Molonglo Catchment Health
information for the catchment is available from numerous sources for some sites,
however collection methods are not uniform. The Molonglo Catchment Group
recognises that establishing ‘baseline
measurements’ to assess sub-catchment health goes far beyond just
collecting and analysing water quality data. The MCG is committed to developing
a catchment health monitoring program that will assist to monitor the
effectiveness of the Molonglo Catchment Strategy.
Catchment Health Indicators Program (M-CHIP) utilises and builds on existing
data sources and community based resource assessment techniques, to enable
informed decisions and a framework for future catchment health monitoring.
Assessing sub-catchment (and ultimately whole catchment) health in this manner:
helps to educate the community on catchment processes;
facilitates targeted investment on a catchment scale;
raises awareness of water related NRM issues; and
greatly improves the link between information gathering,
analysis and on-ground application.
The M-CHIP has
been designed to ensure that output data is consistent with regionally focused
monitoring programs to facilitate data sharing with State/Territory and regional
programs. M-CHIP draws data from 13 existing and 23 newly established water
quality monitoring sites within the catchment.
integrates continuous water quality data, annual macro-invertebrate survey
results and a once off desk-top ‘GIS’ audit of the catchment’s natural features.
data and assessments are fed in to a model to gauge a level of sub-catchment
health (See diagram below). Results
are used to produce a series of Sub-catchment Health maps which are used to
benchmark catchment health and (coupled with assessment of performance
indicators) monitor the overall effectiveness of the MCS.
To enable the Molonglo Catchment Group to recognise
significant short-term pollution events and identify the causes or sources
of pollution, so that the appropriate authority may be notified in a timely
manner. Pollutants of particular relevance are those associated with:
stormwater runoff and erosion;
general litter and dumping of rubbish; and
accidental spills or improper disposal of toxic
Monitor and evaluate the impact of projects undertaken by the
Group and its members.
Identify currently degraded areas and long-term degradation
in the Molonglo Catchment, with respect to:
To provide a measure of biological health of the stream, at
key sites in the Molonglo Catchment, by monitoring:
Collect baseline data at the bottom of Sub-catchment sites
throughout the Molonglo Catchment to establish sediment and salinity exports
To provide turbidity measurements during Storm Events at key
sites in the Molonglo Catchment.
To provide baseline data at key sites in the Molonglo
Catchment by monitoring:
To provide supporting data at 24 sites throughout the
Molonglo Catchment by monitoring:
The M-CHIP will
assist the catchment group to assess:
What impact(s) has catchment group activities had on:
physical - chemical water quality, particularly dissolved
oxygen and turbidity?
biodiversity - macro-invertebrates?
Where are the major sources of sediment in the catchment?
Where are the major sources of litter in the catchment?
Which areas in the catchment are most in need of weeding /
erosion control / revegetation efforts?
How effective are the on-ground works of the Molonglo
Catchment Group and member groups?
M-CHiP Methodology Diagram