Water Information Reporting

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Total Annual Discharge report

    Department of Water and Environmental Regulation HYANN V83  Output 18/04/2021

    Site     615062          Avon River - Northam Weir
    Variable 151.00          Stream Discharge Volume in Megalitres

    Year   Annual              Days            Rank
           Total               Missing
           (Megalitres)
    -----------------------------------------------
    1977          20580                          39
    1978         169700                           8
    1979          60220                          26
    1980          21820                          38
    1981         268100                           4
    1982          51540                          30
    1983         497600                           1
    1984         111700                          14
    1985          42850                          32
    1986         146100                          11
    1987          54560                          29
    1988         122000                          13
    1989         110800                          15
    1990         167700                           9
    1991         103700                          16
    1992         245200                           5
    1993          80120                          21
    1994          71360                          23
    1995         152700                          10
    1996         317000                           2
    1997          68580                          25
    1998          95980                          17
    1999         207400                           7
    2000         316900                           3
    2001          30910                          36
    2002          17790                          40
    2003          79720                          22
    2004          29290                          37
    2005         131300                          12
    2006          42570                          33
    2007          56000                          28
    2008          83450                          20
    2009          95000                          18
    2010          12250                          42
    2011          58450                          27
    2012          12030                          43
    2013          46980                          31
    2014          37310                          34
    2015          14890                          41
    2016          68970                          24
    2017         241000                           6
    2018          93070                          19
    2019          33550                          35
    2020          10290                          44
    2021           5339           259            45

    Total       4704000           259
    Minimum        5339
    Maximum      497600
    Mean         104500
    Median        71360