Water Electrical Conductivity (EC)

AUS-TMS-FOR-WEC General Moderate confidence

Benchmark Value

No specific value — see range
Range: 80 to 220 µS/cm
Optimal Range: 80 to 220
Direction: Lower is desirable ↓
Form: OptimalRange

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

The ANZECC (2000) guideline range of 80−220 µS/cm for lowland rivers and the NT WQO of <200 µS/cm are designed to be protective of slightly disturbed ecosystems or to maintain a high level of ecosystem health.

Metric Definition:

Optimal range of Water Electrical Conductivity (EC) supporting healthy aquatic ecosystems in tropical monsoonal savannas.

Benchmark Definition:

This benchmark represents the optimal range of Water Electrical Conductivity (EC) values that support healthy aquatic ecosystems in tropical monsoonal savannas under production forestry.

Justification:

Derived from national guidelines and supported by data from minimally disturbed reference systems like the Daly River.

Sources (1)

Preview of Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000), accessed May 11, 2025,
Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000), accessed May 11, 2025, Journal

Northern Territory Government (2020) Darwin Harbour Region Water Quality Objectives, Report Card Section 3.0.

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Supporting Sources (16)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Discharge-driven seasonal pattern of ionic solutes, suspended sediment and water clarity for a tropical savanna river in northern Australia - ResearchGate, accessed May 14, 2025,
(PDF) Discharge-driven seasonal pattern of ionic solutes, suspended sediment and water clarity for a tropical savanna river in northern Australia - ResearchGate, accessed May 14, 2025,
Contextual Support GreyLiterature

Environmental Water Requirements of Vallisneria nana in the Daly River, Northern Territory1 | Request PDF - ResearchGate

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Preview of A longitudinal survey of the water quality of the ... - Territory Stories
A longitudinal survey of the water quality of the ... - Territory Stories
Contextual Support Journal

A longitudinal survey of the water quality of the ... - Territory Stories

View Source
Preview of Australian and New Zealand Guidelines for Fresh and Marine Water ...
Australian and New Zealand Guidelines for Fresh and Marine Water ...
Contextual Support Journal

Australian and New Zealand Guidelines for Fresh and Marine Water ...

View Source
Preview of Conservation Management Zones of Australia - North ... - DCCEEW, accessed May 20, 2025,
Conservation Management Zones of Australia - North ... - DCCEEW, accessed May 20, 2025,
Contextual Support Methodology Source Journal

Quantifying interception associated with large-scale plantation forestry in the Northern Territory - Resilient Landscapes Hub

View Source
Preview of Deriving guideline values using reference-site data - Water Quality Australia, accessed August 12, 2025
Deriving guideline values using reference-site data - Water Quality Australia, accessed August 12, 2025
Contextual Support Methodology Source Government

Water Quality Guidelines Home - Water Quality Australia

View Source
Preview of Diatom–water quality thresholds in South Australian streams indicate a need for more stringent water quality guidelines | Request PDF - ResearchGate, accessed May 11, 2025,
Diatom–water quality thresholds in South Australian streams indicate a need for more stringent water quality guidelines | Request PDF - ResearchGate, accessed May 11, 2025,
Contextual Support GreyLiterature

Validating species sensitivity distributions using salinity tolerance of riverine macroinvertebrates in the southern Murray–Darling Basin (Victoria, Australia) - Canadian Science Publishing

View Source
Preview of Discharge-driven seasonal pattern of ionic solutes, suspended sediment and water clarity for a tropical savanna river in northern Australia - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 24, 2025
Discharge-driven seasonal pattern of ionic solutes, suspended sediment and water clarity for a tropical savanna river in northern Australia - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 24, 2025
Contextual Support Direct Evidence Journal

Marine and Freshwater Research - CSIRO PUBLISHING

View Source
Preview of Dry-season changes in macroinvertebrate assemblages of highly seasonal rivers - Griffith Research Online
Dry-season changes in macroinvertebrate assemblages of highly seasonal rivers - Griffith Research Online
Contextual Support

Dry-season changes in macroinvertebrate assemblages of highly seasonal rivers - Griffith Research Online

View Source
Preview of environment.nt.gov.au, accessed May 11, 2025,
environment.nt.gov.au, accessed May 11, 2025,
Contextual Support Direct Evidence Journal

Water Quality objectives for the region - Department of Lands, Planning and Environment

View Source
Preview of Environmental Values, Water Quality Objectives and Targets for the Black Ross Water Quality Improvement Plan - Creek to Coral
Environmental Values, Water Quality Objectives and Targets for the Black Ross Water Quality Improvement Plan - Creek to Coral
Contextual Support Journal

Environmental Values, Water Quality Objectives and Targets for the Black Ross Water Quality Improvement Plan - Creek to Coral

View Source
Preview of fwpa.com.au, accessed May 15, 2025
fwpa.com.au, accessed May 15, 2025
Contextual Support Journal

Defining deforestation free supply chains for red meat products

View Source
Preview of Impact of secondary salinisation on freshwater ecosystems: effects of contrasting, experimental, short-term releases of saline wastewater on macroinvertebrates in a lowland stream - CSIRO Publishing, accessed August 8, 2025,
Impact of secondary salinisation on freshwater ecosystems: effects of contrasting, experimental, short-term releases of saline wastewater on macroinvertebrates in a lowland stream - CSIRO Publishing, accessed August 8, 2025,
Contextual Support Government

Comparison of two commonly used methods for identifying water quality thresholds in freshwater ecosystems using field and synthetic data - PubMed

View Source
Preview of The impact of fire on riparian vegetation in Australia's tropical savanna - ResearchGate, accessed May 17, 2025,
The impact of fire on riparian vegetation in Australia's tropical savanna - ResearchGate, accessed May 17, 2025,
Contextual Support GreyLiterature

Bird distribution in riparian vegetation in the extensive natural landscape of Australia's tropical Savanna: a broad-scale survey and analysis of a distributional data base - ResearchGate

View Source
Preview of Water quality | Australia state of the environment 2021
Water quality | Australia state of the environment 2021
Contextual Support Journal

Water quality | Australia state of the environment 2021

View Source
Preview of Water quality | Australia state of the environment 2021, accessed August 11, 2025,
Water quality | Australia state of the environment 2021, accessed August 11, 2025,
Contextual Support Government

Drivers of water quality in Afromontane-savanna rivers - Frontiers

View Source
Preview of Water quality guidelines - Queensland Environment Department, accessed August 1, 2025,
Water quality guidelines - Queensland Environment Department, accessed August 1, 2025,
Contextual Support Government

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000)

View Source

Context

  • Region Australia
  • Biome Tropical Monsoonal Savannas
  • Land Use Production Forestry
  • Assessment Not Stated
  • Season Wet season and transitional flow periods
  • Evidence Type HealthyOperationalRange

Lifecycle

  • Status Active
  • Version 1
  • Effective From 10 Jun 2026

Notes

This range reflects conditions during biologically active periods with significant surface water contributions. Management should aim to maintain EC within this range during these periods. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

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

220 µS/cm Moderate
Production Forestry · Not Stated
MaximumOnly Active v1
— µS/cm Moderate
Production Forestry · Not Stated
CompositeFramework Active v1