I am surprised the BoM and the WA Govt Water Corporation have not got their Perth dams rain data in order at the end of 2016. I have several posts on the subject through 2016 and have called for an audit. The latest was WA Water Corporation can not replace a couple of rain gauges … Continue reading Perth dams rain data 2016
Just ran an update as at 31 July – several Water Corporation stations look suspect – several BoM stations are out of date by months. My spreadsheet showing audit required.Source of BoM data and map – for a years daily data enter the 6 digit BoM station ID alongside Station number then click the Get … Continue reading Perth dams rain data is in need of an audit
Rainfall data show that while rainfall has not decreased that much in 40 years – runoff is drastically declining due to failure to manage catchment scrub. Link to graphic of monthly Perth dams runoff for a decade or so since 2000. 2015 media – 2014 media – 2013 media – 2011 media – blah blah
In 2011 the Perth region has enjoyed an above average rain year – as shown in my graphic of 37 years of Perth dams catchment region May-October rainfall. This second graphic shows the constant decline in “catchment efficiency” CE since the late 1990’s – which was about the last time water authorities did much to … Continue reading 2011 update 37 year Perth dams catchment rainfall trend – nearly a Thousand GL of water wasted over 15 years by not managing catchments
The Perth region has had a record dry year and this is shown in my graphic of 36 years of Perth dams catchment region May-October rainfall. However there is no statistically significant evidence the catchments are experiencing a continuing decline in rainfall – as expressed in the slogan “our drying climate” – the greenhouse doomster … Continue reading 2010 update 36 year Perth dams catchment rainfall trend
It is obvious that BoM and Water Corporation rain stations are low down in catchments near the various dams – convenient near roads and easy for staff to monitor. Click on Select Using Map – Large areas of the catchments are not monitored by BoM rainfall stations. In 1997 this contour map showed annual average … Continue reading Perth dam catchments rainfall – how much is that?
Could not make this up. “Please note the rainfall instruments located at Victoria Dam and Mundaring Weir are being serviced and are not currently recording rainfall. We are working to address this and resume measurement as soon as possible.” Still no reply to any emails to WA Govt on this issue. They must release all … Continue reading Call to audit Perth dam rain gauges – Water Corporation announces two of their rain gauges are down for service
March 2016 rainfall has been checked for a group of sixteen BoM stations listed below and the nine rain stations of Water Corporation from their dam sites. Five of the nine dam sites of Water Corporation registered zero or negligible rain for March. This is obviously in error and is amazingly negligent for an organization … Continue reading West Australian Govt Water Corporation fails to record March 2016 rain at several dams
On 27 January 2016 the West Australian Parliament Legislative Council held an Estimates hearing with witnesses from the Govt owned Water Corporation. Scroll right down to “Water Corporation” 27 Jan 2016 and click on the bottom link – Transcript of hearing – for a 32p 325KB pdf. Working through the 32 pages – four issues … Continue reading Friendly grilling for Perth Water Corporation at WA Parliament Estimates hearing
Checking this Water Corporation www page after seeing news that SW WA and the Wheatbelt has had some rain this year. My entries in red are rain data from AWN and the BoM. Map showing Perth water supply dams. I will check again later and see if WA Govt Water catch up.