Water supply and dam level statistics

Perseverance Dam
49%

The table below provides weekly data for each of the three storage dams, and water consumption figures in litres/person/day for the past week when compared to the same time last year (for Toowoomba residents only).

 

Weekly water supply statistics 

Our dams supply water to the city and most of the towns to the north and west of Toowoomba.  The dam levels are influenced by rainfall and evaporation within their catchments, and the demand placed on them by usage. The table below offers a comparison of these factors on a daily basis with data recorded for the same time last year.

1. Water Supply From 9/06/2018 to 15/06/2018        
  Sat Sun Mon Tue Wed Thu Fri Week
Last 7 days: 9/06/2018 10/06/2018 11/06/2018 12/06/2018 13/06/2018 14/06/2018 15/06/2018 Total
Cressbrook Dam                
Production (ML) 15.6 26.5 34.9 17.7 17.9 17.6 17.7 147.9
Rainfall (mm) 0.2 0.0 0.0 0.0 0.0 0.2 0.0 0.4
Evaporation (mm) 1.2 2.0 2.0 1.4 2.6 2.0 2.2 13.4
Current Storage (ML) 42,302 42,266 42,230 42,194 42,194 42,158 42,122  
Usable Storage (%) 53.7 53.6 53.6 53.5 53.5 53.5 53.4  
Perseverance Dam                
Production (ML) 5.6 0.0 0.0 6.5 7.8 4.0 8.6 32.4
Rainfall (mm) 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.4
Evaporation (mm) 0.6 1.0 1.6 1.2 2.4 2.2 1.6 10.6
Current Storage (ML) 10,333 10,333 10,321 10,309 10,297 10,285 10,285  
Usable Storage (%) 38.4 38.4 38.4 38.3 38.3 38.2 38.2  
Cooby Dam                
Production (ML) 0.0 0.0 0.0 0.0 1.6 11.9 2.1 15.6
Rainfall (mm) 0.0 0.0 0.0 0.0 0.0 0.8 0.0 0.8
Evaporation (mm) 1.4 1.8 2.6 2.0 2.6 3.8 2.4 16.6
Current Storage (ML) 8,698 8,698 8,698 8,680 8,680 8,663 8,663  
Usable Storage (%) 44.2 44.2 44.2 44.1 44.1 44.0 44.0  
Total Dam Storage                
Current Storage (ML) 61,333 61,297 61,249 61,183 61,171 61,105 61,069  
Usable Storage (%) 48.9% 48.9% 48.8% 48.8% 48.8% 48.7% 48.7%  
Water Treatment                
Mt Kynoch WTP (ML) 28.7 30.3 32.8 33.1 31.8 32.2 33.1 222.0
Bores (ML) 6.5 6.4 5.8 6.6 5.5 7.1 6.5 44.4
                 
2. Water Consumption this year                
  Fri Sat Sun Mon Tue Wed Thu Week
Last 7 days: 8/06/2018 9/06/2018 10/06/2018 11/06/2018 12/06/2018 13/06/2018 14/06/2018 average
Toowoomba (ML/d) 27.8 27.3 34.3 30.9 23.9 30.3 40.6 30.7
Treated Water (ML/d) 34.7 34.1 40.9 38.1 31.2 37.4 47.8 37.7
Treated water (L/p/d) 243 239 287 267 219 263 335 265
Residential (L/p/d)               176
Bulk Water (ML/d) 34.7 34.1 40.9 38.1 31.2 37.4 47.8 37.7
Other Shires (ML/d) 6.8 6.8 6.6 7.1 7.3 7.1 7.2 7.0
                 
3. Water Consumption same time last year                
  Fri Sat Sun Mon Tue Wed Thu Week
Last 7 days: 9/06/2017 10/06/2017 11/06/2017 12/06/2017 13/06/2017 14/06/2017 15/06/2017 average
Toowoomba (ML/d) 28.7 29.0 29.0 27.1 26.1 30.5 27.6 28.3
Treated Water (ML/d) 36.4 36.4 29.5 33.4 32.8 37.5 34.1 34.3
Treated water (L/p/d) 287 286 232 263 258 295 269 270
Residential (L/p/d)               158
Bulk Water (ML/d) 36.4 36.4 34.5 33.4 32.8 37.5 34.1 35.0
Other Shires (ML/d) 7.8 7.3 5.5 6.4 6.7 7.0 6.5 6.7
                 
Note: 1. Dams storage figures are as at 9.00 am on the day shown.    
  2. Water consumption figures are for the 24 hr period commencing at 9.00 am  
  on the day shown.            
  3. Usable storage % reflects volume available for supply, not the % of the current volume

Daily water use figures

DAM LEVELS COMPARISON
  Permanent Conservation Measures Permanent Conservation Measures
from 9:00am 14 Jun 2018 to 9:00am Fri Jun 15 2018 to 9:00am Thu Jun 15 2017
Evaporation        
Cooby 2.4 mm 1.2 mm
Perseverance 1.5 mm 1.6 mm
Cressbrook 1.9 mm 1.4 mm
Dam Levels Usable Storage Total Storage Usable storage Total Storage
Cooby 44.0 % 8,663 ML 51.8   % 10,206 ML
Perseverance 38.2 % 10,285 ML 42.2   % 11,353 ML
Cressbrook 53.4 % 42,122 ML 66.4   % 52,367 ML
Combined 48.7% 61,069   ML 58.9% 73,926   ML
Rainfall in the Catchments - previous 7 days    
Cooby 0.8 mm 7.2 mm
Perseverance 0.4 mm 12.0 mm
Cressbrook 0.4 mm 15.6 mm
Total Usage of treated water 37.7 ML 34.3 ML
Rolling 7 day residential usage average (Toowoomba City residents only)
  176 L/p/d 158 L/p/d
         
         
NOTE 1. Usable storage % reflects volume available for supply, not the % of the total storage

Recent dam level readings

Date Cooby Creek Dam Cressbrook Creek Dam Perseverance Dam
15th June 2018 8663ML 42122ML 10285ML
14th June 2018 8663ML 42158ML 10285ML
13th June 2018 8680ML 42194ML 10297ML
12th June 2018 8680ML 42194ML 10309ML
11th June 2018 8698ML 42230ML 10321ML
8th June 2018 8698ML 42338ML 10333ML
7th June 2018 8698ML 42338ML 10345ML
6th June 2018 8698ML 42374ML 10357ML
5th June 2018 8698ML 42410ML 10369ML
4th June 2018 8716ML 42410ML 10381ML
1st June 2018 8734ML 42555ML 10406ML

 

 

 

 

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