Update Perth dams catchment rainfall and water waste

My Catchment Rain Index updated. Large vers.

Plus my chart of catchment efficiency 1980-2017 – large vers.

And BTW calcs show from 2001-2017 1646GL of water could have been saved if catchments had been managed so that efficiency could have been maintained at ~5.6%. That = 96.8GL PA wasted. A whisker more than inflows this year. What would that waste be worth? A lazy $Bn ?

5 thoughts on “Update Perth dams catchment rainfall and water waste”

  1. Looks like ex TC Joyce is bringing record breaking Jan rain for some sites in the Perth region.
    Bickley has just had 139mm (data from 1969) beating 131.8 in 2000.

  2. Jarrahdale 9023 has a record now too 125mm already today with data from 1882 the prev highest was 113mm in 2000.
    Dwellingup 9538 has had 146 so far today which is way off the record 237.4 in 1982 – data from 1935.
    Here are some of the “all time records” ATR for Jan monthly rain from the Perth region with 2 weeks still to go
    Anketell 9258 117.8 prev 54.6 in 2006 data from 2002
    Bickley 9240 141.6 prev 131.8 in 2000 data from 1969 Prob ATR
    Garden Island HSF 107.6 prev 44.8 2006
    JANDAKOT AERO (009172) 120.6 prev 137.2 in 2000
    Jarrahdale 9023 126 prev 113 in 2000 data from 1882 ATR
    KARNET (009111) 132.6 prev 167 in 1982 data from 1963
    KARRAGULLEN NORTH (009015) 141 prev 163.2 in 2000 data from 1962
    MOUNT SOLUS (009260) 135.4 prev 47 from 2011 data from 2005
    MUNDARING (009030) 91 prev 145 from 1990 data from 1888
    Mundaring Weir (WaterCorp) 91.5
    PERTH AIRPORT (009021) 83.2 prev 102.1 in 2000 data from 1944
    PERTH METRO (009225) 103.4 prev 139 in 2000 data from 1993
    ROLEYSTONE (009113) 141.8 prev 147.6 from 2000 data from 1965
    ROTTNEST ISLAND (009193) 143.2 prev 59 in 2000 data from 1983 ATR see below
    Rottnest Island Lighthouse 9038 prev 139.8 in 1982 data from 1880
    SWANBOURNE (009215) 142.8 prev 140.8 in 2000 data from 1993
    Dwellingup 9538 has had 146 so far which is way off the Jan record 237.4 in 1982 – data from 1935.

  3. Looks like the Water Corporation have fixed the error in their dams rainfall page which had Victoria Dam with an annual average around 10 metres of rain. So somebody there is awake.

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