The ACT Government manages the pressures affecting water in the ACT in a variety of ways, which are examined in detail in Chapter 10. Particular features of water management and responses from the reporting period are included in this section.
6.4.1 Legal and policy framework
At the beginning of the reporting period, the 2004 water resource strategy, Think water, act water,58 remained in place. This strategy, which came into operation during the 2000–2010 drought, focused on increasing the efficiency of water use, providing long-term reliable sources of water for the ACT and region, and promoting development and implementation of an integrated approach to ACT–NSW cross-border water supply and management.
A 2011 review of the Think water, act water strategy59 found that significant achievements had been made towards the strategy’s objectives, including:
- achievement of its water use reduction targets
- development of expanded storage capacity with an enlarged Cotter Dam
- implementation of agreements between the ACT, NSW and the Australian Government on cross-border water supply and management
- ratification of a cap on water extractions under the Murray–Darling Basin Agreement, with a base of 40 GL and provision for growth at 75% of the 2006–07 population base
- implementation of water-sensitive urban design rules covering all new developments and some extensions to existing dwellings
- implementation of a range of water efficiency programs in consultation with the community
- review of the environmental flow guidelines
- ongoing development of a catchment management framework to be applied to water supply, and rural and urban catchments across the ACT.
The review of Think water, act water considered that the strategy had successfully guided the ACT to improved water security, and that it was timely to explore potential new strategies for future water needs in the Territory.
In August 2014, the new strategy, ACT Water Strategy 2014–44: Striking the Balance, was released. It contains seven strategies:
- Achieve integrated catchment management across the ACT and region.
- Protect and restore aquatic ecosystems in urban and nonurban areas.
- Manage stormwater and flooding.
- Secure long-term water supplies.
- Manage and promote the sustainable use of water.
- Provide clean and safe water for the ACT.
- Engage the community on understanding and contributing to a more sustainable city.
An implementation plan for the first five years of the strategy has been published.60
6.4.2 Management of pressures
In 2011–2015, major progress was made in increasing the ACT’s water storage capacity and establishing integrated catchment management as a fundamental part of the ACT’s water cycle management.
Prospects for the improvement of water quality in the ACT region were greatly improved by the announcement of an agreement between the Australian and ACT governments in February 2014 for up to $85 million to be spent on water quality improvements under the ACT Basin Priority Project. This project focuses on six priority catchments that account for 74% of total run-off and 54% of total pollutant load in ACT waterways.61
The management effectiveness assessment for this report found that there is:
- sound knowledge about water quality and the factors that influence it
- effective planning for water in the ACT.
It noted the strong focus on healthy catchments and waterways, a sustainable water supply used efficiently and community engagement (see Case study 6.4). As noted in the assessment, the ACT Water Strategy is a key initiative in delivering positive water outcomes for the ACT, but it is too early to determine if the outputs from the strategy are reducing threats to water resources.
Case study 6.4 Community water quality monitoring – Waterwatch Catchment Health Indicator Program
Upper Murrumbidgee Waterwatch engages with the community to monitor, raise awareness and educate about, restore and protect our local waterways. A key output of this program is the annual Catchment Health Indicator Program (CHIP) report. The CHIP report provides a score of waterway health using data collected by Waterwatch volunteers. In 2013, CHIP was reviewed by the University of Canberra, and it was recommended that the data be displayed in smaller waterway sections (reaches). This allows for a finer-scale assessment of the condition of our waterways (where data exist) and highlights areas in the catchment that are currently not sampled.
How does CHIP work?
Waterwatch volunteers and coordinators collect data relating to water quality (monthly), macroinvertebrates (autumn and spring) and riparian condition (biennial). Data on riparian condition were not included in the 2013–14 report because of funding issues, but riparian condition data are currently being collected for the 2014–15 report. Data are collated for an individual reach, from which a score is calculated to indicate the health of that stretch of waterway.
2013–14 CHIP results
In 2013–14, more than 160 volunteers from four catchment areas recorded data from 1184 water quality surveys and 78 macroinvertebrate surveys across 184 sites. This sampling covered 63 reaches spread across Ginninderra (8 reaches), southern ACT (19 reaches), Cooma (15 reaches) and Molonglo (21 reaches), spanning a total catchment area of 8600 square kilometres.
A range of key issues were identified as posing threats to the health of our local waterways. High turbidity levels due to sediments entering waterways during rainfall events were observed, along with increased levels of nutrients (total phosphorus and nitrates) from both rural and urban sources. High electrical conductivity was common; however, this in part may be a result of the underlying natural geology of the catchments. There was a general trend of decreasing ecological health in the downstream reaches.
Expected outcomes of CHIP and why it is important
The CHIP approach provides a holistic indication of waterway health by using not just water quality data but other volunteer-collected data as well, such as macroinvertebrates and riparian vegetation. This fine-scale assessment should provide more meaningful indications of catchment health. All the data and reports will be available online for the community to access and understand the health of their local waterway. Information gathered by Waterwatch will be used to assist with the $85 million ACT Basin Priority Project to improve long-term water quality in the ACT and Murrumbidgee River.
Waterwatch water quality monitoring on the Murrumbidgee River. Photo: Bush Heritage