Stormwater Management Plan 12_05_26

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1.0 Introduction
Arcos Unit Group Pty Ltd (Arcos) has been commissioned by Coast2Bay Housing Group to prepare
this Engineering Services Report, including stormwater management strategy, and drawings as a part
of an OPW development application with Noosa Shire Council (NSC).
This report addresses and provides advice around critical civil engineering issues, including (but not
limited to) feasibility of the proposed layout, site works, earthworks, access, service provisions, and
management of stormwater quality, quantity, and flooding.



2.0 Proposed Development
The proposed development calls for 25 new Affordable Rental Premesis (small dwellings) in a multi-
residential format at 62 Lake MacDonald Drive, Cooroy. The site is formally described as Lot 105 on
SP118458, has an area 3,163m2, and is currently zoned as ‘Community Facilities’. The Cooroy Local
Plan Area applies to the site, along with the following overlays:
•   Biodiversity, Waterways, and Wetlands Overlay
•   Landslide Hazard Overlay
•   Extractive Resource Overlay
•   Local Government Infrastructure Plan
The site is currently vacant and sits adjacent to a larger subdivision development which is already under
construction (refer NSC Application No. OPW/25/0057) and shall provide a new road frontage for site
access along the eastern bounday, and services (inclduing sewer and stormwater outfalls). The site is
also bound by Lake MacDonald Drive to the west. A locality plan can be seen in Figure 1 below.
The site is naturally sloped towards the new subdivision road (along its eastern boundary), and the built
form of the development follows the natural topography, providing three separate levels, but adhering
to Council’s height limits. A development site layout plan, showing the general arrangement of the site
has been included in Figure 2.
The purpose of the development is to provide high quality, yet affordable social housing to the local
community.




FIGURE 1: SITE LOCALITY (SOURCE: GOOGLE MAPS)




12 May 2026