Territory Stories

Alice Springs Flood Investigation and Floodplian Mapping Study

Details:

Title

Alice Springs Flood Investigation and Floodplian Mapping Study

Creator

WRM Water & Environment Pty Ltd; Northern Territory. Department of Lands, Planning & the Environment

Editor

Roads, Greg

Collection

E-Publications; PublicationNT; E-Books; EXTA1463

Date

2015-10-12

Location

Alice Springs

Description

Made available via the Publications (Legal Deposit) Act 2004 (NT).; WRM Water & Environment (WRM) was commissioned by the Department of Lands & Planning (DLP) to undertake a flood study of the Todd River in the Alice Springs area. The aim of the study is to develop a 2 dimensional flood model, which allows flood flow in a complex flood plain to be modelled, to determine the extent and severity of riverine flooding in the town of Alice Springs and the Alice Springs rural area south of Heavitree Gap. The purpose of the study is to produce floodplain maps of the Alice Springs and its rural area for land use planning and counter – disaster purposes. This study is an extension of the Alice Springs Farms Area Floodplain Mapping Study (WRM, 2006), undertaken by WRM on behalf of the Department of Planning & Infrastructure in 2006 in order to develop detailed Todd River floodplain maps for the rural area south of Alice Springs.

Table of contents

1. INTRODUCTION -- 2. CATCHMENT DESCRIPTION -- 3. AVAILABLE DATA -- 4. CALIBRATION AND AND VERIFICATION EVENTS -- 5. HYDROLOGIC MODEL CALIBRATION AND VERIFICATION -- 6. HYDRAULIC MODEL DEVELOPMENTLOPMENT -- 7. HYDRAULIC MODEL CALIBRATION -- 8. FLOOD FREQUENCY ANALYSIS -- 9. DESIGN EVENT HYDROLOY -- 10. DESIGN FLOOD LEVELS AND EXTENTS -- 11. CONCLUSION -- 12. REFERENCES

Language

English

Subject

Flood control -- Northern Territory -- Alice Springs; Flood damage prevention -- Northern Territory -- Alice Springs; Floodplain management -- Northern Territory -- Alice Springs; Alice Springs Flood Investigation; Floodplain Mapping

Publisher name

WRM Water & Environment Pty Ltd

Place of publication

Darwin (N.T.)

Series

EXTA1463

Format

vii, 95 pages : colour maps ; 30 cm.

File type

application/pdf.

Copyright owner

Check within Publication or with content Publisher.

Parent handle

https://hdl.handle.net/10070/259732

Citation address

https://hdl.handle.net/10070/494349

Page content

0269-02-C1 12 October 2015 vi Figure 5.13 Recorded (R) and Predicted (C) Discharge Hydrographs, 20 - 24 April 2000, Todd River at Anzac Oval 40 Figure 6.1 TUFLOW Model Configuration 45 Figure 7.1 Recorded and Predicted Water Level Hydrographs at Anzac Oval, March 1983 Flood Event 53 Figure 7.2 Recorded and Predicted Water Level Hydrographs at Heavitree Gap, March 1983 Flood Event 53 Figure 7.3 Recorded and Predicted Water Level Hydrographs at Amoonguna, March 1983 Flood Event 54 Figure 7.4 Comparison of Surveyed Debris Marks and Predicted Peak Water Levels, Charles River, March 1983 Flood Event 54 Figure 7.5 Comparison of Surveyed Debris Marks and Predicted Peak Water Levels, Todd River, Kempe Street to Ilyiperenye Hill, March 1983 Flood Event 55 Figure 7.6 Comparison of Surveyed Debris Marks and Predicted Peak Water Levels, Todd River, Charles River to Kempe Street, March 1983 Flood Event 55 Figure 7.7 Recorded and Predicted Water Level Hydrographs at Anzac Oval, March / April 1988 Flood Event 56 Figure 7.8 Recorded and Predicted Water Level Hydrographs at Heavitree Gap, March / April 1988 Flood Event 57 Figure 7.9 Recorded and Predicted Water Level Hydrographs at Amoonguna, March / April 1988 Flood Event 57 Figure 7.10 Comparison of Surveyed Debris Marks and Predicted Peak Water Levels, Charles River, March / April 1988 Flood Event 59 Figure 7.11 Comparison of Surveyed Debris Marks and Predicted Peak Water Levels, Todd River, Kempe Street to Ilyiperenye Hill, March / April 1988 Flood Event 59 Figure 7.12 Comparison of Surveyed Debris Marks and Predicted Peak Water Levels, Todd River, Charles River to Kempe Street, March / April 1988 Flood Event 60 Figure 7.13 Predicted Flood Extent and Depth Profile, March / April 1988 Flood Event 62 Figure 7.14 Recorded and Predicted Water Level Hydrographs at Anzac Oval, April 2000 Flood Event 63 Figure 8.1 Distribution of Peak Annual Flows, Todd River at Wigley Gorge 68 Figure 8.2 Distribution of Peak Annual Flows, Todd River at Wills Terrace / Anzac Oval 69 Figure 10.1 Todd River Design Flood Long Section Profiles, Amoonguna to Ilyiperenye Hill 77 Figure 10.2 Todd River Design Flood Long Section Profiles, Ilyiperenye Hill to Kempe Street 77 Figure 10.3 Todd River Design Flood Long Section Profiles, Kempe Street to Charles River Confluence 78 Figure 10.4 Charles River Design Flood Long Section Profiles, Todd River Confluence to Dixon Street 78 Figure 10.5 100 Year ARI Flood Extent and High Flood Hazard Areas 83 Figure 10.6 100 Year ARI Flood Fringe Mapping 84 Figure A.1 20 Year ARI Design Flood Depths and Flood Extent 90 Figure A.2 50 Year ARI Design Flood Depths and Flood Extent 91 Figure A.3 100 Year ARI Design Flood Depths and Flood Extent 92


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