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Floodplain Risk Management Study and Plan

North Brother Local Catchments Floodplain Risk Management Study and Plan

A floodplain risk management study of the North Brother Local Catchments area. The study area is located on the Mid North Coast of NSW, and includes parts of the villages of Kew, Lakewood, West Haven, Laurieton and Deauville which are situated at the foot of North Brother Mountain. Development in the area has occurred in sometimes unsuitable locations as a result of poor drainage planning, leading to localised nuisance flooding on residential properties at a number of locations on a regular basis. Numerous gullies and watercourses drain from the North Brother Mountain through the developed areas, which over time have been piped, filled, crossed by road embankments or redirected, contributing to the existing flooding problems. Localised flooding in some areas may interact with and be exacerbated by mainstream flooding in Queens Lake, Stingray Creek and Camden Haven River. This report is the Floodplain Risk Management Study and Plan (FRMSP) which defines the flooding behaviour and its impact on the community, identifies and appraises potential management measures to reduce existing and future flood risk. Based on the study findings, a list of prioritised measures for consideration and implementation by Council has been prepared. Note that this study focusses on overland flooding resulting from runoff from North Brother Mountain and surrounding areas. Riverine flooding is addressed separately in the Camden Haven and Lakes System Flood Study (Worley Parsons, 2013), prepared for Council. Objectives of the study include: • Develop and calibrate hydrologic and hydraulic models to estimate flooding conditions for a range of design events and for a climate change scenario. • Identify flood problem priority areas and identify and assess structural and non-structural mitigation measures to manage flood risk. • Review existing planning, policy and emergency management for gaps and inconsistencies relating to floodplain planning, then develop proposed amendments to address residual flood risk. • Prioritise the works and measures, including economic and multi criteria appraisal of options. • Develop an implementation program for recommended works and measures including timing, responsibility and sources of funding. • Conduct consultation with the community and key stakeholders throughout the study to obtain information and intelligence for input into the study. Gauges the perceptions of the community on flooding matters. Obtain feedback on the findings and recommendations of the study.

Additional Information

Field Value
Title North Brother Local Catchments Floodplain Risk Management Study and Plan
Commission Date 30 June 2017
Publication Date 16 December 2021
Themes Emergency Management
Spatial Extent
Map data © OpenStreetMap contributors
Council/LGA Port Macquarie-Hastings Council
Author/ Prepared by Jacobs Pty Ltd
Publish date 24 March 2022
Update date 6 April 2022
River Basin 207 - Hastings
Place Name Laurieton
Approval State Approved
Submitted for approval 6 April 2022
Submitted by Mark Ian Edenborough
Approved 6 April 2022
Approved by dstazic
Identifier e303b8e7-ca28-460b-90ab-9499d8bed73b