Water Nitrate

AUS-TSR-FOR-WNI General Moderate confidence

Benchmark Value

0.01 mg/L

Direction: Higher is desirable ↑

Form: MinimumOnly

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 6 benchmarks together — the OptimalRange form drives the primary score, while 5 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

A concentration that is persistently and significantly below this level, for example <0.01 mg N/L, could be considered indicative of a system where bioavailable nitrogen is so scarce that it may compromise essential ecosystem processes, such as seedling establishment and forest regeneration.

Metric Definition:

Dissolved Inorganic Nitrogen (DIN) concentration

Benchmark Definition:

Lower boundary for water nitrate to avoid severe nutrient limitation.

Justification:

A persistent concentration below 0.01 mg N/L may indicate severe nutrient limitation, potentially compromising long-term forest regeneration and productivity.

Sources (1)

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

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

Supporting Sources (26)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Establishing riverine nutrient criteria using individual taxa ..., accessed July 20, 2025,

(PDF) Establishing riverine nutrient criteria using individual taxa ..., accessed July 20, 2025,

Contextual Support Journal

(PDF) Establishing riverine nutrient criteria using individual taxa ..., accessed July 20, 2025,

Preview of 2016 - Best Management PracƟces for Water Quality - Oklahoma Department of Agriculture, Food and Forestry, accessed July 20, 2025,

2016 - Best Management PracƟces for Water Quality - Oklahoma Department of Agriculture, Food and Forestry, accessed July 20, 2025,

Contextual Support Methodology Source Journal

Reef regulations and Best Management Practice programs factsheet - Queensland Government

Preview of 5. Nutritional limitations to the early growth of rainforest timber trees in north Queensland, accessed July 20, 2025,

5. Nutritional limitations to the early growth of rainforest timber trees in north Queensland, accessed July 20, 2025,

Contextual Support Journal

5. Nutritional limitations to the early growth of rainforest timber trees in north Queensland, accessed July 20, 2025,

Preview of Australia's State of the Forests Report - DAFF, accessed August 10, 2025,

Australia's State of the Forests Report - DAFF, accessed August 10, 2025,

Contextual Support Regulatory Framework

Baselines for Soil Health and Stability in NSW RFA Regions

Preview of Australia's State of the Forests Report 2018 - Montreal Process, accessed July 20, 2025,

Australia's State of the Forests Report 2018 - Montreal Process, accessed July 20, 2025,

Contextual Support Journal

Australia's State of the Forests Report 2018 - Montreal Process, accessed July 20, 2025,

Preview of Best practice farming in Great Barrier Reef catchments | Business ..., accessed July 25, 2025,

Best practice farming in Great Barrier Reef catchments | Business ..., accessed July 25, 2025,

Contextual Support Methodology Source Government

Best practice farming in Great Barrier Reef catchments | Business Queensland, accessed July 20, 2025,

Preview of Daintree catchment water quality targets, accessed July 20, 2025,

Daintree catchment water quality targets, accessed July 20, 2025,

Contextual Support Journal

NUTRIENT CYCLING IN MOIST TROPICAL FOREST - Annual Reviews

Preview of Emission Sources of Nitrous Oxide From Australian Agricultural and Forest Lands and Mitigation Options - DCCEEW, accessed July 20, 2025,

Emission Sources of Nitrous Oxide From Australian Agricultural and Forest Lands and Mitigation Options - DCCEEW, accessed July 20, 2025,

Contextual Support Journal

2016 - Best Management PracƟces for Water Quality - Oklahoma Department of Agriculture, Food and Forestry

Preview of Establishing riverine nutrient criteria using individual taxa thresholds - PubMed, accessed July 20, 2025,

Establishing riverine nutrient criteria using individual taxa thresholds - PubMed, accessed July 20, 2025,

Contextual Support Direct Evidence Journal

Safeguarding Queensland's iconic Great Barrier Reef and waterways

Preview of Establishing riverine nutrient criteria using individual taxa thresholds, accessed August 8, 2025

Establishing riverine nutrient criteria using individual taxa thresholds, accessed August 8, 2025

Contextual Support Direct Evidence Journal

Establishing riverine nutrient criteria using individual taxa thresholds - ResearchOnline@JCU, accessed July 25, 2025

Preview of Identifying the land-based sources of suspended sediments, nutrients and pesticides discharged to the Great Barrier Reef from the Tully–Murray Basin, Queensland, Australia - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 20, 2025,

Identifying the land-based sources of suspended sediments, nutrients and pesticides discharged to the Great Barrier Reef from the Tully–Murray Basin, Queensland, Australia - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 20, 2025,

Contextual Support Journal

Identifying the land-based sources of suspended sediments, nutrients and pesticides discharged to the Great Barrier Reef from the Tully–Murray Basin, Queensland, Australia - CSIRO PUBLISHING | Marine and Freshwater Research

Preview of Memorandum - Nitrate guideline values in ANZECC 2000, accessed August 8, 2025

Memorandum - Nitrate guideline values in ANZECC 2000, accessed August 8, 2025

Contextual Support Journal

Hickey, C. (2002). Nitrate guideline values in ANZECC 2000. Memorandum MFE02237 prepared for Ministry for the Environment (New Zealand). NIWA Client Report: HAM2002-126.

Preview of Nitrate in freshwater and marine water - Water Quality Australia, accessed August 2, 2025,

Nitrate in freshwater and marine water - Water Quality Australia, accessed August 2, 2025,

Contextual Support Regulatory Framework

Memorandum - Nitrate guideline values in ANZECC 2000

Preview of Nitrogen levels in the Tully River - A long-term view | Request PDF - ResearchGate, accessed July 20, 2025,

Nitrogen levels in the Tully River - A long-term view | Request PDF - ResearchGate, accessed July 20, 2025,

Contextual Support Journal

Nitrogen levels in the Tully River - A long-term view | Request PDF - ResearchGate

Preview of NUTRIENT CYCLING IN MOIST TROPICAL FOREST - Annual Reviews, accessed July 20, 2025,

NUTRIENT CYCLING IN MOIST TROPICAL FOREST - Annual Reviews, accessed July 20, 2025,

Contextual Support Direct Evidence Journal

Nutrient enhancement, food quality and community dynamics in a tropical rainforest stream

Preview of Nutrient enhancement, food quality and community dynamics in a tropical rainforest stream, accessed July 20, 2025,

Nutrient enhancement, food quality and community dynamics in a tropical rainforest stream, accessed July 20, 2025,

Contextual Support Regulatory Framework Journal

Nitrate in freshwater and marine water - Water Quality Australia

Preview of Nutrients in Australian tropical rivers: changes with agricultural development and implications for receiving environments | Request PDF - ResearchGate, accessed July 20, 2025,

Nutrients in Australian tropical rivers: changes with agricultural development and implications for receiving environments | Request PDF - ResearchGate, accessed July 20, 2025,

Contextual Support Journal

Nutrients in Australian tropical rivers: changes with agricultural development and implications for receiving environments | Request PDF - ResearchGate, accessed July 25, 2025

Preview of Rainforest - WetlandInfo - Department of the Environment, Tourism, Science and Innovation, accessed July 18, 2025,

Rainforest - WetlandInfo - Department of the Environment, Tourism, Science and Innovation, accessed July 18, 2025,

Contextual Support Government

Rainforest - WetlandInfo - Department of the Environment, Tourism, Science and Innovation

Preview of Rainforest – Processes (Department of the Environment, Tourism ..., accessed July 20, 2025,

Rainforest – Processes (Department of the Environment, Tourism ..., accessed July 20, 2025,

Contextual Support Direct Evidence Government

Sediments and nutrients in north Queensland tropical streams ...

Preview of Reef regulations and Best Management Practice programs factsheet, accessed July 18, 2025,

Reef regulations and Best Management Practice programs factsheet, accessed July 18, 2025,

Contextual Support Methodology Source Journal

Treatment systems for agriculture – Farm and waterway best management practices

Preview of Relationships between land use and nutrient concentrations in streams draining a 'wet-tropics' catchment in northern Australia - ResearchOnline@JCU, accessed July 20, 2025,

Relationships between land use and nutrient concentrations in streams draining a 'wet-tropics' catchment in northern Australia - ResearchOnline@JCU, accessed July 20, 2025,

Contextual Support Journal

Daintree catchment water quality targets

Preview of Safeguarding Queensland's iconic Great Barrier Reef and waterways, accessed July 20, 2025,

Safeguarding Queensland's iconic Great Barrier Reef and waterways, accessed July 20, 2025,

Contextual Support Government

Report Card - Wet Tropics Waterways

Preview of Treatment systems for agriculture – Farm and waterway best ..., accessed July 18, 2025,

Treatment systems for agriculture – Farm and waterway best ..., accessed July 18, 2025,

Contextual Support Government

Review of the current state of knowledge for the monitoring of ..., accessed August 10, 2025

Preview of Wet Tropics - Queensland Environment Department, accessed July 20, 2025,

Wet Tropics - Queensland Environment Department, accessed July 20, 2025,

Contextual Support Government

Rainforest – Processes (Department of the Environment, Tourism ...

Preview of wet tropics report card 2024 - waterway environment methods, accessed July 20, 2025,

wet tropics report card 2024 - waterway environment methods, accessed July 20, 2025,

Contextual Support

wet tropics report card 2024 - waterway environment methods, accessed July 20, 2025,

Preview of wet tropics report card 2024 - waterway environment results, accessed August 2, 2025,

wet tropics report card 2024 - waterway environment results, accessed August 2, 2025,

Contextual Support GreyLiterature

Report Card Explainer - Reef 2050 Water Quality Improvement Plan, accessed August 2, 2025

Context

Region Australia
Biome Tropical & Subtropical Rainforests
Land Use Production Forestry
Assessment Not Stated
Vegetation Forest
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 28 May 2026

Notes

This value is a conceptual floor based on the natural baseline of pristine streams. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

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