NSW Distinctive Land Surface Lines: Levee Features in GDA2020

A line feature class defining Distinctive Land Surface features of discrete extent for New South Wales, Australia. The dataset is provided by Spatial Services, a business unit of the Department of Customer Service NSW, and was initially published on 07/02/2020. It includes subtypes such as 'Levee', defined as an artificial bank for surface water diversion.

Use Cases

• Map artificial water diversion structures based on the 'Levee' subtype.
• Analyze land surface features for environmental planning based on the 'Distinctive Land Surface' classification.
• Integrate physiographic data with other themes like transport and water for foundational spatial analysis.
• Update legacy GDA94 spatial projects to the modern GDA2020 standard for improved accuracy.

Strengths

• Aligns with the national GDA2020 standard, improving positional accuracy and compatibility.
• Maintains positional relationship with multiple NSW Foundation Spatial Data Framework themes.
• Provides a specific accuracy tolerance based on map scale, ranging from 0.25m at 1:500 to 50m at 1:100,000.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, being specific to NSW.

Provenance

Source

Spatial Services, Department of Customer Service NSW

Collection Method

Digitised from the best available cadastral mapping at scales ranging from 1:500 to 1:250,000.

Freshness

Data currency is listed as 01/01/3000, indicating a planned long-term validity, but the service was updated to GDA2020 recently.

Geography

Full State of New South Wales, Australia