Gully Density

AUS-TMS-URB-GUL General Moderate confidence

Benchmark Value

0 m/ha

Direction: Lower is desirable ↓

Form: Point

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.

Evidence & Context

The benchmark is 0 m/ha because gully formation in an urban context is an indicator of system failure, not a natural variable.

Metric Definition:

Gully Density as a measure of active gully formation per hectare in urban and developed land use within Australia's Tropical Monsoonal Savannas.

Benchmark Definition:

This benchmark represents the best available condition in urban and developed land use where no active gullies are present, indicating no system failure.

Justification:

Gully erosion is a definitive indicator of severe land degradation and the presence of any gully density greater than zero signifies a failure of design, implementation, or maintenance.

Sources (1)

Preview of Synthesis of Best Practice Environmental Management for Urban Development in Australian Tropical Savannas (Derived from multiple sources including NT and QLD government guidelines)

Synthesis of Best Practice Environmental Management for Urban Development in Australian Tropical Savannas (Derived from multiple sources including NT and QLD government guidelines)

Supporting Sources (16)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Ecological thresholds at the savanna-forest boundary: How plant traits, resources and fire govern the distribution of tropical biomes - ResearchGate

(PDF) Ecological thresholds at the savanna-forest boundary: How plant traits, resources and fire govern the distribution of tropical biomes - ResearchGate

Contextual Support

Alluvial Gully Erosion Rates and Processes Across the Mitchell River Fluvial Megafan in Northern Queensland, Australia - Resilient Landscapes Hub, accessed July 25, 2025

Preview of Alluvial Gully Erosion: A Dominant Erosion Process Across Tropical Northern Australia - CORE, accessed July 16, 2025,

Alluvial Gully Erosion: A Dominant Erosion Process Across Tropical Northern Australia - CORE, accessed July 16, 2025,

Contextual Support

Gully mapping and drivers in the grazing lands of the Burdekin ..., accessed July 20, 2025

Preview of Alluvial Gully Erosion: A Dominant Erosion Process Across Tropical Northern Australia: Full Report - ResearchGate, accessed July 22, 2025,

Alluvial Gully Erosion: A Dominant Erosion Process Across Tropical Northern Australia: Full Report - ResearchGate, accessed July 22, 2025,

Contextual Support GreyLiterature

Degradation of the Mitchell River fluvial megafan by alluvial gully erosion increased by post-European land use change, Queensla, accessed July 20, 2025

Preview of Australia's tropical savannas: vast, ancient and rich landscapes - CSIRO Research Publications Repository, accessed May 11, 2025,

Australia's tropical savannas: vast, ancient and rich landscapes - CSIRO Research Publications Repository, accessed May 11, 2025,

Contextual Support GreyLiterature

Williams RJ, Duff GA, Bowman DMJS, Cook GD. Australia's tropical savannas: vast, ancient and rich landscapes. In: David Keith, editor/s. Australian vegetation. Cambridge, UK: Cambridge University Press; 2017. 368-388.

Preview of Chapter 13 Gully erosion and its control - Queensland Government ..., accessed July 25, 2025,

Chapter 13 Gully erosion and its control - Queensland Government ..., accessed July 25, 2025,

Contextual Support

Chapter 13 Gully erosion and its control - Queensland Government ..., accessed July 25, 2025

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

Preview of Degradation of the Mitchell River fluvial megafan by alluvial gully erosion increased by post-European land use change, Queensla, accessed July 25, 2025,

Degradation of the Mitchell River fluvial megafan by alluvial gully erosion increased by post-European land use change, Queensla, accessed July 25, 2025,

Contextual Support Government

Degradation of the Mitchell River fluvial megafan by alluvial gully erosion increased by post-European land use change, Queensla, accessed July 25, 2025

Preview of Developing an Erosion and Sediment Control Plan for a Residential ..., accessed July 25, 2025,

Developing an Erosion and Sediment Control Plan for a Residential ..., accessed July 25, 2025,

Contextual Support Government

Developing an Erosion and Sediment Control Plan for a Residential ..., accessed July 25, 2025

Preview of Dust Control Darwin | Spray Grass Industries, accessed July 25, 2025,

Dust Control Darwin | Spray Grass Industries, accessed July 25, 2025,

Contextual Support Journal

General principles for erosion prevention and sediment control at construction sites in Minnesota

Preview of ecollaboration.org.au, accessed May 15, 2025,

ecollaboration.org.au, accessed May 15, 2025,

Contextual Support Journal

Gully Erosion | ECOllaboration

Preview of Erosion and sediment control (ESC) on construction sites | Environment, accessed August 10, 2025,

Erosion and sediment control (ESC) on construction sites | Environment, accessed August 10, 2025,

Contextual Support Government

Development manual planning scheme policy (PSP) SC6.4.8 Stormwater management Index - NET, accessed July 25, 2025

Preview of Guide to Erosion and Sediment Control in Urban Areas - NRCS Irrigation ToolBox Home Page, accessed July 25, 2025,

Guide to Erosion and Sediment Control in Urban Areas - NRCS Irrigation ToolBox Home Page, accessed July 25, 2025,

Contextual Support Journal

Guide to Erosion and Sediment Control in Urban Areas - NRCS Irrigation ToolBox Home Page, accessed July 25, 2025

Preview of Hillslope gully erosion in savanna rangelands tributary to the Great Barrier Reef: Investigation of hydrogeomorphic processes - USC Research Bank, accessed July 22, 2025,

Hillslope gully erosion in savanna rangelands tributary to the Great Barrier Reef: Investigation of hydrogeomorphic processes - USC Research Bank, accessed July 22, 2025,

Contextual Support Journal

Hillslope gully erosion in savanna rangelands tributary to the Great Barrier Reef: Investigation of hydrogeomorphic processes, sediment and nutrient yields (PhD Thesis)

Preview of Influence of Topographic Factors on the Characteristics of Gully Systems in Mountainous Areas of Ningnan Dry-Hot Valley, SW China - MDPI, accessed July 16, 2025,

Influence of Topographic Factors on the Characteristics of Gully Systems in Mountainous Areas of Ningnan Dry-Hot Valley, SW China - MDPI, accessed July 16, 2025,

Contextual Support Journal

Influence of Topographic Factors on the Characteristics of Gully Systems in Mountainous Areas of Ningnan Dry-Hot Valley, SW China - MDPI, accessed July 25, 2025

Preview of Treatment systems for urban stormwater management - WetlandInfo, accessed July 25, 2025,

Treatment systems for urban stormwater management - WetlandInfo, accessed July 25, 2025,

Contextual Support Government

Water Sensitive Urban Design for the Coastal Dry Tropics ..., accessed July 25, 2025

Preview of Urban stormwater - Queensland best practice environmental management guidelines 2009, accessed July 21, 2025,

Urban stormwater - Queensland best practice environmental management guidelines 2009, accessed July 21, 2025,

Contextual Support Journal

Urban stormwater - Queensland best practice environmental management guidelines 2009, accessed July 25, 2025

Context

Region Australia
Biome Tropical Monsoonal Savannas
Land Use Urban & Developed Use
Assessment Pristine Reference
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

Any active gully represents a state of active degradation. The concept of an upper detrimental threshold is not applicable as any value above zero is detrimental with harm increasing proportionally.