Gully Density

AUS-TGP-URB-GUL General Moderate confidence

Benchmark Value

0 m/ha
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 MaximumOnly Guard Point Guard

Evidence & Context

The threshold for detrimental effects is any value >0 m/ha.

Metric Definition:

Upper detrimental threshold where gully density causes ecosystem harm.

Benchmark Definition:

This benchmark defines the maximum acceptable gully density in urban and developed areas of temperate grassy woodlands and plains in Australia before detrimental effects occur.

Justification:

Negative impacts of gully erosion begin immediately upon gully formation and increase with density.

Sources (1)

Preview of Synthesis of Australian Best Practice Erosion and Sediment Control (ESC) and Water-Sensitive Urban Design (WSUD) Frameworks
Synthesis of Australian Best Practice Erosion and Sediment Control (ESC) and Water-Sensitive Urban Design (WSUD) Frameworks
View Source

Supporting Sources (18)

Additional references from the underlying research that informed this benchmark.

Preview of Agricultural Land Fragmentation at Urban Fringes: An Application of Urban-To-Rural Gradient Analysis in Adelaide - MDPI, accessed August 11, 2025
Agricultural Land Fragmentation at Urban Fringes: An Application of Urban-To-Rural Gradient Analysis in Adelaide - MDPI, accessed August 11, 2025
Contextual Support Journal

Stormwater Management in a Water Sensitive City blueprint2012, accessed August 11, 2025

View Source
Preview of Australian Government Department of the Environment. (2016). Approved Conservation Advice (including listing advice) for the Natural Temperate Grassland of the South Eastern Highlands (EC 152).
Australian Government Department of the Environment. (2016). Approved Conservation Advice (including listing advice) for the Natural Temperate Grassland of the South Eastern Highlands (EC 152).
Contextual Support Journal

Temperate Grasslands - Greening Australia, accessed August 11, 2025

View Source
Preview of Chapter 13 Gully erosion and its control - Queensland Government publications, accessed August 12, 2025
Chapter 13 Gully erosion and its control - Queensland Government publications, accessed August 12, 2025
Contextual Support Journal

The hydrogeomorphic influences on alluvial gully erosion along the Mitchell River fluvial megafan

View Source
Preview of Chapter 7 - Western Australian Government, accessed August 11, 2025
Chapter 7 - Western Australian Government, accessed August 11, 2025
Contextual Support GreyLiterature

Urban stormwater management guidance | epa.vic.gov.au, accessed August 11, 2025

View Source
Preview of Effectiveness of Water-Sensitive Urban Design Techniques on Stormwater Quantity Management at a Residential Allotment Scale - MDPI, accessed August 2, 2025,
Effectiveness of Water-Sensitive Urban Design Techniques on Stormwater Quantity Management at a Residential Allotment Scale - MDPI, accessed August 2, 2025,
Direct Evidence

Effectiveness of Water-Sensitive Urban Design Techniques on Stormwater Quantity Management at a Residential Allotment Scale - MDPI, accessed August 11, 2025

View Source
Preview of Erosion & Sediment Control (2) - Healthy Land & Water, accessed August 11, 2025
Erosion & Sediment Control (2) - Healthy Land & Water, accessed August 11, 2025
Direct Evidence Journal

Erosion & Sediment Control (2) - Healthy Land & Water, accessed August 11, 2025

View Source
Preview of Grassy woodlands | Landscape Australia, accessed August 11, 2025,
Grassy woodlands | Landscape Australia, accessed August 11, 2025,
Contextual Support Journal

Grassy woodlands | Landscape Australia, accessed August 11, 2025

View Source
Preview of Grassy woodlands | Landscape Australia, accessed August 5, 2025,
Grassy woodlands | Landscape Australia, accessed August 5, 2025,
Contextual Support GreyLiterature

Grassy woodlands | Landscape Australia, accessed August 4, 2025,

View Source
Preview of Grey Box (Eucalyptus microcarpa) Grassy Woodlands and Derived Native Grasslands of South-eastern Australia, accessed August 10, 2025,
Grey Box (Eucalyptus microcarpa) Grassy Woodlands and Derived Native Grasslands of South-eastern Australia, accessed August 10, 2025,
Contextual Support

Is there a close association between 'soils' and 'vegetation'? A case study from central western New South Wales, accessed August 4, 2025,

View Source
Preview of Improving how gully erosion and river sediment transport processes are represented in Queensland catchment models, accessed May 11, 2025,
Improving how gully erosion and river sediment transport processes are represented in Queensland catchment models, accessed May 11, 2025,
Contextual Support Journal

Regional pilot application of MERGE gully erosion model - Queensland science, accessed August 11, 2025

View Source
Preview of Managing stubble | General agronomy | Crop production | Grains ...
Managing stubble | General agronomy | Crop production | Grains ...
Contextual Support Journal

Improving how gully erosion and river sediment transport processes are represented in Queensland catchment models, accessed August 11, 2025

View Source
Preview of Managing Urban Stormwater: Treatment Techniques - NSW Government, accessed August 11, 2025
Managing Urban Stormwater: Treatment Techniques - NSW Government, accessed August 11, 2025
Contextual Support Journal

Managing Urban Stormwater: Treatment Techniques - NSW Government, accessed August 11, 2025

View Source
Preview of Program - CSIRO, accessed August 1, 2025,
Program - CSIRO, accessed August 1, 2025,
Contextual Support Journal

Rehabilitation effects on gully sediment yields and vegetation in a savanna rangeland - CSIRO Research Publications Repository

View Source
Preview of Reef Trust Phase IV—Gully and Stream Bank Toolbox—A technical guide for the Reef Trust Phase IV Gully and Stream Bank Erosio - DCCEEW, accessed August 12, 2025
Reef Trust Phase IV—Gully and Stream Bank Toolbox—A technical guide for the Reef Trust Phase IV Gully and Stream Bank Erosio - DCCEEW, accessed August 12, 2025
Contextual Support Journal

Chapter 13 Gully erosion and its control - Queensland Government ...

View Source
Preview of Stormwater pollution prevention - Building & construction - EPA SA, accessed August 10, 2025,
Stormwater pollution prevention - Building & construction - EPA SA, accessed August 10, 2025,
Direct Evidence Government

Soil degradation | Land and soil | Environment and Heritage, accessed August 11, 2025

View Source
Preview of Temperate Grasslands - Greening Australia, accessed August 4, 2025
Temperate Grasslands - Greening Australia, accessed August 4, 2025
Contextual Support Journal

Plant nutrients in the soil - NSW Department of Primary Industries

View Source
Preview of Water Sensitive Urban Design | Georges Riverkeeper, accessed August 11, 2025
Water Sensitive Urban Design | Georges Riverkeeper, accessed August 11, 2025
Contextual Support Journal

Water Sensitive Urban Design | Georges Riverkeeper, accessed August 11, 2025

View Source
Preview of Water-sensitive urban design - Wikipedia, accessed August 11, 2025,
Water-sensitive urban design - Wikipedia, accessed August 11, 2025,
Contextual Support GreyLiterature

Water-sensitive urban design - Wikipedia

View Source

Context

  • Region Australia
  • Biome Temperate Grassy Woodlands & Plains
  • Land Use Urban & Developed Use
  • Assessment Conservation Target
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 8 Jun 2026

Notes

Any measurable presence of gullies is detrimental; the threshold is effectively zero.