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) Parameter Estimation CloudGMS 78 Bore Id. Ave. Head Bore Id. Ave. Head Bore Id. Ave. Head Bore Id. Ave. Head RN005950 342.40 RN012706 392.00 RN016798 452.20 RN018404 363.70 RN005951 349.00 RN012976 441.90 RN016799 465.10 RN018441 369.80 RN005952 362.90 RN013201 365.90 RN016915 471.10 RN018442 366.00 RN006214 324.70 RN013323 376.10 RN016917 472.10 RN018443 369.90 RN006257 353.40 RN013324 407.00 RN016932 351.00 RN018445 363.30 RN006258 355.30 RN013345 439.60 RN017177 375.60 RN018451 368.20 RN006259 353.50 RN013722 409.90 RN017310 508.10 RN018452 363.90 RN006260 351.20 RN013752 377.90 RN017311 506.90 RN018453 362.80 RN006261 351.10 RN013753 349.90 RN017312 509.40 RN018454 360.50 RN006434 349.40 RN013754 349.40 RN017313 506.10 RN018455 362.90 RN006437 345.10 RN013755 340.60 RN017585 372.20 RN018456 364.00 RN006438 344.40 RN014354 377.10 RN017586 369.10 RN018458 365.10 RN006439 343.80 RN014355 373.60 RN017587 367.20 RN018460 362.20 RN006440 345.20 RN014356 371.30 RN017588 367.90 RN018909 364.60 RN006442 346.60 RN014357 369.90 RN017589 368.70 RN018910 367.80 RN006890 386.90 RN014519 360.90 RN017590 367.10 RN018931 364.30 RN006891 389.20 RN014528 353.50 RN017591 365.80 RN018932 366.30 RN006895 373.00 RN014562 377.00 RN017592 361.70 RN018933 367.10 RN006896 368.00 RN014602 424.80 RN017593 367.80 RN018632 364.50 RN006897 407.40 RN014787 459.10 RN017594 370.30 RN019041 351.00 RN006898 396.10 RN014789 330.30 RN017595 368.40 RN019040 354.00 RN007016 384.80 RN014832 477.20 RN017799 418.80 RN007017 366.00 RN014833 474.40 RN017800 440.20 6.4. Steady state parameter estimation results The parameter estimation process resulted in a distribution of hydraulic conductivity, daily infiltration rate (mm/d) and root depth. 6.4.1. Hydraulic conductivity distribution The final optimised hydraulic conductivity values for each of the geological units are presented below in Table 18. The hydraulic conductivity values are consistent with the reported values in section 3.8. Table 18 Final saturated zone hydraulic parameters. Name Code Kh Kv Sy Ss (m/s) (m/d) (m/s) (m/d) Cenozoic 1 2.11E-05 1.83E+00 5.44E-06 4.70E-01 0.04 1e-04 Soil 2 1.00E-06 8.64E-02 1.00E-06 8.64E-02 0.04 1e-04 Dulcie 3 9.52E-06 8.23E-01 9.52E-07 8.23E-02 0.04 1e-05 Arrinthrunga 4 8.65E-06 7.47E-01 8.65E-07 7.47E-02 0.04 1e-05 Chabalowe 5 2.15E-05 1.85E+00 2.15E-06 1.85E-01 0.04 1e-06 Fractured rock 6 1.00E-06 8.64E-02 1.00E-06 8.64E-02 0.01 1e-06 Basement 7 5.00E-07 4.32E-02 5.00E-07 4.32E-02 0.01 1e-06