Category Archives: Water

Dark Green policy unmasked after spider discovery

Recent news items copied below record the discovery of a 140 million year old trapdoor spider species in the SW of Western Australia. If is fascinating to read carefully the words from the Department of Environment and Conservation and ponder how they reveal exactly how Dark Green policy is formed that will impinge irrationally on the States population.
Here is a species that has survived since before the dinosaurs and in just the last million years has coped with four global ice ages, involving repeated climate changes through times that were most certainly, hotter than now, colder than now, wetter than now and dryer than now. Not to mention tens of thousands of years subjected to indigenous forest burning customs, followed by over a century of european logging.
Continue reading Dark Green policy unmasked after spider discovery

WA Govt. wastes 75 GL of rainwater in 2005

Perth uses approximately 300GL of water PA.

The Govt. is constructing a ~$400Mill seawater desalination plant to produce 45GL PA.

In 2005 May to October (the runoff season) Perth dam catchments which total 3500 squ. kms had circa 958mm of rain. This equates to about 3353GL water falling free into catchments of which approx. 115GL flowed into dams, meaning that catchment efficiency (yield) was 3.4%.

My graphic at the Perth Water Users web site shows that up until the mid 1990’s catchment efficiency was 5.5 to 6%. Let’s just assume for a minute that our Governments had been sensible and maintained catchment management work, keeping yields this year at say 5.7%. An increase of 2.3% (5.7-3.4) in this years yield would have put an extra 75+ GL (2.3% of 3353 GL) into our dams, which is 160% of the projected production from the Kwinana Desalination Plant (KDP), where costs have already blown out to over $387Million.