UPPER MANGAWHERO AND TRIBUTARIES Flooding and Erosion Risks at Ohakune July 2015 Author Peter Blackwood Manager Investigations and Design Acknowledgements to Allan Cook, Group Manager Operations Jeremy Cumming, Senior Engineering Officer John Philpott, Consultant Engineer Jon Bell, Design Engineer Rachel Pinny, PA Group Secretary Operations Jeff Watson, Manager Catchment Data Quentin Gilkison, Surveyor/CAD Draughtsperson Wibo de Jonge, Surveyor/CAD Draughtsperson Peter Hurn, Senior Survey Technician Andrew Steffert, Environmental Information Analyst Mark Coetzee, Environmental Information Analyst Anne-Marie Westcott, Environmental Manager, Ruapehu District Council Steve Adams, Contract Supervisor, Ruapehu District Council Front Cover Photograph Park Avenue Dam Impoundment at Normal Water Levels Photographer: Peter Hurn July 2015 ISBN: 978-1-9-27259-33-7 Report No: 2015/EXT/1453 CONTACT 24hr Freephone 0508 800 800
[email protected] www.horizons.govt.nz Kairanga Cnr Rongotea & Kairanga-Bunnythorpe Rds Palmerston North Levin Palmerston North 11 Bruce Road 11-15 Victoria Avenue SERVICE Marton REGIONAL Cnr Hammond & Hair Sts DEPOTS CENTRES HOUSES Taihape Wanganui Torere Road Taumarunui 181 Guyton Street 34 Maata Street Ohotu Woodville Cnr Vogel (SH2) & Tay Sts POSTAL Horizons Regional Council, Private Bag 11025, Manawatu Mail Centre, Palmerston North 4442 | 06 9522 929 ADDRESS F EXECUTIVE SUMMARY NB: Executive summary to be completed upon report being confirmed as final. Upper Mangawhero and Tributaries : Flooding and Erosion Risks at Ohakune July 2015 i Executive Summary Upper Mangawhero and Tributaries : Flooding and Erosion Risks at Ohakune ii July 2015 CONTENTS Executive Summary i Contents iii 1. Introduction 1 1.1 Objective 1 1.2 Background 1 1.3 Scope of Work 5 1.4 Datums 5 2.