Alice Springs Flood Investigation and Floodplian Mapping Study
WRM Water & Environment Pty Ltd; Northern Territory. Department of Lands, Planning & the Environment
E-Publications; PublicationNT; E-Books; EXTA1463
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.
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
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
WRM Water & Environment Pty Ltd
vii, 95 pages : colour maps ; 30 cm.
Check within Publication or with content Publisher.
0269-02-C1 12 October 2015 63 7.4 APRIL 2000 CALIBRATION 7.4.1 Recorded Stream Gauge Data Figure 7.14 shows the recorded and predicted water level hydrographs at the Anzac Oval stream gauge for the April 2000 flood event calibration. No recorded water level data is available for the Heavitree Gap and Amoonguna stream gauges for this event. The following is of note with regards to the calibration at the Anzac Oval stream gauge. An excellent fit has been achieved between recorded and predicted water levels at the Anzac Oval stream gauge, particularly for the first and third (main) flood peaks. The model predicts a second peak that is not reflected in the recorded water level data. This is consistent with the URBS model calibration for this event (refer Figure 5.13). The TUFLOW model matches very well with the recorded peak water level and hydrograph shape, despite the URBS model calibration underestimating the peak discharge at Anzac Oval. Despite the lack of available data, the April 2000 flood event calibration is considered acceptable. Figure 7.14 Recorded and Predicted Water Level Hydrographs at Anzac Oval, April 2000 Flood Event 7.5 VERIFICATION EVENTS Table 7.3 provides a summary of the TUFLOW model verification against recorded stream gauge data for the January 2010, February / March 2010 and April 2010 flood events in order to
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