Revised Stormwater Mangement Plan

65-67 Elanda Street, Sunshine Beach
Site Based Stormwater Management Plan
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1. Executive Summary
WC Designs Pty Ltd has been engaged to prepare a Conceptual Site Based Stormwater
Management Plan (SWMP) for the proposed townhouse development at 65 & 67 Elanda St,
Sunshine Beach QLD 4567. The land parcel is legally described as Lots 410 & 411 on
RP48112, and located within the Noosa Shire Council.

The development proposes four (4) townhouses on the site, as illustrated by the architectural
plans contained in Appendix A. This report is prepared to support the development
application and provides a site-based stormwater concept design to ensure the stormwater
runoff from the site does not result in actionable nuisance or worsening of discharge to any
properties within its vicinity (upstream, downstream or adjacent to the site) and cast adverse
impact on flooding or the peak discharge flow and duration for all storm events up to the 1%
AEP (Annual Exceedance Probability) storm events.

Hydrological analyses are carried out using run-off routing technique through XP-Storm-
2016. The peak flows are identified for the pre-developed and post-developed scenarios for
all storm events up to 1% AEP (Annual Exceedance Probability). To mitigate the flow
increase, two 7KL above-ground roof water detention tanks are proposed for the
development.




File Name:            WCD-22936 – 65-67 Elanda_SWMP.docx
Revision:             E                                                                    4