Water Nitrate

AUS-ASC-FOR-WNI General Moderate confidence

Benchmark Value

0.05 mg/L

Direction: Lower is desirable ↓

Form: MaximumOnly

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is Point, 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

Point Primary Point Guard MaximumOnly Guard

Evidence & Context

The reference value is presented as <0.05 mg/L NO3− for practical reporting, rounding up slightly from the calculated 0.044 mg/L.

Metric Definition:

Water nitrate concentration in streams draining production forestry areas in Australian alpine and subalpine complexes.

Benchmark Definition:

This benchmark represents the maximum desirable water nitrate concentration in streams within production forestry areas of the Australian alpine and subalpine biome, reflecting near-pristine water quality conditions.

Justification:

Derived from ANZECC 2000 guidelines for Victorian alpine streams, representing minimally disturbed catchments as a proxy for best-practice production forestry.

Sources (1)

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

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

View Source

Supporting Sources (13)

Additional references from the underlying research that informed this benchmark.

Australia and New Zealand Draft Guidelines for Fresh - Queensland Farmers' Federation

Contextual Support Journal

Australia and New Zealand Draft Guidelines for Fresh - Queensland Farmers' Federation

View Source

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

Direct Evidence Journal

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

View Source

Desktop review – Impact of bushfires on water quality, accessed August 10, 2025,

Contextual Support Journal

Australia's Sustainable Forest Management Framework of Criteria and Indicators 2008 - DAFF

View Source

Ecosystem Health - Top of the South Scorecards Freshwater & Terrestrial Ecosystems - The Nature Conservancy, accessed on May 25, 2025,

Contextual Support Journal

Ecosystem Health - Top of the South Scorecards Freshwater & Terrestrial Ecosystems - The Nature Conservancy, accessed March 28, 2026,

View Source

Preview of Establishment of reference or baseline conditions of chemical indicators in New Zealand streams and rivers relative to present conditions - CSIRO Publishing

Establishment of reference or baseline conditions of chemical indicators in New Zealand streams and rivers relative to present conditions - CSIRO Publishing

Contextual Support Journal

Establishment of reference or baseline conditions of chemical indicators in New Zealand streams and rivers relative to present conditions - CSIRO Publishing

View Source

Limitation and retention of nutrients in alpine streams of Switzerland - ResearchGate

Contextual Support

Limitation and retention of nutrients in alpine streams of Switzerland - ResearchGate

View Source

Nitrogen dynamics in alpine soils of south ... - CSIRO Publishing, accessed August 28, 2025,

Contextual Support Journal

Nitrogen dynamics in alpine soils of south-eastern Australia - CSIRO Publishing

View Source

Preview of Persistent Nitrate in Alpine Waters with Changing Atmospheric Deposition and Warming Trends | Environmental Science & Technology - ACS Publications

Persistent Nitrate in Alpine Waters with Changing Atmospheric Deposition and Warming Trends | Environmental Science & Technology - ACS Publications

Contextual Support Journal

Persistent Nitrate in Alpine Waters with Changing Atmospheric Deposition and Warming Trends | Environmental Science & Technology - ACS Publications

View Source

Preview of Review of the current state of knowledge for the monitoring of forestry impacts on waterway health in NSW coastal forests - Natural Resources Commission, accessed August 9, 2025

Review of the current state of knowledge for the monitoring of forestry impacts on waterway health in NSW coastal forests - Natural Resources Commission, accessed August 9, 2025

Contextual Support Journal

Review of the current state of knowledge for the monitoring of ..., accessed July 31, 2025,

View Source

Streamside Forest Buffer Width Needed to Protect Stream Water Quality, Habitat, and Organisms

Contextual Support Journal

Streamside Forest Buffer Width Needed to Protect Stream Water Quality, Habitat, and Organisms

View Source

The legacy of a severe wildfire on stream nitrogen and carbon in headwater catchments - USDA Forest Service

Contextual Support

The legacy of a severe wildfire on stream nitrogen and carbon in headwater catchments - USDA Forest Service

View Source

Toxicant default guideline values technical briefs - Water Quality Australia, accessed July 26, 2025,

Contextual Support Government

Toxicant default guideline values technical briefs

View Source

Water Quality of Rivers in the Inglis – Flowerdale Catchment - Department of Natural Resources and Environment Tasmania

Contextual Support Journal

Derwent Estuary Program (2011). Derwent Catchment Review Part 1.

View Source

Context

Region Australia
Biome Alpine and Subalpine Complex
Land Use Production Forestry
Assessment Conservation Target
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 2
Effective From 3 Jun 2026

Notes

No upper detrimental threshold — higher values are always worse beyond this maximum. This value is an aspirational target for best-practice production forestry, indicating water quality nearly indistinguishable from pristine conditions. The value is based on Total Nitrogen converted to nitrate and rounded for practical use.

Related Benchmarks

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