"National Basic Scale Map Symbols 1:500 / 1:1000 / 1:2000 Topographic Map Symbols" (GB/T 20257.1-2017)

This standard specifies the symbols, annotation levels, specifications, and color codes for representing natural and artificial features and terrain on 1:500, 1:1000, and 1:2000 topographic maps. It serves as a foundational technical reference for topographic mapping, planning design, and scientific research.

Applicable to:

Suitable for topographic mapping at 1:500, 1:1000, and 1:2000; applicable to the compilation of other map scales by reference.

Main Content:

• Survey control points, water systems, residential areas, and facilities

• Transportation, Pipelines, Boundaries, Terrain

• Vegetation, Soil, and Various Annotations

• Standards for Symbol Usage, Colors, and Map Frame Decoration

• Appendix: Table of Brief Notes, Examples, Division Numbering, and Map Frame Decoration Styles