Appendix D - Engineering Assessment · OPW26/0090

 Danya Cook Town Planning
 Danya Cook
 PO Box 9410
 Pacific Paradise, 4564

 15 June 2026
RE: Reconfiguring a Lot
28 Overlander Avenue, Cooroy
Stormwater Assessment




Dear Danya,


This letter has been prepared in support of a Reconfiguring a Lot development approval to the Noosa Shire
Council (Council). The proposed reconfiguration is for a 1 into 2 subdivision of a Low-Density Residential
lot at 28 Overlander Avenue, Cooroy QLD 4563 (Lot 34 on RP179733). The purpose of this Stormwater
Assessment letter is to provide advice in relation to the proposed development’s stormwater obligations
under the Noosa Plan 2020 Planning Scheme.

Concept Civil Engineering plans have been attached to this letter. The attached plans also include Water
and Sewer connection works for separate review by Unitywater.

Existing Site and Lawful Point of Discharge (LPD)
The existing site currently comprises of a residential dwelling . The site currently appears to discharge via
overland flow to:
    - LPD1: Overland flow over the site’s frontage and into Overlander Avenue. Flows are collected by
         the Council-owned stormwater network in the road reserve and directed to the Northwest.
    - LPD2: Overland flow over the site’s rear boundary and into the Noosa District State High School
         (Lot 210 on MCH4371). There is a Council-mapped stream to the Norrth of the site that collects the
         overland flow.

It is proposed to maintain the existing LPD arrangement. It is proposed to formalise LPD1 for Lot 1 with a
new kerb-adaptor connection to Overlander Avenue. Some negligible post-development nuisance flows
may occur from Lot 1 over the Lot 2 driveway, and from Lot 2 in to neighbouring lot 33 on RP179733,
however these are consistent with the pre-development arrangement and appear to be managed by
fencing and landscaping along the property boundary.



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