Why do we monitor waterways?
Council regularly monitors water quality and the ecological
health of waterways throughout the region as part of the Stream
Health Monitoring Program. Waterway monitoring is an integral part
of Council's Total Water Cycle Management Plan and informs water
quality guidelines and objectives.
Waterway monitoring data is used by Council to:
- Improve water quality and stream health
- Maintain aquatic biodiversity
- Protect waterways of high ecological value
- Sustainably manage public water resources
- Make effective management decisions
- Reduce the number of pollution hot spots
- Limit land use changes that impact significantly on streams,
including erosion, siltation, and the impact of pollutants
There are no natural freshwater lakes in the region. The
reservoirs at Lake Kurwongbah and Lake Samsonvale are monitored by
Stream Health Monitoring Program
More than 1,000 kilometres of freshwater streams are monitored
at over 160 sites on a four-yearly cycle.
What is monitored?
Freshwater streams are diverse ecosystems governed by complex
biological, chemical and physical processes. Consequently, several
complementary indicators are required to assess the overall
ecological health of a stream, including biological indicators and
macroinvertebrates are excellent indicators of stream
health. Council surveys the types of species that are present and
their relative density, and records whether a stream has rare and
locally significant macroinvertebrate species of high biodiversity
Physical and chemical indicators of waterway health include the
concentration of suspended solids and nutrients such as nitrogen
and phosphorus. Council measures the concentration of substances
and contaminants (if present) in the water at the time of
Mapping stream health
Freshwater stream health throughout the region is shown in the
Freshwater Stream Health Map [PDF 1.2MB]
The 2031 target for freshwater stream health throughout the
region is shown in the Target Freshwater Stream Health Map [PDF 840KB]
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