| NZ Breakwater Centrelines (Topo, 1:50k) | National Topographic Office | Land Information New Zealand | Creative Commons Attribution 4.0 International | Layer | Vector | 25350 | 849 | ||
| NZ Spillway Edges (Topo, 1:50k) | National Topographic Office | Land Information New Zealand | Creative Commons Attribution 4.0 International | Layer | Vector | 28486 | 707 |