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
2018-03
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
English
Groundwater; Northern Territory; Western Davenport Water Control District; Conceptual mode
Northern Territory Governmnet
Palmerston
version 2.0
WRD Technical Report 27/2017
ix, 127 pages : colour illustration and maps ; 30 cm
application/pdf
9781743502976
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
https://creativecommons.org/licenses/by/4.0/
https://hdl.handle.net/10070/842058 [LANT E-Publications: Development of a Groundwater Model for the Western Davenport Plains, version 1.1]
https://hdl.handle.net/10070/858845
https://hdl.handle.net/10070/858846
Western Davenport WCD Groundwater Model (v2.0) Water Balance CloudGMS 97 the full thickness of the aquifers defined in the model as bore construction costs increase and pumping efficiency decrease with deeper groundwater levels. Jolly et al (2005) suggested that the economic depth of extraction for the Roe Creek borefield was 300 metres below ground level based on information provided by Power and Water Corporation. It is likely that this depth is an over estimate for the Western Davenport region and a value of 100 150 metres below ground level is probably more realistic. Based on this assumption and a storage value of 0.04 the following range of storage estimates have been determined for the central zone. Table 32 Groundwater storage in the aquifers to a depth of 100 and 150 mBGL within the central subcatchment zone (water balance zone 2). Resource depth Area. [sq. km] Storage Depth [mm] Storage Vol. [GL] 100 mBGL 7991 2800 22375 150 mBGL 7991 4500 36000