Water Nitrate — Benchmark Detail - Nature Index

Benchmark Value

1.1 mg/L

Direction: Lower is desirable ↓

Form: UpperThreshold

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 MaximumOnly Guard OptimalRange Guard UpperThreshold Guard OptimalRange Guard MaximumOnly Guard Point Guard MaximumOnly Guard CompositeFramework Guard MaximumOnly Guard Point Guard

Evidence & Context

The Upper Detrimental Threshold, based on the draft ANZG (2024) 95% species protection guideline for soft waters, is 1.1 mg/L N.

Metric Definition:

Water nitrate concentration

Benchmark Definition:

The concentration at which there is a significant risk of adverse effects on aquatic life.

Justification:

Based on the draft ANZG (2024) 95% species protection guideline for soft waters, where exceedance indicates a high risk of chronic toxicity to aquatic ecosystems.

Sources (1)

Preview of Water quality guidelines - Queensland Environment Department, accessed August 4, 2025,

Water quality guidelines - Queensland Environment Department, accessed August 4, 2025, Journal

Seasonal changes in water quality and macrophytes and the ...

Supporting Sources (32)

Additional references from the underlying research that informed this benchmark.

Preview of and the Great Barrier Reef, accessed July 19, 2025,

and the Great Barrier Reef, accessed July 19, 2025,

Contextual Support Journal

and the Great Barrier Reef,

Preview of ANZECC & ARMCANZ (2000) guidelines - Water Quality Australia, accessed August 12, 2025

ANZECC & ARMCANZ (2000) guidelines - Water Quality Australia, accessed August 12, 2025

Contextual Support Government

ANZECC & ARMCANZ (2000) guidelines - Water Quality Australia

Preview of Australian and New Zealand guidelines for fresh and marine water quality, accessed July 19, 2025,

Australian and New Zealand guidelines for fresh and marine water quality, accessed July 19, 2025,

Direct Evidence Government

Australian Alps Liaison Committee (AALC). (2011). Caring for our Australian Alps catchments: A climate change action strategy. Department of Climate Change and Energy Efficiency.

Preview of Best management practice for maintaining and improving land condition on grazing lands, accessed July 19, 2025,

Best management practice for maintaining and improving land condition on grazing lands, accessed July 19, 2025,

Contextual Support Journal

Best management practice for maintaining and improving land condition on grazing lands,

Preview of Catchments and corals: terrestrial runoff to the Great Barrier Reef, accessed July 19, 2025,

Catchments and corals: terrestrial runoff to the Great Barrier Reef, accessed July 19, 2025,

Contextual Support Journal

Nitrate retention under sugarcane in wet tropical Queensland deep soil profiles

Preview of Daintree Basin: Wet Tropics Waterway Health, North Queensland, accessed July 19, 2025,

Daintree Basin: Wet Tropics Waterway Health, North Queensland, accessed July 19, 2025,

Contextual Support

Johnstone Freshwater Basin: Wet Tropics Waterway Health

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Digging up the dirt on water quality on the Great Barrier Reef - CSIRO, accessed July 19, 2025,

Contextual Support GreyLiterature

Digging up the dirt on water quality on the Great Barrier Reef - CSIRO, accessed July 23, 2025

Preview of Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - Bounties - ResearchHub, accessed July 19, 2025,

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - Bounties - ResearchHub, accessed July 19, 2025,

Contextual Support Journal

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - Bounties - ResearchHub

Preview of Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - CSIRO Publishing, accessed August 5, 2025,

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - CSIRO Publishing, accessed August 5, 2025,

Contextual Support Journal

Ludwig, J.A., Bastin, G.N., Chewings, V.H., Eager, R.W., and Liedloff, A.C. (2005). Clearing savannas for use as rangelands in Queensland: Altered landscapes and water-erosion processes. Rangeland Journal, 27(2), 135-149.

Preview of Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - ResearchGate, accessed July 19, 2025,

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - ResearchGate, accessed July 19, 2025,

Contextual Support Journal

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - ResearchGate, accessed July 17, 2025

Preview of Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from, accessed August 5, 2025,

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from, accessed August 5, 2025,

Contextual Support

The effect of climate change on pastoralism in the Australian arid and semi-arid rangelands - Nuffield Farming Scholarships, accessed July 29, 2025,

Preview of Effects of time-controlled grazing on runoff and sediment loss - ResearchGate, accessed July 19, 2025,

Effects of time-controlled grazing on runoff and sediment loss - ResearchGate, accessed July 19, 2025,

Contextual Support Journal

Our Plan for the Upper Herbert

Preview of Environmental Monitoring of Nitrates and Other Water Quality Parameters: pH, Dissolved Oxygen (DO), Turbidity - Hanna Instruments Australia, accessed July 19, 2025,

Environmental Monitoring of Nitrates and Other Water Quality Parameters: pH, Dissolved Oxygen (DO), Turbidity - Hanna Instruments Australia, accessed July 19, 2025,

Methodology Source GreyLiterature

Environmental Monitoring of Nitrates and Other Water Quality Parameters: pH, Dissolved Oxygen (DO), Turbidity - Hanna Instruments Australia, accessed August 11, 2025,

Preview of Great Barrier Reef Report Card 2016 Management practice methods - Reef Water Quality Protection Plan, accessed July 19, 2025,

Great Barrier Reef Report Card 2016 Management practice methods - Reef Water Quality Protection Plan, accessed July 19, 2025,

Contextual Support Journal

Best management practice for maintaining and improving land condition on grazing lands

Preview of Johnstone catchment water quality targets, accessed July 19, 2025,

Johnstone catchment water quality targets, accessed July 19, 2025,

Contextual Support Journal

Johnstone catchment water quality targets,

Preview of Johnstone Freshwater Basin: Wet Tropics Waterway Health, accessed July 19, 2025,

Johnstone Freshwater Basin: Wet Tropics Waterway Health, accessed July 19, 2025,

Contextual Support

Johnstone Freshwater Basin: Wet Tropics Waterway Health,

Preview of Johnstone River Basin Environmental Values and Water Quality ..., accessed July 27, 2025,

Johnstone River Basin Environmental Values and Water Quality ..., accessed July 27, 2025,

Direct Evidence Journal

Johnstone River Basin Environmental Values and Water Quality ...

Preview of Land management for graziers | Business Queensland, accessed August 8, 2025

Land management for graziers | Business Queensland, accessed August 8, 2025

Contextual Support Government

Managing Gully Erosion - NQ Dry Tropics

Preview of Land-based run-off - Reef Authority, accessed July 19, 2025,

Land-based run-off - Reef Authority, accessed July 19, 2025,

Contextual Support Government

Land-based run-off - Reef Authority,

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Landscape rehydration and regenerative agriculture improves soil health, accessed July 30, 2025,

Contextual Support GreyLiterature

Soil Health and Regenerative Agriculture - Southern Queensland Landscapes, accessed July 27, 2025,

Preview of Managing riparian lands to improve water quality: optimising nitrate removal via denitrification - CSIRO Research Publications Repository, accessed July 19, 2025,

Managing riparian lands to improve water quality: optimising nitrate removal via denitrification - CSIRO Research Publications Repository, accessed July 19, 2025,

Contextual Support Methodology Source Government

Question 3.4 What are the primary biophysical drivers of anthropogenic sediment and particulate nutrient export to the GBR and how have these drivers changed over time? - CSIRO Research Publications Repository - Publication

Preview of Nitrate retention under sugarcane in wet tropical Queensland deep soil profiles, accessed July 19, 2025,

Nitrate retention under sugarcane in wet tropical Queensland deep soil profiles, accessed July 19, 2025,

Contextual Support Journal

Environmental Monitoring of Nitrates and Other Water Quality Parameters: pH, Dissolved Oxygen (DO), Turbidity - Hanna Instruments Australia

Preview of Nitrification (DMPP) and urease (NBPT) inhibitors had no effect on pasture yield, nitrous oxide emissions, or nitrate leaching under irrigation in a hot-dry climate - CSIRO Publishing, accessed July 19, 2025,

Nitrification (DMPP) and urease (NBPT) inhibitors had no effect on pasture yield, nitrous oxide emissions, or nitrate leaching under irrigation in a hot-dry climate - CSIRO Publishing, accessed July 19, 2025,

Contextual Support Direct Evidence Journal

Managing riparian lands to improve water quality: optimising nitrate removal via denitrification - CSIRO Research Publications Repository

Preview of Our Plan for the Upper Herbert, accessed July 19, 2025,

Our Plan for the Upper Herbert, accessed July 19, 2025,

Contextual Support Regulatory Framework Government

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from

Preview of Question 3.4 What are the primary biophysical drivers of anthropogenic sediment and particulate nutrient export to the GBR and how have these drivers changed over time? - CSIRO Research Publications Repository - Publication, accessed July 19, 2025,

Question 3.4 What are the primary biophysical drivers of anthropogenic sediment and particulate nutrient export to the GBR and how have these drivers changed over time? - CSIRO Research Publications Repository - Publication, accessed July 19, 2025,

Contextual Support Government

Great Barrier Reef Report Card 2016 Management practice methods - Reef Water Quality Protection Plan

Preview of Reef Plan First Report Card - Wet Tropics Region, accessed July 19, 2025,

Reef Plan First Report Card - Wet Tropics Region, accessed July 19, 2025,

Contextual Support Journal

Reef Plan First Report Card - Wet Tropics Region,

Preview of Reef Water Quality - Grazing Program - Burnett Catchment Care Association, accessed July 19, 2025,

Reef Water Quality - Grazing Program - Burnett Catchment Care Association, accessed July 19, 2025,

Contextual Support GreyLiterature

Reef Water Quality - Grazing Program - Burnett Catchment Care Association,

Preview of Relationships between land use and nutrient concentrations in streams draining a 'wet-tropics' catchment in northern Australia - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 19, 2025,

Relationships between land use and nutrient concentrations in streams draining a 'wet-tropics' catchment in northern Australia - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 19, 2025,

Contextual Support Direct Evidence Journal

The water quality and economic benefits of agricultural management practices

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Toxicant default guideline values for aquatic ecosystem protection ..., accessed August 8, 2025

Direct Evidence Journal

Nitrate in freshwater, toxicant default guideline values for protecting aquatic ecosystems

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Understanding how sediments and nutrients reach the Great Barrier Reef - CSIRO, accessed July 19, 2025,

Contextual Support Government

Understanding how sediments and nutrients reach the Great Barrier Reef - CSIRO,

Preview of www.barrierreef.org, accessed on May 25, 2025,

www.barrierreef.org, accessed on May 25, 2025,

Contextual Support Journal

Regenerative Agriculture Program restoring soil pH case study: Macdonald, Whites Flat/Koppio, accessed July 18, 2025,

Preview of www.rrrc.org.au, accessed May 15, 2025,

www.rrrc.org.au, accessed May 15, 2025,

Direct Evidence Journal

Sediments and nutrients in north Queensland tropical streams: changes with agricultural development and pristine condition status (Technical Report No. 62, Australian Rainforest CRC, 2006)

Context

Region Australia
Biome Tropical & Subtropical Rainforests
Land Use Livestock Grazing & Pasture
Assessment Not Stated
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 30 May 2026

Notes

Upper Detrimental Threshold: 1.1 mg/L. Specifically applied to soft water (<30 mg/L as CaCO3) typical of tropical rainforest catchments. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TSR-LVG-WNI family.