| NZ Canal Centrelines (Topo, 1:50k) | National Topographic Office | Land Information New Zealand | Creative Commons Attribution 4.0 International | Layer | Vector | 29565 | 1322 | ||
| NZ Tunnel Centrelines (Topo, 1:500k) | National Topographic Office | Land Information New Zealand | Creative Commons Attribution 4.0 International | Layer | Vector | 14676 | 162 |