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Department of Water and Environmental Regulation HYMONTH V128 Output 21/01/2025
Site 616011 Swan River - Walyunga Site 616011
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
1970 [ ] [ ] [ ] [ ] [0.692] 22.65 " 22.27 " 12.67 " 7.331" 5.998" 0.409& 0.019& [9.004] [6.664] 134 1970
1971 [0.017] 0.212& 3.878& 4.886" 1.565" 3.358" 3.500" 9.075" 11.43 " 12.29 " 1.493" 0.286& [4.332] [3.429] 11 1971
1972 0.014& 0.000& 0.098& 0.005& [0.072] 3.414" 9.686" 30.49 " 10.78 " 1.941" 0.243& 0.004& [4.729] [0.171] 4 1972
1973 0.000& 0.000& 0.000& 0.000& [0.139] [ ] [72.85 ] 54.35 # 45.41 " 11.85 " 1.993" 0.152& [16.98 ] [0.152] 61 1973
1974 0.006& 0.000& 0.000& 13.62 & 20.06 " 59.26 "134.8 #199.6 ! 34.45 12.20 3.240 0.323 39.80 ! 12.91 ! 0 1974
1975 0.028& 0.000& 0.000& 0.460& 1.421 7.184 39.86 46.66 14.24 5.966 1.036 0.152& 9.750& 1.229& 0 1975
1976 0.052& 0.027& 0.073& 0.757& 2.075& 3.972& 4.986& 24.73 & 12.51 $ 3.885& 1.178& 0.124& 4.530& 1.627& 0 1976
1977 0.004& 0.000& 0.000& 0.000& 0.486& 2.378 3.503 16.54 3.045 1.418 1.690 0.027& 2.424& 0.952& 0 1977
1978 0.000& 0.000& 0.000& 0.650& 2.020 5.695 74.76 # 17.63 9.110 4.013 0.216 0.064& 9.513& 1.335& 0 1978
1979 0.005& 0.190& 0.178& 0.305& 0.794 5.763 8.788 13.51 4.611 1.216 0.502 0.052& 2.993& 0.648& 0 1979
1980 0.000& 0.000& 0.000& 0.078! 1.172& 5.457" 16.00 " 12.98 " 6.496" 2.993" 0.584& 0.075" 3.819! 0.878! 0 1980
1981 0.016" 0.000" 0.000" 0.031" [0.150][84.28 ] 61.51 "107.4 " 15.15 " 4.641" 2.504" 1.382& [23.09 ] [1.943] 9 1981
1982 5.284& 0.589& 0.040" [0.060] 0.948& 12.08 " 14.17 " 25.16 " 11.92 " 4.380" 0.681& 0.473& [6.315] [2.664] 3 1982
1983 0.015" 0.000" 0.688& 0.482& 0.211& 28.27 &156.6 " 75.53 " 84.54 " 6.344" 8.463" 0.956& 30.17 & 3.650& 0 1983
1984 1.071& 0.004" [0.124] [1.097] 18.62 " 17.37 " 21.34 " 29.13 " 24.15 " 4.042" 1.685& 0.198& [9.902] [2.864] 34 1984
1985 0.027" 0.231& 0.011" 0.099& 0.253! 1.462& 13.29 " 20.07 " 7.999" 1.935" 0.280& 0.031" 3.807! 0.266! 0 1985
1986 0.001" 3.924& 1.063& 0.072" 2.214$ 20.46 $ 39.29 $ 49.43 $ 13.06 $ 3.898$ 0.852$ 0.192& 11.20 & 3.056& 0 1986
1987 0.007& 0.000& 0.000& 0.194& 3.527$ 9.027$ 19.80 $ 33.15 $ 9.268$ 2.892$ 0.672$ 0.492$ 6.586& 1.782& 0 1987
1988 0.107& 0.000& 0.000& 0.000& 1.946& 18.78 $ 38.90 $ 37.21 $ 14.14 $ 10.77 $ 1.520$ 0.760$ 10.34 & 1.733& 0 1988
1989 0.104& 0.012& 0.020& 0.103& 3.123$ 15.61 $ 38.40 $ 16.83 $ 6.524# 4.453$ 0.623$ 0.079& 7.157& 1.873& 0 1989
1990 13.47 & 35.64 $ 6.371$ 2.975$ 17.17 ! 17.99 & 31.13 $ 25.03 $ 7.805# 4.007$ 0.957$ 0.178& 13.56 ! 10.64 ! 0 1990
1991 0.017& 0.006! 0.000! 0.117& 0.534$ 16.14 $ 54.06 $ 44.61 $ 17.68 $ 4.263$ 1.408! 0.869! 11.64 ! 1.138! 0 1991
1992 0.276& 1.065& 0.240& 2.236$ 1.109$ 12.81 $ 32.61 $ 88.26 $ 80.50 $ 13.75 $ 2.599$ 0.588$ 19.67 & 2.417& 0 1992
1993 0.057& 0.000& 0.210& 0.315$ 2.797$ 9.188! 14.82 ! 30.82 $ 21.87 $ 4.351$ 1.088$ 0.163& 7.140! 1.943! 0 1993
1994 0.000& 0.000& 0.000& 0.000& 2.372& 13.33 $ 27.41 $ 18.59 $ 5.569$ 1.208$ 0.178& 0.019& 5.724& 0.693& 0 1994
1995 0.000& 0.000& 0.000& 0.048& 2.603& 23.15 $106.8 $ 55.70 $ 22.54 $ 10.31 $ 1.582$ 0.360$ 18.59 & 2.093& 0 1995
1996 0.056& 0.000& 0.000& 0.000& 0.189& 17.36 $ 99.00 $ 90.52 $ 33.03 $ 10.27 $ 5.275$ 0.779$ 21.37 & 3.027& 0 1996
1997 0.038& 0.000& 0.021! 3.453! 1.464$ 6.026# 7.918# 24.36 $ 19.34 $ 2.756$ 0.454$ 0.084& 5.493! 2.110! 0 1997
1998 0.000& 0.000& 0.000& 0.017& 0.288& 7.904$ 19.54 $ 15.05 $ 24.45 $ 3.933$ 0.210& 0.009& 5.949& 0.249& 0 1998
1999 0.088& 0.021& 0.008& 0.166& 10.36 $ 33.08 $ 56.16 $ 45.09 $ 39.58 $ 25.94 $ 2.118$ 0.328& 17.74 & 6.237& 0 1999
2000 60.40 & 50.62 $ 4.050$ 1.047$ 1.263$ 4.632$ 37.02 $ 24.35 $ 22.40 $ 2.528$ 0.592$ 0.083& 17.41 & 4.341& 0 2000
2001 0.000& 0.000& 0.000& 0.000& 0.116& 0.794$ 3.006$ 19.35 $ 5.061$ 3.574$ 0.403$ 0.054& 2.697& 0.259& 0 2001
2002 0.001& 0.000& 0.000& 0.027& 0.331& 2.172$ 10.79 $ 8.083# 6.986$ 1.744$ 0.400& 0.014& 2.545& 0.365& 0 2002
2003 0.000& 0.421& 0.067& 2.826& 1.991& 5.761$ 32.54 $ 36.17 $ 15.08 $ 4.793$ 0.689$ 0.209& 8.378& 2.409& 0 2003
2004 0.009& 0.000& 0.000& 0.000& 0.162& 5.667$ 9.386$ 14.51 $ 9.235$ 2.307$ 0.569$ 0.116& 3.497& 0.365& 0 2004
602 Total
------------------ 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 +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 21/01/2025
Site 616011 Swan River - Walyunga Site 616011
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
2005 0.001& 0.000& 0.000& 0.439& 8.206$ 39.17 $ 19.15 $ 21.55 $ 16.07 $ 5.296$ 0.790$ 0.154& 9.236& 3.043& 0 2005
2006 13.05 & 2.568$ 0.264& 0.117& 0.355$ 0.580$ 2.157$ 10.15 $ 9.743# 1.454$ 0.253& 0.014& 3.392& 1.017& 0 2006
2007 0.000& 0.000& 0.000& 0.000& 0.319& 0.936$ 10.38 $ 24.63 $ 13.26 $ 2.726$ 0.352& 0.184& 4.399& 0.335& 0 2007
2008 0.012& 0.000& 0.000& 2.977& 0.894$ 2.300$ 24.59 $ 28.11 $ 4.928# 3.139$ 1.163$ 0.164& 5.690& 1.732& 0 2008
2009 0.369& 1.092& 0.319& 0.015& 0.054& 2.012$ 34.31 $ 30.55 $ 19.31 $ 3.477$ 1.058$ 0.125& 7.725& 1.075& 0 2009
2010 0.000& 0.000& 0.275& 0.370& 0.207& 0.776$ 3.500$ 2.410$ 1.203$ 0.201& 0.015& 0.000& 0.746& 0.241& 0 2010
2011 0.000& 0.000& 0.000& 0.000& 0.001& 0.517$ 8.229$ 27.27 $ 8.066# 3.748$ 2.241$ 0.668& 4.229& 0.592& 0 2011
2012 0.645& 0.054& 0.000& 0.000& 0.001& 2.789& 1.592$ 3.241$ 3.258$ 0.675$ 0.256& 0.783& 1.108& 0.660& 0 2012
2013 0.182& 0.010& 0.044& 0.118& 0.506& 0.678$ 3.604$ 15.08 $ 31.03 $ 5.308$ 0.490$ 0.038& 4.758& 0.498& 0 2013
2014 0.000& 0.000& 0.000& 0.000& 1.550& 4.601$ 17.75 $ 9.182# 8.648# 2.297$ 0.404$ 0.080& 3.709& 0.977& 0 2014
2015 0.000& 0.000& 0.000& 0.000& 0.083& 0.388$ 1.148$ 12.04 $ 2.808$ 0.405$ 0.128& 0.009& 1.417& 0.106& 0 2015
2016 0.070& 0.548& 1.776& 2.708$ 5.395$ 7.010# 24.59 $ 24.13 $ 12.74 $ 4.132$ 0.519$ 0.079& 6.975& 3.420& 0 2016
2017 0.001&103.0 & 10.73 $ 0.803$ 0.908$ 1.189& 6.876$ 39.65 $ 11.50 # 3.949$ 0.638$ 0.156& 14.95 & 2.569& 0 2017
2018 2.825& 0.463& 0.283& 0.062& 0.505$ 4.668$ 25.88 $ 59.55 $ 16.78 $ 4.614$ 0.942$ 0.180& 9.729& 1.883& 0 2018
2019 0.007& 0.000& 0.000& 0.000& 0.000& 3.803& 15.31 $ 9.002# 9.272$ 1.033$ 0.378& 0.007& 3.234& 0.193& 0 2019
2020 0.000& 0.000& 0.000& 0.000& 0.000& 0.744& 3.024$ 6.726$ 3.023$ 0.767$ 0.562$ 0.057& 1.242& 0.309& 0 2020
2021 0.000& 0.000& 8.564& 0.312$ 4.079$ 7.029# 87.78 $ 92.58 $ 17.17 $ 7.020# 2.230$ 0.206& 18.91 & 5.549& 0 2021
2022 0.001& 0.000& 0.000& 0.200& 0.436$ 6.402$ 9.792$ 98.78 $ 37.31 $ 5.084$ 1.497$ 0.234& 13.31 & 0.966& 0 2022
2023 0.002& 0.000& 1.380& 5.191# 2.277$ 14.53 $ 7.863# 9.581# 5.782$ 0.958$ 0.079& 0.000& 3.970& 1.828& 0 2023
2024 0.000& 0.000& 0.000& 0.000& 0.000& 0.515& 6.178$ 27.02 $ 10.39 $ 2.602$ 0.296& 0.020& 3.919& 0.158& 0 2024
2025 [0.000] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [0.000] [0.000] 346 2025
602 Total
Mean [1.788] 3.716! [0.755] [0.915] [2.364][11.17 ][30.00 ] 34.98 ! 16.72 $ 4.759& 1.140! 0.234! [8.938] Mean
Med. [0.007] 0.000! [0.000] [0.110] [0.894] [5.762][19.15 ] 24.73 ! 11.92 $ 3.933& 0.672! 0.152! [1.128] Med.
Max [60.40 ]103.0 ![10.73 ][13.62 ][20.06 ][84.28 ][156.6 ]199.6 ! 84.54 $ 25.94 & 8.463! 1.382! [39.80 ] Max
Min [0.000] 0.000! [0.000] [0.000] [0.000] [0.388] [1.148] 2.410! 1.203$ 0.201& 0.015! 0.000! [0.000] Min
OK 99% 100% 99% 99% 98% 100% 98% 100% 100% 100% 100% 100% 99% OK
Cnt 55 54 54 54 55 54 55 55 55 55 55 55 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 +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 21/01/2025
Site 616011 Swan River - Walyunga Site 616011
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
1970 [ ] [ ] [ ] [ ] [3.225] 67.33 " 66.95 " 28.81 " 12.47 " 19.14 " 0.986& 0.078& [67.33 ] 134 1970
1971 [0.070] 7.267& 43.41 & 18.86 " 3.250" 6.590" 10.37 " 18.55 " 53.52 " 47.11 " 4.191" 1.507& [53.52 ] 11 1971
1972 0.060& 0.000& 0.902& 0.015& [4.013] 10.25 " 15.91 " 66.04 " 25.85 " 4.994" 0.729& 0.025& [66.04 ] 4 1972
1973 0.000& 0.000& 0.000& 0.000& [0.425] [ ] [103.3 ]162.7 #126.0 " 27.59 " 4.916" 0.337& [162.7 ] 61 1973
1974 0.028& 0.000& 0.000& 62.78 & 74.46 "109.2 "256.8 #454.6 ! 69.78 17.74 7.957 0.841 454.6 ! 0 1974
1975 0.075& 0.000& 0.000& 3.048& 7.821 26.01 266.1 178.3 25.57 9.840 2.043 0.689& 266.1 & 0 1975
1976 0.258& 1.075& 0.670& 4.454& 7.861& 11.48 & 12.72 &104.5 & 38.19 $ 11.63 & 3.925& 0.363& 104.5 & 0 1976
1977 0.037& 0.000& 0.000& 0.000& 1.774& 8.011 12.39 42.61 6.170 3.370 11.10 0.106& 42.61 & 0 1977
1978 0.000& 0.000& 0.000& 6.126& 7.714 23.89 307.9 # 36.79 16.21 13.65 0.503 0.160& 307.9 & 0 1978
1979 0.033& 1.283& 0.652& 0.925& 3.116 15.57 14.93 47.26 8.711 2.356 1.798 0.160& 47.26 & 0 1979
1980 0.002& 0.000& 0.000& 0.836! 7.328& 22.98 " 36.73 " 28.16 " 12.15 " 6.506" 1.423& 0.251" 36.73 ! 0 1980
1981 0.102" 0.000" 0.000" 0.067" [4.247][364.2 ]212.9 "245.6 " 26.84 " 16.62 " 21.66 " 11.60 & [364.2 ] 9 1981
1982 60.13 & 3.761& 0.198" [0.071] 5.984& 42.80 " 31.90 " 51.81 " 21.80 " 14.67 " 1.478& 2.131& [60.13 ] 3 1982
1983 0.056" 0.000" 20.17 & 10.19 & 0.377&382.3 &652.6 "177.5 "230.3 " 15.99 " 39.08 " 13.09 & 652.6 & 0 1983
1984 10.19 & 0.031" [0.655] [4.484] 59.58 " 39.07 " 56.46 " 72.88 "120.0 " 8.187" 6.429& 0.436& [120.0 ] 34 1984
1985 0.161" 1.193& 0.048" 0.577& 1.174! 3.755& 29.03 " 32.33 " 21.52 " 5.690" 0.696& 0.054" 32.33 ! 0 1985
1986 0.010" 29.47 & 8.896& 0.156" 9.365$137.1 $129.8 $131.1 $ 26.33 $ 12.70 $ 1.435$ 0.450& 137.1 & 0 1986
1987 0.040& 0.000& 0.000& 1.135& 20.68 $ 32.02 $139.9 $149.1 $ 24.15 $ 10.66 $ 1.573$ 1.517$ 149.1 & 0 1987
1988 0.618& 0.000& 0.000& 0.000& 5.002& 31.71 $182.0 $ 98.45 $ 24.11 $ 32.57 $ 3.486$ 3.569$ 182.0 & 0 1988
1989 0.178& 0.101& 0.109& 0.321& 14.77 $ 48.31 $ 55.45 $ 35.58 $ 13.66 # 14.27 $ 1.732$ 0.225& 55.45 & 0 1989
1990 259.4 &192.4 $ 26.90 $ 9.162$156.2 ! 71.02 &102.3 $ 55.15 $ 13.39 # 9.730$ 2.339$ 0.361& 259.4 ! 0 1990
1991 0.104& 0.062! 0.000! 0.533& 2.519$ 64.42 $142.8 $157.6 $ 39.83 $ 9.162$ 3.569! 4.169! 157.6 ! 0 1991
1992 1.415& 9.933& 0.794& 18.22 $ 2.650$ 68.37 $ 78.61 $184.5 $184.5 $ 28.59 $ 10.07 $ 1.516$ 184.5 & 0 1992
1993 0.202& 0.000& 2.077& 0.483$ 13.36 $ 37.64 ! 33.97 ! 74.66 $ 70.80 $ 14.91 $ 2.919$ 0.671& 74.66 ! 0 1993
1994 0.004& 0.000& 0.000& 0.000& 35.43 & 32.61 $ 47.06 $ 74.89 $ 13.13 $ 2.496$ 0.435& 0.113& 74.89 & 0 1994
1995 0.000& 0.000& 0.000& 0.118& 10.73 & 79.95 $255.7 $157.9 $ 66.11 $ 48.72 $ 3.040$ 0.728$ 255.7 & 0 1995
1996 0.269& 0.000& 0.000& 0.000& 1.487& 67.44 $258.7 $266.3 $ 60.12 $ 32.57 $ 20.82 $ 1.752$ 266.3 & 0 1996
1997 0.202& 0.000& 0.324! 33.16 ! 2.473$ 10.66 # 13.96 # 65.07 $ 61.79 $ 8.346$ 0.804$ 0.311& 65.07 ! 0 1997
1998 0.000& 0.000& 0.000& 0.099& 0.763& 18.37 $ 33.27 $ 55.03 $ 64.74 $ 12.06 $ 1.088& 0.172& 64.74 & 0 1998
1999 1.057& 0.243& 0.372& 0.341&121.6 $ 57.25 $121.2 $101.5 $ 70.19 $ 81.90 $ 4.602$ 0.680& 121.6 & 0 1999
2000 284.8 &168.9 $ 9.764$ 3.695$ 1.857$ 13.51 $ 96.18 $ 53.44 $ 55.35 $ 5.689$ 1.019$ 0.306& 284.8 & 0 2000
2001 0.008& 0.000& 0.000& 0.000& 1.119& 1.143$ 35.67 $ 47.39 $ 24.07 $ 17.73 $ 1.164$ 0.159& 47.39 & 0 2001
2002 0.009& 0.000& 0.000& 0.140& 0.733& 4.460$ 26.30 $ 19.30 # 21.10 $ 5.024$ 1.442& 0.075& 26.30 & 0 2002
2003 0.000& 5.536& 0.594& 30.71 & 7.641& 56.84 $ 60.79 $ 78.84 $ 29.06 $ 23.38 $ 1.352$ 0.953& 78.84 & 0 2003
2004 0.027& 0.000& 0.000& 0.000& 0.458& 19.80 $ 30.03 $ 35.23 $ 28.58 $ 9.365$ 1.224$ 0.537& 35.23 & 0 2004
602 Total
------------------ 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 +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 21/01/2025
Site 616011 Swan River - Walyunga Site 616011
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
2005 0.015& 0.000& 0.000& 3.086& 30.18 $ 78.84 $ 33.27 $ 63.12 $ 31.28 $ 11.21 $ 1.921$ 0.240& 78.84 & 0 2005
2006 88.83 & 7.943$ 0.680& 0.254& 0.656$ 1.681$ 5.815$ 39.79 $ 21.34 # 2.797$ 0.586& 0.068& 88.83 & 0 2006
2007 0.000& 0.000& 0.000& 0.000& 1.889& 2.484$ 54.07 $ 51.47 $ 33.46 $ 5.791$ 1.027& 1.309& 54.07 & 0 2007
2008 0.087& 0.000& 0.000& 22.05 & 2.638$ 9.297$ 97.28 $169.9 $ 15.64 # 20.27 $ 6.057$ 0.435& 169.9 & 0 2008
2009 15.95 & 12.74 & 4.095& 0.058& 0.263& 20.65 $125.6 $ 67.66 $ 47.72 $ 9.095$ 3.040$ 0.450& 125.6 & 0 2009
2010 0.001& 0.000& 4.005& 2.230& 1.167& 1.326$ 11.53 $ 5.176$ 2.890$ 0.443& 0.068& 0.000& 11.53 & 0 2010
2011 0.000& 0.000& 0.000& 0.000& 0.280& 2.910$ 34.56 $ 76.88 $ 17.77 # 7.406$ 7.791$ 1.721& 76.88 & 0 2011
2012 19.37 & 0.202& 0.000& 0.000& 0.028& 10.73 & 2.507$ 6.759$ 11.04 $ 1.998$ 1.241& 7.973& 19.37 & 0 2012
2013 0.877& 0.086& 1.507& 0.311& 0.897& 1.135$ 15.09 $ 42.91 $ 71.91 $ 17.65 $ 1.352$ 0.144& 71.91 & 0 2013
2014 0.000& 0.000& 0.000& 0.000& 5.132& 14.45 $ 34.64 $ 20.75 # 19.30 # 6.546$ 1.151$ 0.483& 34.64 & 0 2014
2015 0.000& 0.000& 0.000& 0.000& 0.572& 1.309$ 13.58 $ 25.00 $ 6.133$ 0.870$ 0.243& 0.037& 25.00 & 0 2015
2016 1.317& 2.554& 22.86 & 7.882$ 13.89 $ 14.52 # 60.22 $ 38.81 $ 37.02 $ 10.24 $ 1.175$ 0.207& 60.22 & 0 2016
2017 0.014&380.8 & 26.61 $ 1.460$ 1.721$ 2.055& 28.87 $ 94.99 $ 20.92 # 14.20 $ 1.867$ 0.246& 380.8 & 0 2017
2018 23.41 & 7.232& 0.968& 0.214& 3.010$ 9.630$ 48.04 $150.6 $ 47.06 $ 8.863$ 1.921$ 0.423& 150.6 & 0 2018
2019 0.041& 0.000& 0.000& 0.000& 0.000& 24.03 & 35.31 $ 19.90 # 30.44 $ 1.899$ 1.159& 0.052& 35.31 & 0 2019
2020 0.000& 0.000& 0.000& 0.000& 0.000& 5.674& 5.309$ 20.79 $ 7.060$ 1.932$ 1.442$ 0.222& 20.79 & 0 2020
2021 0.000& 0.000&132.9 & 0.466$ 25.58 $ 20.34 #210.2 $223.9 $ 29.69 $ 14.84 # 6.759$ 0.651& 223.9 & 0 2021
2022 0.011& 0.000& 0.000& 0.581& 1.804$ 16.59 $ 23.25 $253.1 $ 78.32 $ 11.39 $ 2.835$ 0.647& 253.1 & 0 2022
2023 0.020& 0.000& 40.74 & 17.69 # 7.582$ 62.43 $ 17.36 # 20.55 # 15.71 $ 2.194$ 0.252& 0.000& 62.43 & 0 2023
2024 0.000& 0.000& 0.000& 0.000& 0.000& 1.544& 22.99 $ 51.90 $ 26.23 $ 8.995$ 0.600& 0.084& 51.90 & 0 2024
2025 [0.000] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [0.000] 346 2025
602 Total
Mean [13.99 ] 15.42 ! [6.497] [4.944][12.70 ][42.36 ][87.45 ] 91.52 ! 41.40 $ 13.88 & 3.918! 1.191! [131.3 ] Mean
Med. [0.040] 0.000! [0.000] [0.331] [3.010][20.07 ][36.73 ] 63.12 ! 26.33 $ 10.24 & 1.573! 0.363! Med.
Max [284.8 ]380.8 ![132.9 ][62.78 ][156.2 ][382.3 ][652.6 ]454.6 !230.3 $ 81.90 & 39.08 ! 13.09 ! [652.6 ] Max
Min [0.000] 0.000! [0.000] [0.000] [0.000] [1.135] [2.507] 5.176! 2.890$ 0.443& 0.068! 0.000! [0.000] Min
OK 99% 100% 99% 99% 98% 100% 98% 100% 100% 100% 100% 100% 99% OK
Cnt 55 54 54 54 55 54 55 55 55 55 55 55 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 +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 21/01/2025
Site 616011 Swan River - Walyunga Site 616011
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
1970 [ ] [ ] [ ] [ ] [0.355] 3.225" 7.138" 6.687" 4.003" 0.851" 0.060& 0.000& [0.000] 134 1970
1971 [0.000] 0.000& 0.000& 0.445" 0.333" 1.898" 1.936" 3.581" 3.370" 2.764" 0.729" 0.056& [0.000] 11 1971
1972 0.000& 0.000& 0.000& 0.000& [0.000] 0.611" 4.450" 7.957" 3.100" 0.715" 0.025& 0.000& [0.000] 4 1972
1973 0.000& 0.000& 0.000& 0.000& [0.000] [ ] [54.69 ] 18.45 # 14.11 " 4.916" 0.324" 0.028& [0.000] 61 1973
1974 0.000& 0.000& 0.000& 0.000& 1.762" 34.60 " 55.57 # 68.17 ! 17.74 7.580 0.841 0.075 0.000! 0 1974
1975 0.000& 0.000& 0.000& 0.000& 0.510 2.780 5.136 16.86 7.896 2.014 0.435 0.027& 0.000& 0 1975
1976 0.000& 0.000& 0.021& 0.036& 0.357& 1.169& 1.886& 2.662& 4.273$ 0.806& 0.363& 0.020& 0.000& 0 1976
1977 0.000& 0.000& 0.000& 0.000& 0.000& 0.539 1.257 2.371 1.373 0.411 0.106 0.000& 0.000& 0 1977
1978 0.000& 0.000& 0.000& 0.000& 0.091 1.400 7.660# 8.655 4.516 0.503 0.071 0.019& 0.000& 0 1978
1979 0.000& 0.000& 0.019& 0.029& 0.174 1.232 4.406 3.014 2.303 0.347 0.157 0.002& 0.000& 0 1979
1980 0.000& 0.000& 0.000& 0.000! 0.078& 1.081" 4.532" 7.411" 3.149" 1.403" 0.224& 0.020" 0.000! 0 1980
1981 0.000" 0.000" 0.000" 0.000" [0.020][20.48 ] 16.40 " 25.28 " 6.634" 1.774" 0.837" 0.094& [0.000] 9 1981
1982 0.035& 0.035& 0.006" [0.042] 0.071& 1.081" 5.240" 11.99 " 4.803" 1.117" 0.240& 0.056& [0.006] 3 1982
1983 0.000" 0.000" 0.000& 0.078& 0.089& 0.268& 25.49 " 31.15 " 15.99 " 1.690" 1.271" 0.361& 0.000& 0 1983
1984 0.031& 0.000" [0.000] [0.530] 1.710" 11.14 " 9.210" 12.85 " 8.128" 1.321" 0.430& 0.064& [0.000] 34 1984
1985 0.000" 0.000& 0.000" 0.000& 0.071! 0.474& 3.755" 7.300" 4.036" 0.641" 0.054& 0.010" 0.000! 0 1985
1986 0.000" 0.000& 0.097& 0.043" 0.111$ 1.249$ 15.57 $ 26.33 $ 4.587$ 1.435$ 0.318$ 0.038& 0.000& 0 1986
1987 0.000& 0.000& 0.000& 0.000& 0.470$ 0.911$ 6.133$ 10.87 $ 4.206$ 1.034$ 0.321$ 0.129$ 0.000& 0 1987
1988 0.000& 0.000& 0.000& 0.000& 0.000& 2.674$ 9.263$ 14.55 $ 7.582$ 2.302$ 0.479$ 0.144$ 0.000& 0 1988
1989 0.055& 0.000& 0.000& 0.000& 0.170$ 5.002$ 12.99 $ 8.252$ 3.637# 1.732$ 0.188$ 0.015& 0.000& 0 1989
1990 0.000& 11.14 $ 1.326$ 0.694$ 0.308! 2.426& 2.077$ 12.30 $ 5.243# 1.622$ 0.354$ 0.041& 0.000! 0 1990
1991 0.000& 0.000! 0.000! 0.000& 0.135$ 1.326$ 14.80 $ 15.29 $ 6.813$ 1.773$ 0.628! 0.148! 0.000! 0 1991
1992 0.031& 0.025& 0.044& 0.217$ 0.600$ 0.815$ 14.27 $ 13.17 $ 28.59 $ 1.878$ 1.042$ 0.144$ 0.025& 0 1992
1993 0.000& 0.000& 0.000& 0.163$ 0.401$ 3.371! 7.641! 12.99 $ 6.312$ 1.525$ 0.499$ 0.004& 0.000! 0 1993
1994 0.000& 0.000& 0.000& 0.000& 0.000& 2.638$ 9.331$ 5.265$ 2.032$ 0.435$ 0.062& 0.000& 0.000& 0 1994
1995 0.000& 0.000& 0.000& 0.000& 0.046& 1.773$ 6.867$ 26.23 $ 5.910$ 2.401$ 0.651$ 0.230$ 0.000& 0 1995
1996 0.000& 0.000& 0.000& 0.000& 0.000& 0.533$ 20.07 $ 30.55 $ 18.91 $ 4.077$ 1.460$ 0.188$ 0.000& 0 1996
1997 0.000& 0.000& 0.000! 0.101! 0.704$ 2.473# 2.473# 5.744$ 4.132$ 0.804$ 0.287$ 0.000& 0.000! 0 1997
1998 0.000& 0.000& 0.000& 0.000& 0.076& 0.520$ 9.730$ 5.536$ 9.764$ 0.439$ 0.000& 0.000& 0.000& 0 1998
1999 0.000& 0.000& 0.000& 0.000& 0.138$ 14.77 $ 23.64 $ 19.90 $ 23.18 $ 4.561$ 0.632$ 0.060& 0.000& 0 1999
2000 0.037& 1.088$ 0.604$ 0.694$ 0.946$ 0.997$ 4.545$ 13.83 $ 5.689$ 1.007$ 0.257$ 0.006& 0.006& 0 2000
2001 0.000& 0.000& 0.000& 0.000& 0.000& 0.572$ 0.602$ 5.728$ 2.147$ 1.159$ 0.158$ 0.007& 0.000& 0 2001
2002 0.000& 0.000& 0.000& 0.000& 0.052& 0.235$ 3.827$ 3.915# 2.050$ 0.704$ 0.075& 0.000& 0.000& 0 2002
2003 0.000& 0.000& 0.000& 0.093& 0.086& 0.961$ 10.38 $ 11.76 $ 7.671$ 1.266$ 0.293$ 0.022& 0.000& 0 2003
2004 0.000& 0.000& 0.000& 0.000& 0.000& 0.435$ 3.705$ 5.332$ 2.351$ 1.119$ 0.272$ 0.013& 0.000& 0 2004
602 Total
------------------ 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 +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available
Department of Water and Environmental Regulation HYMONTH V128 Output 21/01/2025
Site 616011 Swan River - Walyunga Site 616011
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
2005 0.000& 0.000& 0.000& 0.000& 0.114$ 3.322$ 9.530$ 6.599$ 6.949$ 1.899$ 0.183$ 0.038& 0.000& 0 2005
2006 0.026& 0.661$ 0.055& 0.048& 0.214$ 0.379$ 0.990$ 2.426$ 2.650# 0.508$ 0.062& 0.000& 0.000& 0 2006
2007 0.000& 0.000& 0.000& 0.000& 0.000& 0.386$ 1.451$ 9.062$ 5.791$ 0.932$ 0.051& 0.016& 0.000& 0 2007
2008 0.000& 0.000& 0.000& 0.000& 0.427$ 1.460$ 2.860$ 4.521$ 2.507# 0.789$ 0.372$ 0.010& 0.000& 0 2008
2009 0.000& 0.005& 0.000& 0.000& 0.002& 0.183$ 6.759$ 12.06 $ 9.095$ 1.151$ 0.446$ 0.001& 0.000& 0 2009
2010 0.000& 0.000& 0.000& 0.057& 0.031& 0.412$ 0.618$ 1.283$ 0.439$ 0.064& 0.000& 0.000& 0.000& 0 2010
2011 0.000& 0.000& 0.000& 0.000& 0.000& 0.238$ 1.899$ 8.538$ 3.553# 1.488$ 0.165$ 0.086& 0.000& 0 2011
2012 0.058& 0.000& 0.000& 0.000& 0.000& 0.024& 0.877$ 0.990$ 1.497$ 0.125$ 0.035& 0.063& 0.000& 0 2012
2013 0.010& 0.000& 0.000& 0.018& 0.084& 0.529$ 0.435$ 5.067$ 12.06 $ 1.343$ 0.120$ 0.000& 0.000& 0 2013
2014 0.000& 0.000& 0.000& 0.000& 0.000& 1.019$ 3.688$ 4.005# 3.242# 0.953$ 0.133$ 0.000& 0.000& 0 2014
2015 0.000& 0.000& 0.000& 0.000& 0.000& 0.111$ 0.586$ 5.838$ 0.863$ 0.144$ 0.030& 0.000& 0.000& 0 2015
2016 0.000& 0.019& 0.000& 0.685$ 1.397$ 4.281# 4.706$ 13.51 $ 6.261$ 1.167$ 0.129$ 0.013& 0.000& 0 2016
2017 0.000& 0.000& 1.442$ 0.609$ 0.581$ 0.728& 1.641$ 15.53 $ 5.002# 1.867$ 0.183$ 0.074& 0.000& 0 2017
2018 0.002& 0.080& 0.060& 0.017& 0.135$ 1.292$ 4.095$ 18.45 $ 4.789$ 1.910$ 0.318$ 0.040& 0.002& 0 2018
2019 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 6.108$ 4.747# 1.899$ 0.446$ 0.050& 0.000& 0.000& 0 2019
2020 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 1.661$ 1.564$ 1.535$ 0.181$ 0.181$ 0.000& 0.000& 0 2020
2021 0.000& 0.000& 0.000& 0.235$ 0.254$ 3.536# 4.810$ 24.20 $ 6.442$ 2.810# 0.651$ 0.011& 0.000& 0 2021
2022 0.000& 0.000& 0.000& 0.000& 0.125$ 0.836$ 3.603$ 18.26 $ 11.21 $ 2.401$ 0.637$ 0.020& 0.000& 0 2022
2023 0.000& 0.000& 0.000& 2.875# 0.820$ 0.946$ 4.852# 3.436# 2.124$ 0.252$ 0.000& 0.000& 0.000& 0 2023
2024 0.000& 0.000& 0.000& 0.000& 0.000& 0.000& 1.080$ 15.78 $ 2.519$ 0.600$ 0.083& 0.000& 0.000& 0 2024
2025 [0.000] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [0.000] 346 2025
602 Total
Mean [0.005] 0.242! [0.068] [0.143] [0.255] [2.691] [8.162] 11.96 ! 6.303$ 1.476& 0.327! 0.043! [0.001] Mean
Med. [0.000] 0.000! [0.000] [0.000] [0.089] [1.008] [4.706] 8.655! 4.587$ 1.159& 0.240! 0.016! Med.
Max [0.058] 11.14 ! [1.442] [2.875] [1.762][34.60 ][55.57 ] 68.17 ! 28.59 $ 7.580& 1.460! 0.361! [0.025] Max
Min [0.000] 0.000! [0.000] [0.000] [0.000] [0.000] [0.435] 0.990! 0.439$ 0.064& 0.000! 0.000! [0.000] Min
OK 99% 100% 99% 99% 98% 100% 98% 100% 100% 100% 100% 100% 99% OK
Cnt 55 54 54 54 55 54 55 55 55 55 55 55 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 +/-20%
& ... Relative Uncertainty +/-30%
[ ... Not Available