Water Turbidity

AUS-AMR-URB-WTU General Moderate confidence

Benchmark Value

No specific value — see range

Range: 0 to 10 NTU

Optimal Range: 0 to 10

Direction: Lower is desirable ↓

Form: OptimalRange

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 13 benchmarks together — the OptimalRange form drives the primary score, while 12 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

Reference Value: < 10 NTU (with < 5 NTU representing best-on-offer)

Metric Definition:

Water Turbidity

Benchmark Definition:

This benchmark defines the best available condition for water turbidity in surface waters of urbanized catchments within Australia's Arid Mountain Ranges & Uplands biome, indicating water clarity with suspended particles.

Justification:

The benchmark is derived from national guidelines and regional proxy data due to the absence of direct surface water measurements from a site perfectly matching the specified biome and land use context.

Sources (1)

Preview of Alice Springs water assessment report - Territory Stories, accessed July 21, 2025,

Alice Springs water assessment report - Territory Stories, accessed July 21, 2025, Government

Synthesis of ANZECC (2000) Guidelines and regional data from the Alice Springs Water Assessment Report (NT DPL, 2025)

View Source

Supporting Sources (37)

Additional references from the underlying research that informed this benchmark.

3. Todd River - Hydrology and Water Resources Research Laboratory, Kyoto University (Japanese), accessed August 1, 2025,

Contextual Support Journal

3. Todd River - Hydrology and Water Resources Research Laboratory, Kyoto University (Japanese), accessed August 1, 2025,

View Source

A BIOLOGICAL SURVEY OF THE FLINDERS RANGES SOUTH AUSTRALIA - Enviro Data SA

Contextual Support Journal

A BIOLOGICAL SURVEY OF THE FLINDERS RANGES SOUTH AUSTRALIA - Enviro Data SA, accessed July 28, 2025

View Source

ALICE SPRINGS TOWN COUNCIL SUBDIVISION AND DEVELOPMENT REQUIREMENTS Version 2 - August 2018 - AWS, accessed August 1, 2025,

Contextual Support

ALICE SPRINGS TOWN COUNCIL SUBDIVISION AND DEVELOPMENT REQUIREMENTS Version 2 - August 2018 - AWS, accessed August 1, 2025,

View Source

Alice Springs water assessment report - Territory Stories, accessed August 1, 2025,

Contextual Support GreyLiterature

Flood, Alice Springs and Central Northern Territory - Australian Disaster Resilience Knowledge Hub, accessed August 1, 2025,

View Source

Preview of An environmental flow to an ephemeral creek increases the input of carbon and nutrients to a downstream receiving river - Frontiers, accessed July 20, 2025

An environmental flow to an ephemeral creek increases the input of carbon and nutrients to a downstream receiving river - Frontiers, accessed July 20, 2025

Contextual Support Government

An environmental flow to an ephemeral creek increases the input of carbon and nutrients to a downstream receiving river - Frontiers, accessed July 20, 2025

View Source

Annual Drinking Water Quality Report 2023, accessed July 21, 2025

Contextual Support Journal

Annual Drinking Water Quality Report 2023, accessed August 1, 2025,

View Source

Arid Swamps | WetlandInfo, accessed August 1, 2025,

Contextual Support Journal

Arid Swamps | WetlandInfo

View Source

Australian Drinking Water Guidelines Resources - NHMRC, accessed August 1, 2025,

Irrelevant Government

Australian Drinking Water Guidelines Resources - NHMRC, accessed August 1, 2025,

View Source

Chapter 5: Water quality - CSIRO, accessed July 21, 2025

Contextual Support Government

Eutrophication (nutrient enrichment) - Government of Western Australia

View Source

Characterising the relationship between water quality and water quantity, accessed August 5, 2025

Contextual Support Journal

Turbidity | Australia state of the environment 2021

View Source

Preview of Diverse invertebrate fauna using dry sediment as a refuge in semi-arid and temperate Australian rivers | Request PDF - ResearchGate, accessed August 1, 2025,

Diverse invertebrate fauna using dry sediment as a refuge in semi-arid and temperate Australian rivers | Request PDF - ResearchGate, accessed August 1, 2025,

Contextual Support Journal

Diverse invertebrate fauna using dry sediment as a refuge in semi-arid and temperate Australian rivers | Request PDF - ResearchGate, accessed August 1, 2025,

View Source

Guidance document for assessing and managing water quality in temporary waters, accessed July 16, 2025,

Contextual Support Journal

Guidance document for assessing and managing water quality in temporary waters, accessed July 10, 2025,

View Source

National Guidelines for Water Quality - Department of Natural Resources and Environment Tasmania, accessed August 1, 2025,

Contextual Support

Using the ANZECC Guidelines and Water Quality Objectives in NSW

View Source

One-way ANOVA summary for differences in water quality and aquatic... - ResearchGate, accessed August 1, 2025,

Contextual Support Journal

One-way ANOVA summary for differences in water quality and aquatic... - ResearchGate, accessed August 1, 2025,

View Source

Preview of Persistence of in-stream waterholes in ephemeral rivers of tropical northern Australia and potential impacts of climate change - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 18, 2025,

Persistence of in-stream waterholes in ephemeral rivers of tropical northern Australia and potential impacts of climate change - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 18, 2025,

Contextual Support Journal

Persistence of in-stream waterholes in ephemeral rivers of tropical northern Australia and potential impacts of climate change - CSIRO PUBLISHING | Marine and Freshwater Research

View Source

Preview of Preliminary information for developing sediment guidelines for streams of the West Coast, New Zealand - Envirolink, accessed August 17, 2025,

Preliminary information for developing sediment guidelines for streams of the West Coast, New Zealand - Envirolink, accessed August 17, 2025,

Contextual Support Journal

Preliminary information for developing sediment guidelines for streams of the West Coast, New Zealand - Envirolink, accessed August 1, 2025,

View Source

Quantifying Health in Ephemeral Rivers - eWater, accessed July 20, 2025,

Contextual Support Journal

Quantifying Health in Ephemeral Rivers - eWater

View Source

Queensland Murray-Darling Freshwater Biogeographic Province 6 Water quality - WetlandInfo, accessed July 16, 2025,

Contextual Support Government

Review of the current state of knowledge for the monitoring of forestry impacts on waterway health in NSW coastal forests, accessed July 31, 2025,

View Source

SL314/SS526: Water Quality Notes: Water Clarity (Turbidity, Suspended Solids, and Color) - UF/IFAS EDIS, accessed August 12, 2025,

Contextual Support GreyLiterature

SL314/SS526: Water Quality Notes: Water Clarity (Turbidity, Suspended Solids, and Color) - UF/IFAS EDIS, accessed August 12, 2025

View Source

State of the Environment 2023 | Water Supply, accessed August 1, 2025,

Contextual Support Government

State of the Environment 2023 | Water Supply, accessed August 1, 2025,

View Source

Synthesis of ANZECC (2000) Guidelines and regional data from the Alice Springs Water Assessment Report (NT DPL, 2025)

Regulatory Framework Government

Alice Springs water allocation plan | NT.GOV.AU, accessed August 1, 2025,

View Source

Targets for Urban Stormwater Management in Australia - MDPI, accessed July 21, 2025

Contextual Support Journal

Targets for Urban Stormwater Management in Australia - MDPI, accessed July 21, 2025

View Source

The Australian Outback: Geography, Map, & People - Students of History, accessed August 1, 2025,

Contextual Support GreyLiterature

The Australian Outback: Geography, Map, & People - Students of History, accessed August 1, 2025,

View Source

Preview of The Ecological and Hydrological Significance of Ephemeral and Intermittent Streams in the Arid and Semi-arid American Southwest - Environmental Protection Agency (EPA)

The Ecological and Hydrological Significance of Ephemeral and Intermittent Streams in the Arid and Semi-arid American Southwest - Environmental Protection Agency (EPA)

Contextual Support Journal

The Phosphorus Buffering Index – What Does it Mean for Your Soil? - Summit Fertilizers

View Source

The impact of feral camels (Camelus dromedarius) on remote waterholes in central Australia, accessed August 1, 2025,

Contextual Support Journal

The impact of camel visitation on native wildlife at remote waterholes in arid Australia, accessed July 25, 2025,

View Source

Preview of The terrestrial and semi‐aquatic invertebrates of intermittent rivers and ephemeral streams - PMC - PubMed Central, accessed August 1, 2025,

The terrestrial and semi‐aquatic invertebrates of intermittent rivers and ephemeral streams - PMC - PubMed Central, accessed August 1, 2025,

Contextual Support Journal

Fishes in the forest: High biodiversity and endemism, accessed July 24, 2025,

View Source

Turbidity | Australian Drinking Water Guidelines - NHMRC, accessed August 11, 2025,

Contextual Support Government

Turbidity | Australian Drinking Water Guidelines - NHMRC, accessed August 3, 2025

View Source

Urban stormwater quality - Queensland Environment Department, accessed August 2, 2025,

Contextual Support Government

Urban stormwater quality - Queensland Environment Department, accessed August 1, 2025,

View Source

Urban Stormwater: Best Practice Environmental Management Guidelines. - CSIRO Publishing, accessed July 21, 2025

Contextual Support GreyLiterature

Chapter 5: Water quality - CSIRO

View Source

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

Water Quality Objectives - Border Rivers - NSW Government, accessed August 12, 2025

Contextual Support Government

(PDF) Impact of mitigated forestry activities on turbidity: assessing ...

View Source

Water quality of surface water environments - NSW Government Water, accessed August 1, 2025,

Contextual Support Government

National Guidelines for Water Quality | Department of Natural ...

View Source

Water Sensitive Urban Design - Townsville City Council, accessed August 2, 2025,

Contextual Support Journal

Human society and wellbeing | Australia state of the environment 2021

View Source

Water Sensitive Urban Design Guidelines - Melbourne Water, accessed July 21, 2025,

Contextual Support Journal

Section 13 – Water Sensitive Urban Design (WSUD) Guidelines - City of Gold Coast, accessed July 13, 2025

View Source

Water Sensitive Urban Design Guidelines Wollondilly Shire Council, accessed August 11, 2025,

Contextual Support

Water Sensitive Urban Design Guidelines Wollondilly Shire Council

View Source

Preview of Water Sensitive Urban Design: An Investigation of Current Systems, Implementation Drivers, Community Perceptions and Potential to Supplement Urban Water Services - MDPI, accessed August 1, 2025,

Water Sensitive Urban Design: An Investigation of Current Systems, Implementation Drivers, Community Perceptions and Potential to Supplement Urban Water Services - MDPI, accessed August 1, 2025,

Contextual Support Journal

Water Sensitive Urban Design: An Investigation of Current Systems, Implementation Drivers, Community Perceptions and Potential to Supplement Urban Water Services - MDPI, accessed August 1, 2025,

View Source

Why Measure Turbidity? - Montclair State University, accessed August 12, 2025,

Contextual Support GreyLiterature

Why Measure Turbidity? - Montclair State University, accessed July 31, 2025,

View Source

Context

Region Australia
Biome Arid Mountain Ranges & Uplands
Land Use Urban & Developed Use
Assessment Not Stated
Evidence Type ReferenceCondition

Lifecycle

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

Notes

No upper detrimental threshold — higher values are always worse. The reference value represents the best available condition for turbidity during low-flow or inter-event periods in receiving water bodies within an urban catchment managed with best-practice Water Sensitive Urban Design (WSUD). It does not apply to natural, high-turbidity flood pulses. The ecosystem's health is defined by its ability to return to this clear-water state. AssessmentContext defaulted to 'Not Stated' because the source document did not state one. Pipeline correction 2026-06-03c: Rejected — Rule C violation (OptimalRange sentinel-zero). Correct form MaximumOnly(10 NTU). MaximumOnly slot occupied by ID 1368 (5 NTU). Requires StratificationKey (e.g., '10-NTU-reference-ceiling') to coexist. Requeue document with prompt v3.7.

Related Benchmarks

Other benchmarks in the AUS-AMR-URB-WTU family.