Floodplain Management Study Spring Street Drain, Muddy Creek and Scarborough Ponds - Volume 1

#Objective\r\nThis Floodplain Management Study defines the nature and extent of the flood hazard in the three\r\ncatchments. It also identifies and assesses strategies and measures aimed at reducing the impact\r\nof flooding on both existing and future development, and measures to prevent future development\r\nfrom making flooding worse.\r\n\r\nThe results of this Floodplain Management Study are being used to prepare a Floodplain\r\nManagement Plan (FPMP). The objective of the FPMP is to establish a cost-effective floodplain\r\nmanagement strategy for the area and to recommend a programme for implementation of the Plan.\r\n\r\nThe Study Brief is attached as Appendix A.\r\n#What is in the Study\r\nThe Floodplain Management Study and Plan will not totally eliminate flooding. Flooding is a natural\r\nphenomenon which cannot be fully controlled by human works. In fact, excessive artificial controls\r\nare likely to be very costly and to have adverse environmental effects. Therefore the Floodplain\r\nManagement Study and Plan aim to provide a package of best management practices which give a\r\nbalance between reducing flood hazard and flood damages, allowing appropriate development, and\r\nprotecting and enhancing the environment of the floodplain.\r\n\r\nThis Report has been divided into the following sections:\r\n\r\n* __Section 1__: Introduction (page 1)\r\nEstablishes the context and basis for the plan.\r\n* __Section 2__: Background (page 5)\r\nDescribes the study process, including previous studies, and the background technical\r\ninformation which is available. It includes a review of the previous Muddy Creek Flood\r\nStudies.\r\n* __Section 3__: Existing Flood Behaviour (page 15)\r\nSummarises the available data and modelling results concerning flood behaviour.\r\n* __Section 4__: Social and Economic Impacts of Flooding (page 23)\r\nExamines the potential flood damages and other social and economic effects of flooding for a\r\nrange of flood events, including an extreme flood.\r\n* __Section 5__: Choosing the Designated Flood (page 28)\r\nDiscusses the issued to be considered by Council in choosing a designated flood for\r\nRockdale, and recommends that the 1% AEP flood be adopted.\r\n* __Section 6__: Available Floodplain Management Options (page 35)\r\nDescribes in broad terms the range of flood mitigation and other management works and\r\nother measures available to address the existing, future and residual flooding problems in the\r\nstudy area.\r\n* __Sections 7, 8 and 9__: Options for Management Areas (page 48)\r\nThese three sections describe in detail, for the Muddy Creek, Spring St Drain and\r\nScarborough Ponds catchments respectively, the feasible options and their likely benefits and\r\ncosts.\r\n* __Section 10__: Assessment of Management Options (page 86)\r\nReviews the financial aspects and the justification for the proposed management measures,\r\nidentifies priorities and possible sources of funding. These issues will be further addressed in\r\nthe future Floodplain Management Plan.\r\n* __Section 11__: References (page 90)\r\nTechnical detail which supports the main report is provided in the Appendices, in Volume 2.