Water Electrical Conductivity (EC)

AUS-ASC-FOR-WEC General Moderate confidence

Benchmark Value

60 µS/cm

Direction: Lower is desirable ↓

Form: MaximumOnly

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is CompositeFramework, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.

Contributing Benchmarks

CompositeFramework Primary OptimalRange Guard MaximumOnly Guard MaximumOnly Guard OptimalRange Guard MaximumOnly Guard OptimalRange Guard OptimalRange Guard MaximumOnly Guard MinimumOnly Guard MaximumOnly Guard OptimalRange Guard

Evidence & Context

Levels approaching or exceeding approximately 60 µS/cm could signify emerging detrimental impacts on sensitive species or alterations to community composition.

Metric Definition:

Water Electrical Conductivity (EC) in stream water, measuring total concentration of dissolved ionic salts.

Benchmark Definition:

This benchmark sets the maximum electrical conductivity level above which emerging ecological harm is indicated in alpine streams.

Justification:

Evidence from de-icing salt impacts shows ecological harm emerging at EC levels near 60 µS/cm in alpine streams.

Sources (1)

Salinity - Murray–Darling Basin Authority, accessed August 11, 2025, Government

Salinity | Murray–Darling Basin Authority

View Source

Supporting Sources (7)

Additional references from the underlying research that informed this benchmark.

Australia's forests – overview - DAFF, accessed August 5, 2025,

Contextual Support Government

Eastern Australian Temperate Forests | One Earth, accessed April 29, 2025,

View Source

Australia's State of the Forests Report 2018 - DAFF

Contextual Support Journal

ACTIVE MANAGEMENT AND RESEARCH FOR THE ...

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Australian Heritage Database - DCCEEW, accessed on May 25, 2025,

Contextual Support Journal

Australian Heritage Database - DCCEEW

View Source

Best Management Practices for Forest Bioenergy Programs | Request PDF - ResearchGate

Contextual Support

Best Management Practices for Forest Bioenergy Programs | Request PDF - ResearchGate

View Source

The Effects of Road De-icing Salts on Water Quality and ..., accessed August 17, 2025,

Direct Evidence Regulatory Framework Journal

The Effects of Road De-icing Salts on Water Quality and Macroinvertebrates in Australian Alpine Areas, accessed on May 29, 2025

View Source

The impact of forestry as a land use on water quality outcomes: An integrated analysis

Contextual Support GreyLiterature

The impact of forestry as a land use on water quality outcomes: An integrated analysis

View Source

www.environment.nsw.gov.au, accessed on May 25, 2025,

Direct Evidence

The Australian Alps Bioregion - Environment and Heritage, accessed on May 27, 2025,

View Source

Context

Region Australia
Biome Alpine and Subalpine Complex
Land Use Production Forestry
Assessment Not Stated
Evidence Type DegradationThreshold

Lifecycle

Status Superseded
Version 1
Effective From 3 Jun 2026
Effective To 3 Jun 2026

Notes

EC values near or above 60 µS/cm indicate emerging detrimental ecological effects. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-ASC-FOR-WEC family.