Latvian River Network from Russian Topographic Maps

Digitized drainage network for Latvia, originally sourced from Russian topographic maps at a scale of 1:500,000. The data was converted from DXF files to an ARC/INFO coverage format by the Latvian Environment Data Centre and GRID-Arendal. Precise coordinate details require using the ARC/INFO 'describe' command on the vector member.

Use Cases

• Analyzing river connectivity and flow paths using the 'lline' feature_type for linear geometries.
• Mapping the national drainage network for hydrological modeling, leveraging the UTM Zone 35 projection for spatial accuracy.
• Studying the digitization quality of historical paper maps by examining the vector attributes and source scale.

Strengths

• Source maps have a defined scale of 1:500,000, providing a known level of detail.
• Data is stored in a structured geospatial format (ARC/INFO coverage) with a defined UTM projection (Zone 35).

Limitations

• The exact temporal coverage and data collection dates are unknown.
• Data lineage indicates conversion from paper maps and DXF files, which may introduce digitization artifacts.
• Sample data and specific column attributes are unavailable for review.

Provenance

Source

Latvian Environment Data Centre, with conversion by GRID-Arendal.

Collection Method

Digitized from paper Russian topographic maps and converted from DXF files to ARC/INFO coverage.

Time Range

null

Freshness

null

Geography

Latvia