Page 323 - Week 01 - Thursday, 10 February 2022

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(3) The monitoring of Lake Tuggeranong is done by ALS on contract to the ACT Government 6-8 times year, mainly in warmer months of the year when use of the lakes is greatest. The Environment, Planning and Sustainable Development Directorate has already provided the data for the 5 years to 2020, and the latest data for 2021 are attached (Attachment A).

(A copy of the attachment is available at the Chamber Support Office).

Lake Tuggeranong—water quality
(Question No 479)

Ms Lawder asked the Minister for Water, Energy and Emissions Reduction, upon notice, on 8 October 2021:

Can the Minister outline the progress the Government has made on each recommendation from the UC Lake Tuggeranong Research Project report completed in 2020.

Mr Rattenbury: The answer to the member’s question is as follows:

The research findings from the UC Lake Tuggeranong Research Project have assisted in identifying improvements for water quality in Lake Tuggeranong.

The report made five recommendations:

1. Improve the water mass balance model for Lake Tuggeranong

2. Remote sensing of catchment to increase understanding of the run-off from sub-catchments

3. Sampling of storm events in the Lake Tuggeranong sub-catchments

4. Characterisation of nutrient export from specific surfaces, and

5. Systematic evaluation of short-term in-lake solutions

Recommendation 1

eWater has been contracted to work on the water balance of Lake Tuggeranong, linking the newly developed MUSIC X model to the ACT Source model. Completion is anticipated by June 2022.

Recommendation 2

The ACT Government recently acquired a high resolution pervious/impervious layer of the urban extent of the ACT, based on the 2020 LIDAR data acquisition. This information is being incorporated into the MUSIC X model to further refine our understanding of runoff processes in the Tuggeranong catchment.

Recommendations 3 and 4

The Government has prioritised another season of the UC research program so we can understand the ultimate source of pollutants.

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