Daily Water Data

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Daily Water Data

  • The dry weather of Spring caused water in the Orara and Nymboida Rivers to fall below levels where extraction was permitted, so both the Coffs Harbour and Clarence Valley communities relied solely on water stored in Karangi and Shannon Creek Dams to meet their water needs. With good rainfall starting in December, our communities are still relying on our stored supplies of water until the quality of water in the Orara and Nymboida Rivers permits extraction. See below for more information on the the important balance between quantity and quality in our raw water sources
  • Once the release of over two billion litres of water from Shannon Creek Dam to meet environmental flow conditions is complete, the amount of water stored in the dam will drop below the 80% trigger for Level 1 Water Restrictions
  • The release water came into Shannon Creek Dam during the February 2020 floods but was not released at the time due to damage to the catchment caused by the Nymboida bushfires and water quality issues following the floods
  • The Councils' request to the NSW Government for a one-time exemption to the release condition was unsuccessful
  • Water Restrictions will stay in place in both the Coffs Harbour and Clarence Valley areas served by the Regional Water Supply Scheme until significant rains increase the flows in the Orara and Nymboida Rivers and dam storage levels can be increased 
  • Keep up to date with the most current Water Restrictions on Councils' Water Restrictions page





Daily Water Data

Data

 

 Sat

Sun 

Mon 

Tues 

Wed 

Thur 

Fri 

 

06/03/21

07/03/21

01/03/21

02/03/21

03/03/21

04/03/21

05/03/21

CAPACITY & USE

​Combined Dams Capacity

84.4 %
83.7 %
85.6 %
​85.6 %
85.0 %
85.6 %
84.9 %

Karangi Dam

NA

NA

99.8 %

NA
95.8 %

NA

98.5 %

Karangi Dam Volume

(5,600ML)

NA

NA

5,589 ML

NA

5,367 ML

NA
5,517 ML

Shannon Creek Dam Capacity

81.7 %
80.9 %
83.2 %
83.2 %
83.2 %
83.2 %
82.6 %

Shannon Creek Dam Volume

(30,000ML)

24,435 ML
24,199 ML
24,876 ML
24,875 ML
24,881 ML
24,885 ML
24,711 ML

Use -
(7-Day Average)
Target is 17ML/day 

14.5 ML

14.3 ML

14.5 ML 

 14.4 ML

14.4 ML 

14.6 ML 

14.8 ML

Backfeed to Clarence Valley Council 

8.3 ML

8.9 ML 

7.6 ML

8.3 ML

7.6 ML

8.8 ML 

8.1 ML

EXTRACTION

Orara River to Karangi Dam

11.6 ML

0.0 ML 

0.0 ML 

0.0 ML

0.0 ML

0.0 ML 

11.6 ML

Nymboida River to Karangi Dam

0.0 ML

0.0 ML

0.0 ML 

0.0 ML

0.0 ML

0.0 ML 

0.0 ML

Nymboida River to Shannon Creek Dam

0.0 ML
0.0 ML
0.0 ML
0.0 ML
0.0 ML
0.0 ML
0.0 ML

Shannon Creek Dam to Karangi Dam

0 ML
0 ML
0 ML
0 ML
0 ML
0 ML
0 ML









The water we store in Karangi and Shannon Creek Dams to supply our drinking water is sourced from the Orara and Nymboida Rivers. There are two vital aspects to river water in these catchments which Council assesses to ensure our community has a safe and secure drinking water supply – water quantity and water quality.

Following heavy rain events, quantity may be well above minimum licenced environmental flow levels but quality issues can arise which prevent the extraction of this water into our dams for a period of time. Council monitors the water quality including turbidity levels – a measure of how much dirt is in the water - and will begin pumping once the quality tests indicate the river water is clean enough to take water from the rivers into our storage dams for our drinking water supplies.

Shannon Creek Dam is a storage dam built in the Shannon Creek catchment but only water pumped from the Nymboida River is permitted to be stored in Shannon Creek Dam. 

The water licence from the NSW Government for Council to operate the Shannon Creek Dam requires that any rainfall which falls within the Shannon Creek catchment be released from the dam to continue its normal flow through the Shannon Creek catchment. This is to ensure that Shannon Creek Dam has minimal impact on the local Shannon Creek environment. 

Even if we are on water restrictions at the time, releasing the water from the dam is a critical process to minimise the environmental impact of the dam and comply with our licence requirements.

Water Restrictions are based on the combined storage level of both Shannon Creek and Karangi Dams and will remain in place until all quantity and quality conditions are met to allow pumping from the Orara and Nymboida Rivers to re-fill our storage dams to adequate levels.

Council is constantly monitoring quality and quantity of water in the rivers, dam levels and community water consumption. We may also consider climate forecasts to ensure lifting of water restrictions is the best option for the long-term security of our drinking water supplies to avoid situations where restrictions are re-introduced shortly after lifting them.