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 43 Figure 3-17 Major vegetation classes (NVIS based on southern NT land systems mapping) with mapped wetland features after Duguid (2009). 3.11.3. Leaf Area Index (LAI) Areas of vegetation that use groundwater typically exhibit low seasonal variability of photosynthetic activity. The inter-annual variability of the vegetation activity can therefore contain useful information to assist mapping of groundwater discharge areas (Tweed, LeBlanc, Webb, & Lubczynski, 2007). Vegetation that is relatively lush in comparison to surrounding areas is often associated with discharge areas. Leaf area index (LAI) is often used as an indicator to identify this type of vegetation. LAI is defined as the one sided green leaf area per unit ground area in broadleaf canopies. LAI is therefore considered a strong indicator of water availability in semi-arid to arid environments (Hatton & Evans, 1998) and can be used as a proxy for vegetation water use. Total LAI was estimated using the product MOD15A2 centred on the study area (201 km wide 201 km length) from the MODIS 163 Land Product Subsets project (http://daac.ornl.gov/MODIS/). ORNL DAAC. 2008. MODIS Collection 5 Land Products Global Subsetting and Visualization Tool. ORNL DAAC, Oak Ridge, Tennessee, USA. Accessed June 21, 2016. Subset obtained for MOD15A2