Water Electrical Conductivity (EC)

AUS-AIF-FOR-WEC General Moderate confidence

Benchmark Value

800 μS/cm

Thresholds: Lower: —, Upper: 800

Direction: Lower is desirable ↓

Form: MaximumOnly

Scoring Curve

This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 11 benchmarks together — the OptimalRange form drives the primary score, while 10 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

The MDBA's Basin Salinity Management 2030 strategy explicitly defines water with a salinity level below 800 ³S/cm as having "low salinity".

Metric Definition:

Water Electrical Conductivity (EC) as a measure of salinity in water.

Benchmark Definition:

This benchmark represents the maximum water electrical conductivity level considered to maintain a healthy, low-salinity condition in production forestry systems within the Arid Inland Floodplains & Ephemeral River Systems biome in Australia.

Justification:

The benchmark is inferred due to a lack of direct studies on production forestry in this specific biome. Confidence is 'Moderate' as the inference is based on strong, convergent evidence from established eco-hydrological principles and major government management strategies.

Sources (2)

Preview of (PDF) Effects of increasing salinity on freshwater ecosystems in ..., accessed July 20, 2025,

(PDF) Effects of increasing salinity on freshwater ecosystems in ..., accessed July 20, 2025, GreyLiterature

(PDF) Effects of increasing salinity on freshwater ecosystems in ..., accessed July 20, 2025,

Preview of Australia's forests – overview - DAFF, accessed on May 25, 2025,

Australia's forests – overview - DAFF, accessed on May 25, 2025, Government

Australia's forests - DAFF, accessed May 19, 2025

Supporting Sources (15)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Effects of increasing salinity on freshwater ecosystems in Australia - ResearchGate, accessed August 11, 2025,

(PDF) Effects of increasing salinity on freshwater ecosystems in Australia - ResearchGate, accessed August 11, 2025,

Contextual Support Journal

Effects of increasing salinity on freshwater ecosystems in Australia - ResearchGate

Preview of A review of water quality studies relevant to northern Australia - CSIRO, accessed July 21, 2025,

A review of water quality studies relevant to northern Australia - CSIRO, accessed July 21, 2025,

Contextual Support Journal

Salinity and water quality

Preview of About the Lake Eyre Basin - DCCEEW, accessed July 20, 2025,

About the Lake Eyre Basin - DCCEEW, accessed July 20, 2025,

Contextual Support Government

About the Lake Eyre Basin - DCCEEW, accessed July 20, 2025,

Preview of Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000) - Volume 3 - Chapter 9 - Primary Industries, accessed July 20, 2025,

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000) - Volume 3 - Chapter 9 - Primary Industries, accessed July 20, 2025,

Contextual Support Journal

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000) - Volume 3 - Chapter 9 - Primary Industries, accessed July 20, 2025,

Preview of Australian Native Forests and Water IFA Forestry Policy Statement 5.1, accessed August 10, 2025,

Australian Native Forests and Water IFA Forestry Policy Statement 5.1, accessed August 10, 2025,

Contextual Support Journal

Quantifying the water quality benefits of forests - Healthy Land & Water, accessed July 20, 2025,

Preview of Conductivity, TDS, Salinity, Resistivity - apera instruments, accessed July 20, 2025,

Conductivity, TDS, Salinity, Resistivity - apera instruments, accessed July 20, 2025,

Contextual Support Journal

Geological Control upon Groundwater Flow and Major Ion Chemistry with Influence on Basin Management in a Coastal Aquifer, South Australia - Scientific Research Publishing, accessed July 27, 2025,

Preview of Ecological condition of central Australian arid-zone rivers - PubMed, accessed July 21, 2025

Ecological condition of central Australian arid-zone rivers - PubMed, accessed July 21, 2025

Contextual Support Journal

Ecological condition of central Australian arid-zone rivers - PubMed

Preview of ECOLOGICALLY SUSTAINABLE FOREST MANAGEMENT - Forestry Australia, accessed August 10, 2025,

ECOLOGICALLY SUSTAINABLE FOREST MANAGEMENT - Forestry Australia, accessed August 10, 2025,

Contextual Support Journal

guidelines for sustainable forestry on private lands ... - ResearchGate, accessed July 31, 2025

Preview of Forests and Water - Food and Agriculture Organization of the United Nations, accessed July 20, 2025,

Forests and Water - Food and Agriculture Organization of the United Nations, accessed July 20, 2025,

Contextual Support Journal

Forests and Water - Food and Agriculture Organization of the United Nations, accessed July 20, 2025,

Preview of Inland waters - CSIRO Publishing, accessed July 20, 2025

Inland waters - CSIRO Publishing, accessed July 20, 2025

Contextual Support GreyLiterature

Inland waters - CSIRO Publishing, accessed July 20, 2025,

Jonathan MARSHALL | Queensland Government, Brisbane | Department of Environment and Science | Research profile - ResearchGate, accessed July 20, 2025,

Contextual Support GreyLiterature

Jonathan MARSHALL | Queensland Government, Brisbane | Department of Environment and Science | Research profile - ResearchGate, accessed July 20, 2025,

Preview of Measuring salinity - Department of Environment, Water and Natural - Landscape SA, accessed July 20, 2025,

Measuring salinity - Department of Environment, Water and Natural - Landscape SA, accessed July 20, 2025,

Methodology Source Government

Measuring salinity - Department of Environment, Water and Natural - Landscape SA, accessed July 20, 2025,

Preview of Rehabilitation of disturbed land in public drinking water source areas - Government of Western Australia, accessed July 20, 2025,

Rehabilitation of disturbed land in public drinking water source areas - Government of Western Australia, accessed July 20, 2025,

Contextual Support Government

Rehabilitation of disturbed land in public drinking water source areas - Government of Western Australia, accessed July 20, 2025,

Preview of Resilience of floodplain ecosystems in a semi-arid environment - CSIRO Publishing, accessed July 20, 2025,

Resilience of floodplain ecosystems in a semi-arid environment - CSIRO Publishing, accessed July 20, 2025,

Contextual Support Journal

Creating a sustainable Murray-Darling - The Nature Conservancy Australia, accessed July 20, 2025,

Preview of Salinity and water quality, accessed July 20, 2025,

Salinity and water quality, accessed July 20, 2025,

Contextual Support

Salinity and water quality, accessed July 20, 2025,

Context

Region Australia
Biome Arid Inland Floodplains & Ephemeral River Systems
Land Use Production Forestry
Assessment Pristine Reference
Evidence Type TargetCondition

Lifecycle

Status Active
Version 1
Effective From 19 Mar 2026

Notes

The value of <800 μS/cm is the Murray-Darling Basin Authority's target for "low salinity" water, representing a high-health state achievable through best-practice land management that prevents secondary salinization. This benchmark sits well within the optimal range for ecosystem health. Lower Critical Threshold: Not ecologically applicable for freshwater systems; lower EC indicates better health. Optimal Range: < 800 μS/cm, which maintains a healthy buffer from stress thresholds. Upper Detrimental Threshold: A threshold of ~1500 μS/cm is identified from scientific literature, above which significant adverse effects on sensitive aquatic biota are observed, representing a shift to a degraded state.

Related Benchmarks

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