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Current Dam levels
SourceSCA
Date2012-04-26
% full 96.85
1-week
% change
-0.50
Dams empty date (from 1-year differential)never
Sydney Dam Levels

Current Overall Dam levels and trends

SUMMARY: Analysis of Sydney and Warragamba's Dam levels and Trends
An in depth general analysis of short term trends (last few weeks) and longer term trends (since 2001) of Sydney's overall dam levels. This data is updated weekly when the SCA release their new data. Useful for people considering rainwater tanks, drip irrigation, grey water or other water saving techniques.

Daily dam levels - weekly changes and trend for the last month. Stats updated each week (Thursday afternoon, when SCA releases data).
For dam level estimate information since last Thursday, see Sydney and Warragamba Dam levels this month and Rainfall this week on Warragamba catchment and other catchments

2012-04-26 WarragambaOther DamsOverall
Available
GL(%)

(55.86%)

(246.61%)

(96.85%)
Weekly change
GL(%)
6.25
(0.31%)
-19.25
(-3.47%)
-13.00
(-0.50%)
Monthly change
GL(%)
-12.20
(-0.60%)
48.70
(8.78%)
36.50
(1.41%)
Yearly change
GL(%)
-80.66
(-3.98%)
663.66
(119.61%)
583.00
(22.58%)

The Carr government has indicated the next major change in water restrictions will take place when dams reach: 30%. This week we have 5 happy water drops and 4 sad water drops. For the month leading up to 2012-04-26 , dam levels have changed from 2462.5 GL (Gigalitres) to 2500.5 GL.

Current Trends for overall dam levels
  • At the overall rate of water loss in the past week in the dams, our supply will last 1346 days, less than 4 years and run out on 2016-1-2 .
  • At the overall rate of water gain in the past month in the dams, they will fill in 62 days, less than 1 years and will overflow on 2012-6-27 .
  • At the overall rate of water gain in the past year in the dams, they will fill in 813 days, less than 3 years and will overflow on 2014-7-18 .
  • In order to fill the dams (Warragamba in particular) we would need around 35 mm of rain within the next couple of weeks.

Overall dam levels since November 2001

Sydney's overall dam level has gradually dropped since it was last full in 1998. This figure shows the data since November 2001 for overall dam levels.

You can see this in more detail in the year-by-year figure below. This figure shows the overall dam levels for the last few years. Each line represents how full the dams are for that year. From this figure we can see that the large drops in dam levels (since November 2001) came in the second half of 2002 and first half or 2004. The rest of the time the levels appear fairly steady. As no two lines meet each other, we can say that in every 365 day period since 2001, the dam levels have gone down.

Are Warragamba dam's levels dropping faster or slower than Sydney's other dams?

In the following graph you can see the total amount of water available in Sydney's various dams since 2001. The thick line is the total system water available. It is obviously just how large a part of Sydney's entire system is made up by Warragamba.

Since 2001 the total water in Sydney's dams other than Warragamba has remained relatively constant (whilst Warragamba's level has dropped). This is obvious from the following diagram.

This difference is explained primarily by Sydney Water management primarily using Warragamba Dam water for Sydney's water needs (for several reasons). The fact that the droughts in NSW tend not to affect the coast significantly is also a factor.

Sydney dam levels main page
This month dam level statisticsRainfall this week
Trends of Sydney dam levelsUsage and Inflow trends
Firefox Extension (SydDams)Interactive Catchment Map
Dam levels for individual damsSydney Desalination plant impact on dam levels
Reduced Usage impact on dam levelsHow to save water in Sydney
General Information on Warragamba and Sydney's other Dams
Home irrigation/watering systems in Sydney
Old location of Sydney dam levels page
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I-live-in-sydney.com's subsite on Sydney's water is relevant to people interested in conserving water, rainwater tanks, irrigation, plumbing and plumbers. It can also be of interest to people examining water quality and filtering.