See HERE for how Deep Water Storage has been removed.
Thursday, December 28, 2006
Saturday, December 23, 2006
Sydney 'first to run out of water'
Well it looks like Sydney is getting noticed out there. Maude Barlow a Canadian no less, has seen the dire straights that Sydney may be in - very soon. This article reports on her recent comments.
I do hope we see some sign of urgency here in Sydney - if our little chart continues it's downward trend then when will people start looking at exiting?
What will exiting mean? Perhaps it is time to stir things up and highlight how this will affect house prices in Sydney. Nothing like a threat to the hip pocket (if thirst doesn't do the trick)
Anyway - Merry Christmas - and send your wishes for a long WET 2007...
I do hope we see some sign of urgency here in Sydney - if our little chart continues it's downward trend then when will people start looking at exiting?
What will exiting mean? Perhaps it is time to stir things up and highlight how this will affect house prices in Sydney. Nothing like a threat to the hip pocket (if thirst doesn't do the trick)
Anyway - Merry Christmas - and send your wishes for a long WET 2007...
Thursday, December 21, 2006
Chart with Trendline
I thought I would knock this one out before Christmas. It is the same data - without the Deep Water Storage - with an added trendline. I think I might update this once a month.
So as at December 21st 2006 - the trend is showing that we will hit the following milestones:
30% - February 2006
20% - November 2007
10% - September 2008
0% - June 2009 (this is where we will be expected to start drinking the Deep Water Storage)
So as at December 21st 2006 - the trend is showing that we will hit the following milestones:
30% - February 2006
20% - November 2007
10% - September 2008
0% - June 2009 (this is where we will be expected to start drinking the Deep Water Storage)
Tuesday, December 19, 2006
Chart Change
I am going to make a slight change to the way the charts will be displayed.
The chart will display the last reading of each month - corrected to remove the Deep Water Storage.
For the current month I will update the reading Weekly.
So for instance:
On December 14th we will have the last reading for the previous months + the reading for December 14.
On December 21st we we will have the last reading for the previous months + the reading for December 21 (and remove December 14).
Okay - this will commence when the reading comes out tomorrow - hopefully.
The chart will display the last reading of each month - corrected to remove the Deep Water Storage.
For the current month I will update the reading Weekly.
So for instance:
On December 14th we will have the last reading for the previous months + the reading for December 14.
On December 21st we we will have the last reading for the previous months + the reading for December 21 (and remove December 14).
Okay - this will commence when the reading comes out tomorrow - hopefully.
More Water Found in Sydney
Here is an interesting article about an additional 12 million litres of water per day that could be extracted from an aquifer found between Centennial Park and Botany Bay:
Conservative estimates are that an extra 12 million litres of water a day - four billion litres a year - could be extracted from the aquifer as it stands.
But University of NSW researchers believe this figure could be much higher if the aquifer was "recharged'' with additional stormwater and treated waste water.
Read the whole article HERESunday, December 17, 2006
Updated Chart
This chart uses the same data but has been updated so the current water level can be seen against the total storage level possible. I have also added the 30% water level line.
We are getting very close to this 30% line. This is more of a phycological barrier as my understanding is we will not move from the current Level 3 restrictions - to Level 4 restrictions until the water level reaches less than 25% (and as this will be using the 'official' storage levels that include deep water - this will still be some time off).
We are getting very close to this 30% line. This is more of a phycological barrier as my understanding is we will not move from the current Level 3 restrictions - to Level 4 restrictions until the water level reaches less than 25% (and as this will be using the 'official' storage levels that include deep water - this will still be some time off).
Saturday, December 16, 2006
First Chart
This is the first chart. It takes the data from the first reading of each month for this year - 2006. The data is taken from the Sydney Catchment Authority and has been adjusted to remove the Deep Water storage.
From now on I will update this chart on a weekly basis when the new data reading is made public (usually on a Thursday).
Why I am doing this
From now on I will update this chart on a weekly basis when the new data reading is made public (usually on a Thursday).
Why I am doing this
How Deep Water is Subtracted
This is a very basic calculation using Sydney Catchment Authority data.
On the 20th April 2006 there was no Deep Water added to the total storage amount. At this time the total storage amount was 2,385,300 megalitres.
On the 27th April 2006 Deep Water was added to the total storage amount. This increased the total storage amount to 2,584,300 megalitres.
This is an increase of 199,000 megalitres. It is this figure that is used to adjust the total storage water charts to remove the undrinkable deep water storage.
On the 20th April 2006 there was no Deep Water added to the total storage amount. At this time the total storage amount was 2,385,300 megalitres.
On the 27th April 2006 Deep Water was added to the total storage amount. This increased the total storage amount to 2,584,300 megalitres.
This is an increase of 199,000 megalitres. It is this figure that is used to adjust the total storage water charts to remove the undrinkable deep water storage.
New Start
The idea behind this blog is very simple. To display a corrected graph of Sydney's water storage.
What prompted this was two fold.
1. To date - December 16th 2006 - the Sydney Catchment Authority has not created charts for the December 2006 measurements.
The raw data can be found at their web page here:
http://www.sca.nsw.gov.au/dams/bydate_index.html
It is a concern that they have stopped this (maybe only temporary) - so I have decided to create my own graphs based on their data. Primarily for my own interest.
2. The Sydney Catchment Authority charts add the deep water storage to the normal water storage data. Based on recent reports however, this deep water storage is undrinkable and should not have been added to the overall storage levels. There are many articles that discuss this, but here is an example: The Age
So I believe the charts here are a much more accurate assessment of where Sydney stands on the water storage front. This is not propaganda - all data is taken from the Sydney Catchment Authority - it is just being displayed differently.
What prompted this was two fold.
1. To date - December 16th 2006 - the Sydney Catchment Authority has not created charts for the December 2006 measurements.
The raw data can be found at their web page here:
http://www.sca.nsw.gov.au/dams/bydate_index.html
It is a concern that they have stopped this (maybe only temporary) - so I have decided to create my own graphs based on their data. Primarily for my own interest.
2. The Sydney Catchment Authority charts add the deep water storage to the normal water storage data. Based on recent reports however, this deep water storage is undrinkable and should not have been added to the overall storage levels. There are many articles that discuss this, but here is an example: The Age
So I believe the charts here are a much more accurate assessment of where Sydney stands on the water storage front. This is not propaganda - all data is taken from the Sydney Catchment Authority - it is just being displayed differently.
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