 " 324.6" 464.8" 684.1" 1862 " 1984 " 678.7" 441.8" 338.9" 299.7" 850.5" 10206 " 0 2018
2019 277.5" 235.5" 298.1" 314.9" 364.8" 2086 " 4672 " 757.5" 554.8" 418.0" 309.2" 282.2" 880.8" 10570 " 0 2019
2020 272.6" 895.1" 491.4" 353.4" 412.0" 544.2" 755.4" 2672 " 634.6" 443.6" 405.4" 300.9" 681.7" 8181 " 0 2020
2021 263.2& 283.5& 1556 " 5661 " 3145 " 2024 " 5276 " 3635 " 738.1" 689.1" 480.1" 350.4" 2008 & 24102 & 0 2021
2022 287.1" 245.1" 2063 " 1704 " 548.6" 660.5" 1217 "20870 " 2492 " 704.2" 476.0" 345.7" 2634 " 31613 " 0 2022
2023 306.6" 286.1" 383.5" 2383 " 528.8" 697.1" 733.6" 727.8" 590.7" 436.9" 348.8" 321.6# 645.4# 7745 # 0 2023
2024 313.0# 297.3" 348.6" 351.7" 427.7"23997 $18492 " 9277 " 1388 " 732.6" 505.1" 406.5" 4711 $ 56536 $ 0 2024
2025 348.6" 287.0" 342.7" 374.7" 465.7" 1122 " 2743 "15678 " 5188 " 925.6" 789.7" 499.0" 2397 " 28764 " 0 2025
2026 417.3 "575.1 "465.3 "542.6 "[220.7 ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [444.2 ][2221 ] 233 2026
Mean 677.8 &1482 &1520 $1741 $[6166 ]3202 $[5350 ]4258 $1243 # 572.4 $ 367.8 $[365.8 ] [2172 ][25943 ] Mean
Med. 283.2 & 300.4 & 353.9 $ 377.9 $[574.2 ]1117 $[1350 ]1243 $ 698.3 # 443.6 $ 344.2 $[300.3 ] Med.
Max 10110 &18187 &27204 $25735 $[135693]23997 $[51499 ]28968 $10959 # 4231 $ 789.7$[2401 ] [14523 ][174276 ] Max
Min 103.8& 130.8& 127.3$ 189.6$ [220.7] 395.6$ [292.2] 569.3$ 368.7# 251.3$ 207.2$ [117.4] [117.4] [117.4] Min
Total 29825& 65189& 66899$ 76621$[271296] 134495$[230038] 183076$ 53462# 24614$ 15815$ [16094] [97756][1167423] 634 Total
OK 100% 100% 100% 100% 98% 100% 98% 100% 100% 100% 100% 99% 100% 100% OK
Cnt 44 44 44 44 44 42 43 43 43 43 43 44 45 45 Cnt
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
" ... Relative Uncertainty +/-10%
# ... Relative Uncertainty +/-15%
$ ... Relative Uncertainty +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available