Flood Warning Procedures Manual 2003
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Environment Waikato Internal Series 2002/08 Flood Warning Procedures Manual 2003 Distribution List (controlled copies): Hamilton Incumbent Level 1 Emergency Management Officer (EMO) Incumbent Level 2 Emergency Management Officer (EMO) Natural Hazards and Emergency Management Officer (working copy only) Paeroa Hazard Liaison Officer (HLO) Taupo Hazard Liaison Officer (HLO) Prepared by: Adam Munro Peter Mora For: Environment Waikato PO Box 4010 HAMILTON EAST 4 February 2003 Document #: 761111 Environment Waikato: Incoming Call or Query Emergency Management Response Procedures Phone: 025 992 120 Emergency Pager: 026 257 4456 Management Duty Freephone: 0800 800 401 Officer EMO2 Ph: 027 229 2958 Assess nature of call Civil Defence Flood (e.g. volcanic eruption, Marine Oil Warning earthquakes etc) Spills As per the EMO Notify Duty As per the EMO Roster Roster On-Scene Commander Scott Fowlds Ph. 07 855 6503 or 0274 980 803 Guy Russell Ph 07 855 9398 Murray Mulholland Ph 07 858 4994 For Freshwater (inland) Spills, refer caller to: RUG – Pollution Response Ph 0800 800 401 External Emergency Contacts: MRP CC MRP Flow Genesis CC Genesis Flow Phone Phone Ph (07) 857 0110 (0800) 820 082 (07) 386 8615 (07) 386 8113 (07) 386 1212 – Dennis Drinkrow (021) 835 483 IGNS (for Earthquake and Volcanic Activity) Rostered Duty Scientist Ph 04 570 1444 or 07 376 0155 Dept of Conservation Duty Officer Ph 025 905 830 Hot-line: 0800 362 468 Maritime Safety Authority (for Marine Oil Spills) Marine Duty Officer Ph 04 472 7367 or 025 439 508 Pgr 026 816 159 Sandbags Thompson Sack Company Ph 07 889 6960 ProLife Foods (Nikho van der Zwet) Ph 834 3333 ext 711 Councils (out of region) Environment BoP Ph 07 307 2545 (office hours only) Rotorua District Council Ph 07 350 0172 Auckland Regional Council Ph 025 770 922 (Ian Wood) or 0800 806 040 Transit NZ Information Line Ph 0800 44 44 49 NZ Fire Service (Rob Saunders) (07) 834 1700 (025) 822 215 Police (John Kelly) (027) 243 1494 Federated Farmers (John Fisher) (07) 827 3628 or (025) 356 020 Flood Warning Procedures Manual 2003 Page i Councillor Phone/Fax Numbers Councillor Phone Numbers Fax Numbers L B Burdett Home Ph: 07 378 3025 Home Fax: 07 378 3025 (Laurie) I Balme Home Ph: 07 829 8855 Home Fax: 07 829 8845 (Ian) 027 471 9920 RE Hawkins 07 378 9358 Home Fax: 07 378 9357 (Rex & Sue) 027 296 3695 J D Howland Home Ph: 07 883 8995 Home Fax: 07 883 8994 (Jim & Elizabeth) Cellphone: 0274 715 560 AW Hinds 07 866 3981 Home Fax: 07 866 3981 (Arthur) 021 901 167 L A Livingston Hamilton Ph: 07 856 6952 Home Fax: 09 425 6036 (Lois) Warkworth Ph: 09 425 6035 Cellphone: 0274 867 188 A J Macdonald Home Ph: 07 824 7094 Home Fax: 07 824 7894 (Angus & Ruth) Cellphone: 025 343 685 BJ Morrison 07 863 6344 Home Fax: 07 862 6348 (Basil) 027 494 6403 R A Neely Home Ph: 07 873 6946 Home Fax: 07 873 6956 (Andra & Lance) Cellphone: 021 133 6086 B M O’Connor Home Ph: 07 825 9858 Home Fax: 07 825 9862 (Barry & Josie) Cellphone: 0274 854 480 S C Osborne Home Ph: 07 887 3830 Home Fax: 07 887 3830 (Steve & Judy) Cellphone: 025 380 102 D J M Peart Home Ph: 07 847 6319 Home Fax: 07 846 7322 (David & Heather) Cellphone: 0274 843 765 P A Southgate Home Ph: 07 856 1470 Home Fax: 07 856 6156 (Paula & Ross McNeil) J A Vernon Home Ph: 07 825 688 Home Fax: 07 825 8168 (Jenni & Gordon) Cellphone: 025 967 288 Page ii Doc # 761111 Overview of the Waikato/Waipa River System WAIKATO RIVER WAIPA RIVER Tributaries TPD Otewa Te Kuiti LAKE TAUPO Control Gates Taupo Catchment Otorohanga Mt Pirongia Trib inflows Puniu Karapiro Hydro System Trib inflows Whatawhata Hamilton Lower Waikato Ngaruawahia Mangawara Huntly La ke Waikare Rangiriri Spillway Trib inflows Whangamarino Control Gates Mercer Mangatangi Mangatawhiri Flood Warning Procedures Manual 2003 Page iii Overview of the Piako/Waihou River System Waihou River Piako River Okauia Kiwitahi Shaftesbury Morrinsville Te Aroha Paeroa-Tahuna Rd Mangaiti Stm Waitawheta R. Waitoa River Waharoa Tirohia Ohinemuri Mellon Road Paeroa River Hikutaia R. Maukoro Landing Matatoki Stm Kirikiri Stm Flax Block ponding zones Mangakirikiri Stream Ngatea Thames Kauaeranga River Firth of Thames Page iv Doc # 761111 Flood Warning Procedures Manual Record of Amendments Amendment Number: Amendment Date: Entered by: Flood Warning Procedures Manual 2003 Page v Why does Environment Waikato provide Flood Warnings? Flooding is a major hazard in the Waikato Region due to: • The presence of 20 major and 1420 minor river systems • It’s location makes it susceptible to storms of tropical origin • Steep gradients in many of the region’s river catchments promotes “flash flooding” and increased runoff rates • There are large areas of low-lying flood plains below, at, or just above sea-level that are intensely farmed (see Figure 1) • There are large areas of land lacking vegetation cover – increasing run-off and erosion What difference does the Flood Warning System make? Without an operative flood warning system in place, flood management with electricity generators would be difficult and more complex, there would be more reliance on local knowledge, un-necessary pre-emptive actions could be taken (costly), community concern would be much higher, resources could be stretched, mis-information to District Council’s could occur, and inadequate media reporting could all contribute to a less than effective flood response. Legislative Requirements Environment Waikato has a mandate under two acts of parliament to monitor waterways for floods. The Soil Conservation and Rivers Control Act 1941 states that regional councils (ex Catchment Boards) should prevent/minimise damage by floods, and the Resource Management Act 1991 gives regional councils functions to control the use of land for avoidance and/or mitigation of natural hazards. Environment Waikato is also very active in flood forecasting, carrying over many of the functions of its predecessor, the Waikato Catchment Board. Hence, behind the legislative requirements, experience, resources and assets play a vital role in Environment Waikato’s continued involvement in flood warning. The MetService provides a weather forecasting service, and issues severe weather warnings to assist in the management of river floods. In the last 25 years. There have been several major floods and a number of minor events recorded throughout the region. The more significant of these occurred in 1976 (Ohinemuri River), 1981 (Ohinemuri River), 1985 (Kauaeranga River), 1995 (Lower Waikato River), 1997 (Cyclone Fergus, Tairua River), and July 1998 (Lower Waikato Flood Event). Generally, flood events have been experienced throughout the region in all 20 major river systems and have affected both urban and rural communities. For further information, refer to the “Natural Hazard Impact and Priorities – Overview Report 1998” by D. Parkin. Page vi Doc # 761111 Figure 1: Main aeas in the Waikato Region at risk from flooding Flood Warning Procedures Manual 2003 Page vii Purpose of Manual This Flood Manual comprises a set of instructions and supporting information that sets out the responsibilities for action, reporting, decision making, and liaison in the event of a flood in the Waikato Region. The purpose of this manual is to illustrate procedures and define the implementation of systems and human resources. The Natural Hazards/Emergency Management Programme Manager is responsible for planning, maintaining, and implementing this Flood Manual and for training Environment Waikato Staff in the procedures required for operational response measures. The concept of flood management for Environment Waikato is that information and warnings received into Environment Waikato’s Hamilton Office at any time are to be brought to the immediate attention of the incumbent Level 1 Emergency Management Officer (EMO). The Level 1 EMO is the appointed Environment Waikato Flood Manager and is responsible for co-ordinating and controlling all Environment Waikato operational matters pertaining to flood events in the Waikato Region. Page viii Doc # 761111 Table of Contents Flood Warning Procedures Manual 2003.................................................................................... 1 External Emergency Contacts: ........................................................................................................... i Councillor Phone/Fax Numbers ........................................................................................................ ii Flood Warning Procedures Manual.............................................................................................iv Flood Warning Procedures Manual..............................................................................................v Record of Amendments..................................................................................................................... v Why does Environment Waikato provide Flood Warnings? ........................................................vi Purpose of Manual.................................................................................................................... viii The Purpose and Objectives of Flood Warning........................................................................... 1 Customers .................................................................................................................................. 2 Content of Flood Warnings ......................................................................................................... 3 The Flood Warning Team ..........................................................................................................