Territory Stories

Development of a Groundwater Model for the Western Davenport Plains

Details:

Title

Development of a Groundwater Model for the Western Davenport Plains

Creator

Knapton, Anthony; CloudGMS Pty Ltd

Commissioned by

Northern Territory. Department of Environment, Parks and Water Security

Collection

E-Publications; E-Books; PublicationNT; WRD Technical Report 27/2017

Date

2018-03

Location

Western Davenport Water Control District

Abstract

CloudGMS has been commissioned by DENR to develop a numerical groundwater model of the aquifers within the central area of the WDWCD to improve confidence in the sustainability of the groundwater resources, as this is the area within the WCD with greatest potential for intensive development.

Notes

Made available by via Publications (Legal Deposit) Act 2004 (NT); Prepared for Dept Environment and Natural resources

Table of contents

Executive summary -- 1 Background -- 2 Physical -- 3 Available data -- 4 Conceptual model -- 5 Model design & construction -- 6 Parameter estimation -- 7 Water balances -- 8 Sensitivity analysis -- 9 Predictive scenarios -- 10 Conclusions -- 11 Reference -- 12 Document history and version control -- Appendix A - Groundwater level hydrographs - Appendix B - Alek range horticultural farm sub-regional modelling

Language

English

Subject

Groundwater; Northern Territory; Western Davenport Water Control District; Conceptual mode

Publisher name

Northern Territory Governmnet

Place of publication

Palmerston

Edition

version 2.0

Series

WRD Technical Report 27/2017

Format

ix, 127 pages : colour illustration and maps ; 30 cm

File type

application/pdf

ISBN

9781743502976

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Related links

https://hdl.handle.net/10070/842058 [LANT E-Publications: Development of a Groundwater Model for the Western Davenport Plains, version 1.1]

Parent handle

https://hdl.handle.net/10070/858845

Citation address

https://hdl.handle.net/10070/858846

Page content

Western Davenport WCD Groundwater Model (v2.0) Available Data CloudGMS 17 Figure 3-4 Schematic map of southern Wiso and Georgina basins showing the locations of Palaeozoic depositional troughs. Lander Trough, along southern Wiso Basin margin, is on trend with Dulcie trough of the Georgina Basin to southeast, both of which are separated from Proterozoic rocks of Aileron Province by a series of thrust fault systems. 3.3.2. History Sedimentation commenced in the early Middle Cambrian with deposition of marine carbonates and overlying shallow marine to intertidal sediments. During the Late Cambrian uplift, erosion occurred, possibly as part of the Delamerian Orogeny. This was followed by deposition of shallow marine to fluvial sediments during the Late Cambrian to Early Ordovician with shallow marine carbonates and siliciclastics following later in the Ordovician after which deposition ceased. In the Devonian, the Aileron Province of the Arunta Block to the south was uplifted during a phase of the Alice Springs Orogeny leading to deposition of Devonian to Early Carboniferous sediments along the southern margin of the basins. The most significant faulting is along the southern margin of the Lander Trough. A series of parallel, east-south-east trending faults with an overall displacement of over 2,000 m, places sediments of the Wiso Basin against the crystalline rocks of the Aileron Province (Arunta Region). 3.4. Stratigraphy The area contains, from oldest to youngest geology the sedimentary and volcanic rocks of the Archean Arunta Complex and Proterozoic Davenport province rocks of the Tennant Creek Inlier, flatlying Palaeozoic and Devonian aged sandstones of the Georgina Basin / Wiso Basin sediments, and Quaternary and Tertiary sedimentary deposits.