Karuah River and Great Lakes
Water Quality and River Flow Objectives

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This section gives the Water Quality Objectives (WQOs) and the River Flow Objectives (RFOs) for the Karuah River and Great Lakes catchments, which should be used in developing plans and actions affecting river health. Only the priority RFOs are listed in this section but the remaining objectives need to be considered when developing flow management plans or dealing with particular local river conditions.

Town water supply subcatchments

The streams in town water supply subcatchments or groundwater aquifers typically feed into a town's water supply storage. In many cases the catchment may be declared as specially protected to minimise the land use impacts on water quality.

Map: The objectives apply to streams and major aquifers in areas coloured light blue on the map.

Top of PageWater Quality Objectives

Protection of:

Aquatic ecosystems

Visual amenity

Drinking water-Groundwater

Top of PageRiver Flow Objectives

Manage groundwater for ecosystems

Supporting information

Mainly forested areas

Streams in mainly forested areas are often valued for their conservation or recreational values. They often have relatively natural flows and water quality. Many are in national parks or state forests.

Map: The objectives apply to streams running through areas coloured green on the map (state forests, national parks and nature reserves); and through other forested areas, if any are defined locally.

Top of PageWater Quality Objectives

Protection of:

Aquatic ecosystems

Visual amenity

Secondary contact recreation

Primary contact recreation

Drinking water at point of supply-Disinfection only

Drinking water at point of supply-Clarification and disinfection

Drinking water at point of supply-Groundwater

Aquatic foods (cooked)

Top of PageRiver Flow Objectives

Protect pools in dry times

Protect natural low flows

Maintain wetland and floodplain inundation

Maintain natural flow variability

Manage groundwater for ecosystems

Minimise effects of weirs and other structures

Supporting information

Waterways affected by urban development

These are streams within urban areas that are frequently substantially modified and carry poor quality stormwater. Local communities are often keen to see such streams returned to more natural conditions.

Map: These areas are shown in orange on the map.

Top of PageWater Quality Objectives

Protection of:

Aquatic ecosystems

Visual amenity

Secondary contact recreation, as a short-term objective, within 5 years

Primary contact recreation: assess opportunities to achieve as a longer term objective, 10 years or more

Top of PageRiver Flow Objectives

Mimic natural drying in temporary waterways

Maintain natural flow variability

Maintain natural rates of change in water levels

Manage groundwater for ecosystems

Minimise effects of weirs and other structures

Supporting information

Uncontrolled streams

These uncontrolled streams and waterbodies are not in estuaries or the other categories. Their flow patterns are largely natural but may have been altered to a limited degree.

Map: Uncontrolled streams are shown as blue lines on the map.

Top of PageWater Quality Objectives

Protection of:

Aquatic ecosystems

Visual amenity

Secondary contact recreation

Primary contact recreation

Livestock water supply

Irrigation water supply

Homestead water supply

Drinking water at point of supply-Disinfection only

Drinking water at point of supply-Clarification and disinfection

Drinking water at point of supply-Groundwater

Aquatic foods (cooked)

Top of PageRiver Flow Objectives

Protect pools in dry times

Protect natural low flows

Protect important rises in water levels

Maintain wetland and floodplain inundation

Mimic natural drying in temporary waterways

Maintain natural flow variability

Manage groundwater for ecosystems

Minimise effects of weirs and other structures

Supporting information

Estuaries

Being dominated by saline conditions, estuaries have hydraulic and water quality characteristics, and potential problems, that are often very different from those of freshwater systems.

Map: Estuaries are coloured purple on the map.

Top of PageWater Quality Objectives

Protection of:

Aquatic ecosystems

Visual amenity

Secondary contact recreation

Primary contact recreation

Aquatic foods (cooked) and commercial shellfish production

Top of PageRiver Flow Objectives

Maintain wetland and floodplain inundation

Maintain natural flow variability

Manage groundwater for ecosystems

Minimise effects of weirs and other structures

Maintain or rehabilitate estuarine processes and habitats

Supporting information

This page was published 1 May 2006

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