Development of a Groundwater Model for the Western Davenport Plains
Knapton, Anthony; CloudGMS Pty Ltd
Northern Territory. Department of Environment, Parks and Water Security
E-Publications; E-Books; PublicationNT; WRD Technical Report 27/2017
Western Davenport Water Control District
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.
Made available by via Publications (Legal Deposit) Act 2004 (NT); Prepared for Dept Environment and Natural resources
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
Groundwater; Northern Territory; Western Davenport Water Control District; Conceptual mode
Northern Territory Governmnet
WRD Technical Report 27/2017
ix, 127 pages : colour illustration and maps ; 30 cm
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
https://hdl.handle.net/10070/842058 [LANT E-Publications: Development of a Groundwater Model for the Western Davenport Plains, version 1.1]
Western Davenport WCD Groundwater Model (v2.0) Available Data CloudGMS 23 light reddish brown and are both well sorted and well rounded. The sand has buried the preexisting topography and produced the modern essentially flat, nearly featureless landscape vegetated with spinifex and small shrubs. The sands may also form active and stabilised fields of northwest trending linear dunes, which are largely restricted to the south east of the study area. Calcrete (Czk) is common in outcrop in a northwesttrending band through the central portion of the study area near BMR BC2 and to the northwest of Wycliffe Well Creek. The calcrete is probably formed by evaporation of groundwater, similar to the system identified in the Ti Tree Basin (Haines, Bagas, Wyche, Simons, & Morris, 1990). Tertiary aged sediments, up to 100 metres thick, form a non-marine basin unconformably overlying the Palaeozoic rocks. They are generally not observed in outcrop, except for some silty limestone / calcrete near the central portion of the study area, at BMR BC2 and to the northwest of Wycliffe Well. The maximum thickness of the Cenozoic sediments is approximately in the centre of the study area and wedge out to the northeast over the Hatches Group rocks at the foothills of the Davenport Range. The distribution and thickness of the Cenozoic sediments were determined by Tickell, (2014) and are reproduced below in Figure 3-5.