 Introduction
The Angas River is a brackish stream that flows through a predominantly
pastoral landscape. Its catchment is mainly used for cattle and
sheep grazing as well as some intensive livestock industries.
Very little of the catchment has native vegetation coverage. Elevated
turbidity and nutrient levels are the most likely water quality
problems. Its headwaters are near Mt Barker and it discharges
into Lake Alexandrina near Milang. Information on rainfall and
stream flow for this catchment is available from the Department
of Water, Land and Biodiversity Conservation at two sites:
Angas
Weir and Angas
Plains.
>> Map (803KB
PDF)
Water quality assessment
Water quality is assessed as being in good, moderate or poor
condition by interpreting water chemistry data in the context
of protecting environmental values. Water chemistry is measured
each month. >> More
Water chemistry is measured each month. We measure chemical indicators
because when they reach a certain level they can cause stress
or toxicity to animals and plants in an ecosystem. Some indicators
can also indicate if the water is suitable for drinking water
or for activities such as swimming.
Water chemistry
The indicators that are measured in the Angas River are nutrients
(nitrogen and phosphorus), turbidity and salinity.
The concentrations of these indicators are used to classify the
water chemistry as being in good,
moderate or poor
condition, according to the needs of aquatic ecosystem protection.
Go here
to find out how we organise and classify the chemistry data.
Water chemistry classification for April to September 2006
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