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Stormwater Management Plan - Rev 1
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Page 7
4.2 Existing Drainage Patterns
Data obtained from Noosa Council’s records and detailed site survey indicate that the site has
the following drainage patterns:
Roofwater Runoff
1. The existing commercial building roofwater appears to travel underground and connect
into the existing structure located within the driveway access of Lot 61 on RP69404. Hence,
the roofwater from the existing commercial building was discharged to the Eumundi Noosa
Road kerb and channel.
2. A review of the street frontage of the site along Eumundi Noosa Road indicated that there
is no kerb outlet for Lot 1 on RP849431. Hence, it is assumed that roofwater from the
existing residential building is discharged to the ground or to the existing underground
stormwater infrastructure at the rear of the site via downpipes.
Surface Runoff
1. Surface runoff from the rear portion of Lot 1 on RP230931 generally sheet flows towards
the adjacent site on Lot 61 on RP69404, north and east of the site.
2. Surface runoff from the front portion of Lot 1 on RP230931 generally sheet flows towards
the Eumundi Noosa Road kerb and channel.
3. Surface runoff from Lot 1 on RP849431 generally sheet flows south east towards Lot 46 and
62 on SP132578.
External Catchment
1. There appears to be no external catchment entering the site.
4.3 Lawful Point of Discharge
If pre development flow patterns are to be maintained, the lawful point of discharge for the
proposed development is the existing stormwater drainage infrastructure within Lot 46 and 62 on
SP132578, southeast of the site and the Eumundi Noosa Road kerb and channel.
Refer to Section 5 outlining the Stormwater Quantity aspects of this site and Appendix D for the
Water Quality and Drainage Code.
Site Based Stormwater Management Plan
Proposed Townhouse Development at 101-105 Eumundi Noosa Road, Noosaville
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