Kanalmapping

Kanalmapping is the systematic documentation and representation of canal networks in geospatial form. It encompasses natural and artificial waterways designed for irrigation, drainage, navigation, or flood control, including canals, feeders, distributaries, locks, gates, pumps, and associated structures. The goal is to support planning, operation, maintenance, and governance of waterway infrastructure.

Practitioners use field surveys, drone and aircraft imagery, LiDAR, sonar or bathymetric surveys where needed, and existing records to create digital line features for canals and point and polygon features for structures. Data are integrated in Geographic Information Systems and enriched with attributes such as length, width, depth, canal grade, flow capacity, construction material, ownership, maintenance status, and seasonal restrictions. 3D modelling may be used for locks and intake structures.

Outputs include hydrographic datasets, asset inventories, and navigation charts; metadata describes coordinate system, accuracy, date of capture, and data provenance. Standards may align with national hydrological or geomatic frameworks or with international open data schemas to enable interoperability.

Applications span water resource management, irrigation planning, flood risk assessment, navigation and port logistics, environmental monitoring, and restoration projects. Kanalmapping supports asset management, emergency response, and policy evaluation by providing a consistent, up-to-date view of canal networks.

Challenges include data fragmentation across agencies, varying measurement units and naming conventions, limited accessibility, and the need for regular updates to reflect construction or decommissioning. Effective kanalmapping relies on clear governance, standardized schemas, and routine data maintenance.