Urban Flood Mapping and Stormwater Management Planning: A Case Study in Napier

Ali Paine, Neal Cody, Abdul Nabi - Stantec

Napier City Council (NCC) engaged Stantec’s Modelling Team to undertake a stormwater master planning (SWMP) to represent its hydrological and hydraulic systems, assess flooding damages, and recommend flood mitigation options. The SWMP informs Napier’s 30-Year Infrastructure Strategy and other aspects of the Stormwater Activity Management Plan. The outputs from the study were used for the stormwater expenditure elements of the Long Term Plan (LTP). Subsequently, both the hydraulic model and activities identified within the SWMP have been used for assisting NCC’s with growth assessments, structure plans and responding to requests generated by the Governments Infrastructure Acceleration Fund announced in March 2021.