Water Information Reporting
Copyright © Government of Western Australia
Information supplied by the Department of Water and Environmental Regulation is protected by the Copyright Act 1968. That copyright belongs to the State of Western Australia.
Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright Act 1968, no part may be
reproduced or reused for any purpose without the written permission of the Department of Water and Environmental Regulation. Please click on the Copyright
link for full details.
Disclaimer / limitation of liability
The information contained herein is provided by the Department of Water and Environmental Regulation in good faith as a public service.
However, the Department does not guarantee the accuracy of this information, and it is the responsibility of recipients to make their own enquiries
as to its accuracy, currency and appropriateness. Telemetered data is provisional only and has not been verified for accuracy. If any aspect of this information is of significance to you, you should
discuss your particular circumstances with the Department. Please click on the Disclaimer
link for full details.
Should you require further information or technical assistance, please contact one of our water information officers.
Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Mean Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Mean Median Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Monthly Days Yr
1952 [ ] [ ] [ ] [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] [ ] 366 1952
1953 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1953
1954 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1954
1955 [ ]N [ ]N [ ]N 4.049$ 5.216" 10.54 $ 15.25 " 48.77 $ 19.14 " 10.05 " 1.360" 0.398" [12.75 ] [10.05 ] 90 1955
1956 0.014" 0.000" 0.042" 0.056" 1.537" 8.703$ 13.65 $ 10.45 " 2.769" 1.030" 0.472" 0.277# 3.250$ 0.751$ 0 1956
1957 0.024# 0.006" 0.018" 0.053" 0.227" 21.34 " 8.551" 7.503" 5.691" 1.224" 0.318" 0.083" 3.753# 0.272# 0 1957
1958 0.023" 0.006" 0.003" 0.013" 0.172" 0.868" 24.09 " 13.22 $ 3.490" 1.447" 0.390" 0.178" 3.658$ 0.284$ 0 1958
1959 0.102" 0.022" 0.192$ 0.057$ 0.031$ 1.118" 0.562" 5.663" 0.632" 1.072" 0.226# 0.034" 0.809$ 0.209$ 0 1959
1960 0.124" 0.006" 0.047" 0.037" 0.350" 1.750" 13.00 " 7.427# 2.193" 0.665# 0.099# 0.013" 2.142# 0.237# 0 1960
1961 0.004& 0.295& 0.177& 0.089& 0.035" 6.393" 10.27 " 10.46 " 8.244" 1.960" 0.336" 0.049$ 3.192& 0.315& 0 1961
1962 0.017$ 0.008" 0.012" 0.017" 0.062" 1.991" 3.129" 6.977" 4.794" 2.967" 0.902" 0.180" 1.755$ 0.541$ 0 1962
1963 0.015$ 0.003$ 0.007$ 0.015$ 0.116$ 9.420$ 26.22 " 30.26 $ 17.55 " 2.866$ 0.755" 0.090" 7.276$ 0.436$ 0 1963
1964 0.007$ 0.000$ 0.000$ 0.000$ 0.098$ 11.43 $ 44.47 $ 43.96 & 6.008" 4.659" 0.958" 0.474" 9.339& 0.716& 0 1964
1965 0.080" 0.009" 0.026" 0.030" 0.598" 3.361" 9.226" 5.886" 5.324" 5.821$ 3.122$ 0.533# 2.835$ 1.860$ 0 1965
1966 0.096$ 0.020$ 0.020$ 0.020$ 0.020$ 0.998$ 6.720" 5.611" 8.031" 1.911" 0.389$ 0.041$ 1.990$ 0.243$ 0 1966
1967 0.036$ 0.036$ 0.036$ 0.035$ 0.424" 11.83 " 22.53 " 9.829" 5.150" 0.892" 0.131" 0.033" 4.246$ 0.277$ 0 1967
1968 0.024" 0.009" 0.013" 0.057" 0.081" 3.558" 6.429" 8.110" 9.345" 2.705" 0.489" 0.110$ 2.578$ 0.300$ 0 1968
1969 [0.117] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [0.117] [0.117] 364 1969
1970 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1970
1971 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1971
1972 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1972
1973 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1973
1974 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1974
1975 [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] [ ] 365 1975
1976 [ ]N [ ]N [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1976
1977 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1977
1978 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1978
1979 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1979
1980 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1980
1981 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1981
1982 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1982
1983 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1983
1984 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1984
1985 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1985
1986 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1986
22369 Total
------------------ 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%
N ... Not Rated
[ ... Not Available Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Mean Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Mean Median Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Monthly Days Yr
1987 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1987
1988 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1988
1989 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1989
1990 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1990
1991 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1991
1992 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1992
1993 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1993
1994 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1994
1995 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1995
1996 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1996
1997 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1997
1998 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1998
1999 [ ] [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] [ ] 365 1999
2000 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2000
2001 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2001
2002 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2002
2003 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2003
2004 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2004
2005 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2005
2006 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2006
2007 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2007
2008 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2008
2009 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2009
2010 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2010
2011 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2011
2012 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2012
2013 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2013
2014 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2014
2015 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2015
2016 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2016
2017 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2017
2018 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2018
2019 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2019
2020 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2020
2021 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2021
22369 Total
------------------ 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%
N ... Not Rated
[ ... Not Available Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Mean Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Mean Median Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Monthly Monthly Days Yr
2022 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2022
2023 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2023
2024 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2024
2025 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2025
2026 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 2026
22369 Total
Mean [0.049] 0.032& 0.045& 0.323& 0.640$ 6.664$ 14.58 $ 15.30 & 7.026" 2.805$ 0.710$ 0.178$ [3.980] Mean
Med. [0.024] 0.008& 0.020& 0.036& 0.144$ 4.975$ 11.63 $ 8.969& 5.508" 1.936$ 0.431$ 0.100$ [0.448] Med.
Max [0.124] 0.295& 0.192& 4.049& 5.216$ 21.34 $ 44.47 $ 48.77 & 19.14 " 10.05 $ 3.122$ 0.533$ [12.75 ] Max
Min [0.004] 0.000& 0.000& 0.000& 0.020$ 0.868$ 0.562$ 5.611& 0.632" 0.665$ 0.099$ 0.013$ [0.117] Min
OK 93% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 99% OK
Cnt 14 13 13 14 14 14 14 14 14 14 14 14 15 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%
N ... Not Rated
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Maximum Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Max Days Yr
1952 [ ] [ ] [ ] [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] 366 1952
1953 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1953
1954 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1954
1955 [ ]N [ ]N [ ]N 4.614$ 9.502" 15.32 $ 45.76 " 98.00 $ 58.33 " 20.03 " 4.367" 0.697" [98.00 ] 90 1955
1956 0.064" 0.002" 0.876" 0.178" 6.796" 29.57 $ 42.82 $ 41.65 " 6.552" 1.997" 0.617" 0.581# 42.82 $ 0 1956
1957 0.083# 0.036" 0.064" 0.304" 1.035" 51.27 " 23.37 " 18.33 " 17.21 " 2.249" 0.593" 0.157" 51.27 # 0 1957
1958 0.064" 0.036" 0.018" 0.043" 0.869" 2.815"119.2 " 38.95 $ 8.712" 2.794" 0.739" 0.349" 119.2 $ 0 1958
1959 0.199" 0.068" 0.480$ 0.137$ 0.068$ 6.292" 1.591" 17.65 " 0.965" 4.142" 0.806# 0.315" 17.65 $ 0 1959
1960 0.552" 0.036" 0.732" 0.746" 2.388" 4.456" 56.18 " 24.81 # 4.367" 2.044# 0.297# 0.046" 56.18 # 0 1960
1961 0.030& 0.617& 0.406& 0.330& 0.423" 33.52 " 28.63 " 23.42 " 26.19 " 5.229" 0.785" 0.087$ 33.52 & 0 1961
1962 0.039$ 0.036" 0.058" 0.046" 0.611" 5.935" 7.918" 27.87 " 12.51 " 11.03 " 1.816" 0.464" 27.87 $ 0 1962
1963 0.064$ 0.009$ 0.030$ 0.030$ 0.869$ 26.99 $ 69.07 "100.5 $ 49.49 " 5.453$ 1.653" 0.356" 100.5 $ 0 1963
1964 0.030$ 0.000$ 0.000$ 0.006$ 0.249$ 40.05 $104.6 $155.6 & 11.06 " 7.760" 2.031" 0.948" 155.6 & 0 1964
1965 0.330" 0.068" 0.337" 0.228" 3.079" 17.25 " 22.89 " 19.91 " 8.934" 22.62 $ 11.24 $ 0.942# 22.89 $ 0 1965
1966 0.322$ 0.020$ 0.020$ 0.020$ 0.020$ 4.626$ 20.84 " 18.66 " 15.65 " 4.041" 1.229$ 0.077$ 20.84 $ 0 1966
1967 0.036$ 0.036$ 0.036$ 0.299$ 2.375" 32.78 " 64.55 " 22.52 " 23.46 " 1.859" 0.311" 0.081" 64.55 $ 0 1967
1968 0.162" 0.039" 0.064" 0.428" 0.348" 10.51 " 20.55 " 23.20 " 34.09 " 3.982" 1.093" 0.240$ 34.09 $ 0 1968
1969 [0.117] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [0.117] 364 1969
1970 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1970
1971 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1971
1972 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1972
1973 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1973
1974 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1974
1975 [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] 365 1975
1976 [ ]N [ ]N [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1976
1977 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1977
1978 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1978
1979 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1979
1980 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1980
1981 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1981
1982 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1982
1983 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1983
1984 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1984
1985 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1985
1986 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1986
22369 Total
------------------ 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%
N ... Not Rated
[ ... Not Available Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Maximum Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Max Days Yr
1987 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1987
1988 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1988
1989 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1989
1990 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1990
1991 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1991
1992 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1992
1993 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1993
1994 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1994
1995 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1995
1996 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1996
1997 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1997
1998 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1998
1999 [ ] [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] 365 1999
2000 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2000
2001 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2001
2002 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2002
2003 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2003
2004 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2004
2005 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2005
2006 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2006
2007 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2007
2008 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2008
2009 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2009
2010 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2010
2011 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2011
2012 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2012
2013 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2013
2014 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2014
2015 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2015
2016 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2016
2017 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2017
2018 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2018
2019 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2019
2020 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2020
2021 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2021
22369 Total
------------------ 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%
N ... Not Rated
[ ... Not Available Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Maximum Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Max Days Yr
2022 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2022
2023 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2023
2024 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2024
2025 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2025
2026 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] [ ] [ ] [ ] [ ] [ ] 365 2026
22369 Total
Mean [0.149] 0.077& 0.240& 0.529& 2.045$ 20.10 $ 44.85 $ 45.07 & 19.82 " 6.802$ 1.970$ 0.381$ [56.34 ] Mean
Med. [0.073] 0.036& 0.064& 0.203& 0.869$ 16.28 $ 35.72 $ 24.11 & 14.08 " 4.092$ 0.949$ 0.332$ Med.
Max [0.552] 0.617& 0.876& 4.614& 9.502$ 51.27 $119.2 $155.6 & 58.33 " 22.62 $ 11.24 $ 0.948$ [155.6 ] Max
Min [0.030] 0.000& 0.000& 0.006& 0.020$ 2.815$ 1.591$ 17.65 & 0.965" 1.859$ 0.297$ 0.046$ [0.117] Min
OK 93% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 99% OK
Cnt 14 13 13 14 14 14 14 14 14 14 14 14 15 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%
N ... Not Rated
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Minimum Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Min Days Yr
1952 [ ] [ ] [ ] [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] 366 1952
1953 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1953
1954 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1954
1955 [ ]N [ ]N [ ]N 3.382$ 4.061" 8.095$ 8.336" 13.40 $ 7.262" 4.201" 0.529" 0.055" [0.055] 90 1955
1956 0.000" 0.000" 0.000" 0.002" 0.043" 1.305$ 5.100$ 2.136" 1.508" 0.593" 0.236" 0.083# 0.000$ 0 1956
1957 0.000# 0.000" 0.000" 0.007" 0.030" 0.927" 3.582" 4.332" 1.458" 0.490" 0.119" 0.049" 0.000# 0 1957
1958 0.001" 0.000" 0.000" 0.000" 0.030" 0.330" 1.043" 3.065$ 2.024" 0.433" 0.087" 0.033" 0.000$ 0 1958
1959 0.052" 0.000" 0.000$ 0.001$ 0.000$ 0.049" 0.385" 0.949" 0.376" 0.279" 0.058# 0.000" 0.000$ 0 1959
1960 0.000" 0.000" 0.000" 0.000" 0.004" 0.490" 1.500" 3.034# 1.289" 0.257# 0.009# 0.000" 0.000# 0 1960
1961 0.000& 0.000& 0.038& 0.004& 0.000" 0.037" 2.680" 6.133" 1.396" 0.676" 0.083" 0.001$ 0.000& 0 1961
1962 0.000$ 0.000" 0.000" 0.000" 0.000" 0.308" 0.996" 2.332" 1.579" 0.599" 0.448" 0.022" 0.000$ 0 1962
1963 0.000$ 0.000$ 0.001$ 0.004$ 0.020$ 0.739$ 8.898" 7.013$ 5.453" 1.112$ 0.349" 0.014" 0.000$ 0 1963
1964 0.000$ 0.000$ 0.000$ 0.000$ 0.006$ 0.228$ 4.767$ 11.06 & 3.661" 2.010" 0.480" 0.221" 0.000& 0 1964
1965 0.000" 0.000" 0.000" 0.000" 0.002" 1.812" 2.249" 1.797" 2.889" 1.799$ 0.617$ 0.157# 0.000$ 0 1965
1966 0.011$ 0.020$ 0.020$ 0.020$ 0.020$ 0.020$ 1.416" 1.656" 2.821" 0.927" 0.077$ 0.036$ 0.011$ 0 1966
1967 0.036$ 0.036$ 0.036$ 0.018$ 0.018" 1.762" 11.85 " 3.628" 1.214" 0.311" 0.045" 0.009" 0.009$ 0 1967
1968 0.000" 0.000" 0.000" 0.002" 0.020" 0.162" 2.178" 3.328" 3.117" 1.093" 0.135" 0.022$ 0.000$ 0 1968
1969 [0.117] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [0.117] 364 1969
1970 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 1970
1971 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1971
1972 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1972
1973 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1973
1974 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1974
1975 [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] 365 1975
1976 [ ]N [ ]N [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1976
1977 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1977
1978 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1978
1979 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1979
1980 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1980
1981 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1981
1982 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1982
1983 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1983
1984 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1984
1985 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1985
1986 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1986
22369 Total
------------------ 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%
N ... Not Rated
[ ... Not Available Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Minimum Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Min Days Yr
1987 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1987
1988 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1988
1989 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1989
1990 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1990
1991 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1991
1992 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1992
1993 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1993
1994 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1994
1995 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1995
1996 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1996
1997 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1997
1998 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 365 1998
1999 [ ] [ ] [ ] [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] 365 1999
2000 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2000
2001 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2001
2002 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2002
2003 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2003
2004 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2004
2005 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2005
2006 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2006
2007 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2007
2008 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2008
2009 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2009
2010 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2010
2011 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2011
2012 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2012
2013 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2013
2014 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2014
2015 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2015
2016 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2016
2017 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2017
2018 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2018
2019 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2019
2020 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2020
2021 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2021
22369 Total
------------------ 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%
N ... Not Rated
[ ... Not Available Department of Water and Environmental Regulation HYMONTH V128 Output 14/08/2026
Site 612035 Collie River - Central Collie Site 612035
VarFrom 10.00 Stage - SL in Metres
VarTo 140.00 Minimum Stream Discharge in Cubic Metres/Second
Figures are for period ending 24:00
Annual Missing
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Min Days Yr
2022 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2022
2023 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2023
2024 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 366 2024
2025 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N 365 2025
2026 [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ]N [ ] [ ] [ ] [ ] [ ] [ ] 365 2026
22369 Total
Mean [0.015] 0.004& 0.007& 0.246& 0.304$ 1.162$ 3.927$ 4.562& 2.575" 1.056$ 0.234$ 0.050$ [0.013] Mean
Med. [0.000] 0.000& 0.000& 0.002& 0.019$ 0.410$ 2.465$ 3.197& 1.802" 0.638$ 0.127$ 0.027$ Med.
Max [0.117] 0.036& 0.038& 3.382& 4.061$ 8.095$ 11.85 $ 13.40 & 7.262" 4.201$ 0.617$ 0.221$ [0.117] Max
Min [0.000] 0.000& 0.000& 0.000& 0.000$ 0.020$ 0.385$ 0.949& 0.376" 0.257$ 0.009$ 0.000$ [0.000] Min
OK 93% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 99% OK
Cnt 14 13 13 14 14 14 14 14 14 14 14 14 15 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%
N ... Not Rated
[ ... Not Available