13.2 The Wallis Lake Estuary Management Committee - Great Lakes ...

Wallis Lake Estuary Management Plan
Strategy/Outcome Actions Monitoring and performance indicator Data interpretation Target Comments Progress
Determine baseline water
quality in the Wallis Lake
estuary
W.6.1
N/A
Reduce rural land use
impacts on water quality in
the Wallis Lake estuary
W.2.1,
W.2.2
Indicators to be measured include; total
nitrogen (TN), total phosphorus (TP), oxidised
nitrogen (NOx), ammonia (NH4), filterable
reactive phosphate (PO4), chlorophyll a, faecal
coliform, temperature, salinity, pH, dissolved
oxygen and turbidity. Sampling to occur at sites
identified in Fig. 4.3 during dry weather, low
flow conditions.
A pilot study should ensure that these sites are
consistent with the Australian Guidelines for
Water Quality Monitoring and Reporting
(ANZECC & ARMCANZ 2000).
Replicate samples are to be taken at each site
and processed at Forster Environmental
Laboratory.
Repeating the monitoring program developed
to establish baseline water quality conditions
on a regular basis each year would allow for
actions designed to improve water quality to be
continually and regularly assessed for their
effectiveness.
Data to be assessed
against set numerical
guidelines in the Australian
and New Zealand
guidelines for fresh and
marine water quality
(ANZECC & ARMCANZ
2000).
Data analysis to be
consistent with the study
design and to be
determined in conjunction
with site selection.
Data analysis as decided
above.
Targets to
be set once
baseline
conditions
determined
This baseline
information is
necessary to set
realistic future
water quality
targets.
Commitment to the
monitoring program
will allow for time
series analysis for
any trends ie.
improving or
deteriorating water
quality.
Regular monitoring
in urban areas
would also allow an
assessment of the
effectiveness of
actions to reduce
impacts of
stormwater on
water quality.
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