Flood Study BSM Job2013 08 Date 15 Sep 2014 Revised

List Of Contents

1.    Summary                                                              3

2.    Introduction                                                         4

3.    Response To Noosa Council Information Request                        5

4.    Response To Saunders Submission                                      8

5.    Stormwater Detention Requirement                                     9

6.    Stormwater Discharges To No 2 Pearsons Road                          10

7. Runoff Rates To Floodway Model                                          12
7.1 Catchment Areas And Subdivision                                        12
7.2 Design Rainfall Data                                                   12
7.3 Model Calibration                                                      14
7.4 Linkage From Catchment Model To Floodway Model                         15

8.    Floodway Profiles, Pre-Development                                   17

9. Floodway Profiles, Post-Development                                     21
9.1 Mitigation Concept For Increased Stormwater Runoff                     21
9.2 Model Simulation                                                       21
9.3 Sensitivity Test                                                       22

10. Certification                                                          23

List Of Figures (following text)

1     Locality And Lot Plan
2     Urbs Models Of Stormwater Detention Requirement
3     Proposed Change In Discharge Scenarios To No 2 Pearsons Road
4     Catchment Subdivision For Pre-Development Urbs Model
5     Catchment Subdivision For Post-Development Urbs Model
6     XPStorm Hydraulic Model Network
7     Photographs Of Eastern Floodway On 25 November 2013
8     Photographs Of Western Floodway On 25 November 2013
9     Proposed Floodway Modifications, Bridge And Bio-Detention Ponds
10    Longitudinal Floodway Profiles
11    Floodway Cross-Section Changes – West Tributary
12    Footbridge And Bio-Basin Schematics
13    Flood Levels And Flood Boundaries

Appendices

A.    Design Rainfall Data
B.    Rational Method Calculations Of Floodway Inflows, Pre-Development
C.    Rational Method Calculations Of Floodway Inflows, Post-Development
D.    Floodway Storage Volumes


     Brisbane Stormwater Management Pty Ltd Document File: ValkevSDF.Doc   Page 2