Quebec Hypsometric Contour Lines at 1:20,000 Scale

Government and Municipalities of Québec provides a hypsometric layer representing terrain relief for Quebec territory at a 1:20,000 scale. The data includes contour lines and dimensional points, with each file covering approximately 250 square kilometers. Level curves are generally at a 10-meter equidistance, derived from topographic maps.

Use Cases

• Generate digital elevation models (DEMs) from contour line data for hydrological or slope analysis.
• Analyze terrain relief and elevation changes using the 10-meter equidistance contour intervals.
• Integrate dimensional point data with contour lines for precise topographic mapping and surveying.
• Assess topographic feature density and distribution across 250-square-kilometer file extents.

Strengths

• Data is derived from authoritative 1:20,000 scale topographic maps for southern Quebec.
• Each file provides contiguous coverage for a substantial area of approximately 250 square kilometers.
• Contour lines maintain a consistent and precise vertical resolution, generally at a 10-meter equidistance.

Limitations

• Data in northern Quebec is sourced from a coarser 1:50,000 scale product, creating an inconsistency in resolution.
• Contour line equidistance can vary between 8 and 20 meters in some areas, introducing local precision differences.
• The automated translation of metadata may obscure original technical details or introduce errors.

Provenance

Source

Government and Municipalities of Québec

Collection Method

Contour lines digitized from topographic maps at a scale of 1:20,000; northern data from Natural Resources Canada's CanVec product at 1:50,000 scale.

Time Range

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Freshness

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Geography

Quebec territory, Canada