| Description |
This dataset provides national 1:50,000 scale topographic vector data representing the hydrographic network and related hydraulic structures across the territory of the Republic of Latvia. Maintained and published by the Latvian Geospatial Information Agency (Latvijas Ģeotelpiskās informācijas aģentūra - LĢIA), it consists of standardized thematic GeoJSON layers derived from the national topographic map series (Topo50_v2). Specifically, the hydrographic layers capture natural and artificial watercourses—including rivers, streams, and drainage canals (Topo50_v2 river.geojson)—alongside hydraulic retention and flood protection infrastructure such as dams, dikes, and embankments (Topo50_v2 damm.geojson). |