Civil Engineering Report

WATER QUALITY & DRAINAGE CODE
Performance Criteria and Acceptable Solution
23 Bottlebrush Avenue, Noosa Head
22 May 2025
             PERFORMANCE OUTCOMES                                                ACCEPTABLE OUTCOMES                                                             RESPONSE
PO12                                                                AO12.1
                                                                                                                                     No increase in peak runoff from site will occur
Development protects in-stream ecology by                           Where run-off from or within the site passes                     as part of the proposed development. Refer
maintaining pre-development low flow                                through or drains to natural                                     Stormwater Management Plan for further
discharge regimes and maintaining fish                              channels, waterways or wetlands, development                     information.
passages.                                                           protects in-steam ecology by maintaining pre-
                                                                    development low flow discharge regimes in
                                                                    accordance with the frequent flow
                                                                    management objectives in PSP6 Engineering
                                                                    Design Standards - Roads, drainage and
                                                                    earthworks
                                                                    AO12.2
                                                                    Instream structures such as roads, bridges,
                                                                    culverts, and other stormwater infrastructure do
                                                                    not cause barriers to fish passage and facilitate
                                                                    the movement of terrestrial and aquatic fauna
                                                                    along waterway corridors.
                                                                    AO12.3
                                                                    Benthic substrate retains a continuous grade
                                                                    with the direction of flow consistent with the
                                                                    natural bed profile.




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