Screening-level dam-breach model (ANUGA on LINZ 1 m LiDAR). Not a certified assessment. See the repository README and SPEC for method and caveats.
East embankment breachPond 1 → Pond 2 cascade, 7.2 Mm³ released, peak ~2,100 m³/s. 4 h animation. West embankment breachPond 1 piping failure only, 1.2 Mm³ released, peak ~235 m³/s. 4 h animation. Results and mapsKey numbers for all four breach scenarios, arrival-time comparison with Damwatch, and every hazard map (depth, speed, depth×velocity, hazard class, arrival time). Repository and handoverCode, configuration, specification and run instructions. Tripod Digital · September 2026 · LiDAR © Environment Canterbury / LINZ (CC BY 4.0) · Roads and buildings © OpenStreetMap contributors (ODbL)