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This web service displays the modelled flood extent and depth for the 1% AEP flood at Muddy Creek, Oamaru, in both the present day and in future climate change scenarios (RCP 8.5); as per the "Muddy Creek Flood Study" report prepared for the Waitaki District Council, May 2026.
Scenarios
The scenarios modelled are described below:
Scenario 1: 1% annual flood in present day conditions (current climate).
Scenario 2: 1% annual flood in a future climate scenario (RCP 8.5).
1% annual flood = 1% chance of a flood of this size happening in any year.
Webpage: Muddy Creek
Source reports:
Technical report: Muddy Creek Flood Study report prepared for the Waitaki District Council, May 2026.
Plain language summary: Muddy Creek Flood Study Summary Report
Data owner: ORC Natural Hazards 2026 (Spatial Analyst).
Static dataset, updated as new information becomes available.