1 minute increments of the GDA94 latitude/longitude graticule

Department of Energy, Environment and Climate Action provides a polygon layer of rectangular cells aligned to 1-minute increments of the GDA94 latitude/longitude graticule. The layer is designed as an indexing mechanism for point record observations of flora and fauna and covers south-east Australia from 139°E to 151°30'E and 33°S to 42°S. It was last updated on 2026-04-09.

Use Cases

• Spatial indexing of biodiversity point records based on the 1-minute graticule grid mentioned in the description
• Aggregating species observation counts per grid cell based on the described indexing mechanism
• Mapping the distribution of flora and fauna across south-east Australia based on the defined geographic extent
• Integrating disparate ecological datasets using the common GDA94 coordinate reference system

Strengths

• Covers a defined geographic area from 139°E to 151°30'E and 33°S to 42°S, incorporating parts of South Australia, New South Wales, Bass Strait, and Tasmania
• Provides a standardized 1-minute grid based on the GDA94 coordinate system for consistent indexing
• Available in multiple GIS file formats including SHP, GDB, and DWG

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment for large-scale analysis

Provenance

Source

Department of Energy, Environment and Climate Action (data_gov_au)

Collection Method

Likely created as a derived GIS product for spatial indexing.

Time Range

null

Freshness

Last updated 2026-04-09 07:55:52.582426; freshness should be verified

Geography

South-east Australia extending from 139°E to 151°30'E and 33°S to 42°S.