Balladonia SI51-03: 1:250,000 Scale Topographic Map of Australia

516 maps comprise the AUSTopo series, the largest-scale topographic map series covering the entire Australian continent. Each standard map covers an area of approximately 1.5 degrees longitude by 1 degree latitude, showing natural and constructed features like roads, rail, vegetation, and 50-meter contour intervals. Geoscience Australia produces this series, with the Balladonia sheet last updated on 2026-03-25.

Use Cases

• Terrain analysis and elevation modeling based on 50-meter contour intervals.
• Infrastructure planning and routing based on road and rail network data.
• Environmental and land-use studies based on vegetation and hydrography features.
• Creating regional base maps for GIS projects based on standardized 1:250,000 scale coverage.

Strengths

• Covers the entire Australian continent at a consistent 1:250,000 scale.
• Contains approximately 516 standard and 50 special maps in the series.
• Includes multiple coordinate datums (GDA94, GDA2020) and projections (UTM).

Limitations

• Data is provided as a PDF, which is not a machine-readable geospatial format for direct analysis.
• Row count and column-level documentation are absent; data structure must be inferred after download.
• The map may contain information from surrounding sheets, which could affect precise boundary definitions.

Provenance

Source

Geoscience Australia Data

Collection Method

Part of the published AUSTopo - Australian Digital Topographic Map Series.

Freshness

Last updated 2026-03-25 17:16:09.843917; freshness should be verified.

Geography

Australia, specifically the Balladonia map sheet area.