Attachment C - Stormwater Mangement Plan

1.0    INTRODUCTION:

This Site Based Stormwater Management Plan (SWMP) has been prepared by
Marshall Civil Engineering in support a minor change to the existing Material Change
of Use which was approved by Noosa Shire Council as DA 51987.2966.04 and issued
in May 1987.

The location and existing details of the land are shown in APPENDIX A.

This document outlines a “nature based” approach to stormwater quantity associated
with the development on this site and provides a Management Plan to ensure that
there will be no off-site stormwater impacts.

2.0    UTILISING NATURE BASED STORMWATER MANAGEMENT TECHNIQUES
       FOR STORMWATER CAPTURE/RE-USE TO ENSURE NO STORMWATER
       RELATED OFF-SITE IMPACTS
       1. Background

       Pollution via stormwater (including the amount of nutrient content) is becoming
       increasingly important as development continues to put increasing pressure on
       our extremely important waterways which are already under stress. The
       importance of sustainable water management, including Water Sensitive Urban
       Design (WSUD), is becoming more widely recognised by both Councils and
       communities alike.
       Over recent years Noosa Council has already embraced a number of WSUD
       based developments and these present to the public as an honest and pleasing
       attempt to introduce nature based stormwater systems to the developed world.

       2. What is Water Sensitive Urban Design?

       Water Sensitive Urban Design (WSUD) integrates urban water cycle
       management with urban planning and design, with the aim of mimicking natural
       systems to minimise negative impacts on the natural water cycle and receiving
       waterway the Noosa River which in turn flows into Laguna bay.
       It also offers an alternative to the traditional capture and conveyance approach
       to stormwater management by acting at the development site (at the source),
       and thereby reducing the required size of any required structural stormwater
       system.
       It seeks to minimise impervious surfaces, re-use water on site, and incorporate
       nature based (Vegetated Infiltration & Level Spreader Swales) treatment



 Revision: B – 2nd August 2021
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