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.
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0269-02-C1 12 October 2015 8 3 AVAILABLE DATA 3.1 DATA OVERVIEW Available data for Todd River hydrologic modelling consist of: Rainfall; Stream flow; and Topographic information. The rainfall data consists of continuous (pluviograph) records from a number of rainfall stations located across the catchment. The stream flow data consists of continuous water levels recorded at several stream gauging stations located along Todd River and its tributaries. Rating curves are used to convert recorded water levels at stream gauging stations to flood discharges. Topographic data is used to define the drainage network and catchment boundary of the Todd River. All data used in the study, other than topographic data, were provided by the Department of Natural Resources, Environment, The Arts and Sport (NRETAS). 3.2 RAINFALL DATA Table 3.1 shows the available rainfall data from rainfall (pluviograph) stations within the Todd River catchment upstream of the Emily Creek confluence. The locations of these stations are shown in Figure 3.1. 3.3 STREAMFLOW DATA Table 3.2 shows the available stream flow data from stream gauging stations located within the catchment upstream of the Emily Creek confluence. The locations of these stations are shown in Figure 3.1.