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) Water Balance CloudGMS 95 Table 28 SW zone SZ water budget components for the period 01/01/1970 01/01/2016. Component Vol. [GL] Ave Annual Vol. [GL/yr] Ave Annual Vol. [ML/yr] qrech -2509 -55 -54542 qolszpos 2322 50 50480 qolszneg -1023 -22 -22237 qetsz 441 10 9588 qszin -97 -2 -2112 qszout 78 2 1704 dszsto 261 6 5673 qszabsex 0 0 0 qszdrin -11 0 -250 qszdrout 536 12 11660 Error -2 -0.04 -36 Error % 0.05 0.05 0.05 +ve values are losses to the system -ve values are gains to the system 7.3.2. Central zone SZ water balance The central zone sub-catchment (area 7991 km2) effectively covers the Central Zone management zone with only the northwestern portion not covered by the model. The saturated water balance for the central zone of the model domain is presented below in Table 29. Table 29 Central zone sub-catchment SZ water balance components for the period 01/01/1970 01/01/2016. Component Vol. [GL] Ave Annual Vol. [GL/yr] Ave Annual Vol. [ML/yr] qrech -4377 -95 -95144 qolszpos 1836 40 39915 qolszneg -115 -3 -2509 qetsz 2173 47 47242 qszin -146 -3 -3176 qszout 110 2 2383 dszsto -198 -4 -4297 qszabsex 0 0 0 qszdrin -193 -4 -4202 qszdrout 908 20 19737 Error -2 -0.1 -51 Error % 0.05 0.05 0.05 +ve values are losses to the system -ve values are gains to the system 7.3.3. NE zone SZ water balance The NE zone of the model domain (area 3600 km2) covers the southwestern two thirds of the Davenport Ranges management zone. This is because the northern portion of this management zone