GWRC flood warning review phase 2 & 3 : recommendations from comparison of existing system to proposed Level of Service

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Leonard, G.S.; Woods, R.J.; Becker, J.S.; Potter, S.H. 2016 GWRC flood warning review phase 2 & 3 : recommendations from comparison of existing system to proposed Level of Service. Lower Hutt, N.Z.: GNS Science. GNS Science report 2016/66 vi, 76 p.; doi: 10.21420/G25P42

Abstract: Providing effective flood warning services is a critical role for Greater Wellington Regional Council (GWRC). Currently, flood warning services in the Wellington Region are provided across three parts of GWRC: Flood Protection, Environment Science and Wellington Region Emergency Management Office (WREMO). The current arrangement pre-dates the establishment of WREMO. The current system has not been reviewed recently and has never had a comprehensive review on service provision or delivery. To remedy this, a review of flood warning is currently being undertaken by GWRC. This report contributes to the review of the GWRC flood warning system. It reviews the level of alignment of the current GWRC flood warning system against proposed new Levels of Service (LOS). It specifically supports the GWRC Flood Warning Review Project Phases 2 & 3 and informs the development of an implementation plan for Phase 4. The review work undertaken for this report consisted of several phases: 1. A review of documentation about the current GWRC warning system (e.g. warning system arrangements, telemetry; plans, etc.); 2. Stakeholder engagement workshops to investigate the Level of Service anticipated by stakeholders, and analysis of the workshop findings to see how this fits with the proposed LOS; 3. A series of meetings with relevant agencies (e.g. GWRC, WREMO, GeoNet, MetService, Wellington Water) to explore current warning arrangements and alignment with the proposed LOS. (auth)