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Free Software as a tool to optimize groundwater data management- Phuti Mabotja , Eelco Lukas, Modreck Gomo , Geert-Jan Nijsten and Arnaud Sterckx. Outline. Introduction Methodology Discussion Conclusions Acknowledgements Reference. Introduction.

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  1. Free Software as a tool to optimize groundwater data management- PhutiMabotja, Eelco Lukas, ModreckGomo, Geert-Jan Nijsten and Arnaud Sterckx

  2. Outline • Introduction • Methodology • Discussion • Conclusions • Acknowledgements • Reference

  3. Introduction • Efficient exploitation of water resources • Importance of groundwater • Dependency on groundwater to increase • Efficient data collection and management in groundwater • Importance of software in data management • Focus of the talk • Free and open source software (FOSS)

  4. Methodology • Developers • Security • Functionality • Support and documentations • Usability and scalability • Performance and reliability • Maintenance • Flexibility

  5. Methodology

  6. FC-Method Flow Characteristic Method Developed By: Prof Van Tonder, Dr Gomo and Mr De Lange Download FC-Method

  7. FC (Flow Characteristic)- Method • Single platform: Different analytical methods • FC Method can be used for • Pump test analysis • Slug test analysis • Chemistry of water samples

  8. FC Method

  9. MLU Lite Multi-Layer Unsteady-state Developed By Dr C.J. Hemker http://www.microfem.com/

  10. MLU Lite • Uses single user interface to analyse: • Recovery tests, • Variable discharge tests, • Step-drawdown tests, • Slug tests • Quick estimation of aquifer properties • MLU Lite is limited

  11. MicroFEM Lite Microcomputer Finite-element Method Developed by Dr C.J. Hemker http://www.microfem.com/

  12. MicroFEM Lite • MicroFEM is a finite-element model code • Key modelling features: • Saturated density flow • Multiple aquifer systems and stratified aquifers • Confined, leaky and unconfined conditions • Heterogeneous aquifers and aquitards • Steady-state and transient flow • Limited

  13. MicroFEM Lite

  14. MODFLOW Modular finite-difference flow model Initiated by USGS https://water.usgs.gov/ogw/modflow/

  15. MODFLOW • 3D finite-difference groundwater modelling • MODFLOW stood the test of time • MODFLOW modules can be used to do • Solute transport • Heat transfer • Variable-density flow (including saltwater) • Unsaturated flow • Coupled groundwater/surface-water systems

  16. MODFLOW

  17. QGIS Quantum Geographic Information System Developed by: QGIS Development Team https://www.qgis.org/en/site/forusers/download.html

  18. QGIS • Geographic Information System tool • Competitive GIS software • Free Open source software, highly competitive GIS program • Uses plugins

  19. QGIS

  20. FREEWAT FREE & open source software tools for WATer resource management Developed by Dr R Rossetto et al. http://www.freewat.eu/software-0

  21. FREEWAT • Relatively new project • Plugin • QGIS integrated modelling platform • Tools • Analysis, • Interpretation and • Visualization of hydrogeological and hydro-chemical data

  22. FREEWAT

  23. FREEWAT

  24. PHREEQC pH-REdox-Equilibrium Computer programme By USGS https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/

  25. PHREEQC • Simulate chemical reactions and transport processes in water • Perform a wide variety of geochemical calculations: • saturation indices, • distribution of aqueous species, and • density of a specified solution composition • Inverse modelling

  26. PHREEQC

  27. WISH Windows Interpretation System for Hydrogeologist Developed by Mr Eelco Lukas

  28. WISH • Developed for hydrogeologist • Free for limited purpose: government • CAD system, GIS, Chemical analysis package, pumping test programs • Main data interpretation options include: • Time series analysis • Specialised chemical diagrams • Pumping test analysis • Spatial analysis • Geological and Geophysical logs • Basic statistics • 3D Visualization

  29. WISH

  30. Conclusions • Plenty of free software tools available online • Always consider key aspects • Great effort placed in development of free software programs • FOSS are not without challenges, but have good potential • Training

  31. Acknowledgments • The authors wish to acknowledge the funding support from the SADC-GMI project on “Capacity Building in Groundwater Data Collection and Management (DataCoM) in SADC Member States” which covered expenses of attending the conference. The project is being conducted by the International Groundwater Resources Assessment Centre (IGRAC) in collaboration with the Institute of Groundwater Studies (IGS), University of the Free State

  32. Reference • Braune, E. and Xu, Y. (2010) ‘The role of ground water in sub-Saharan Africa’, Ground Water, 48(2), pp. 229–238. doi: 10.1111/j.1745-6584.2009.00557.x. • Cruz, D., Wieland, T. and Ziegler, A. (2006) ‘Evaluation Criteria for Free / Open Source Software Products Based on Project Analysis’, pp. 107–122. doi: 10.1002/spip.257. • Fitts, C. (2002) Groundwater Sciences. • Hemker, K. and Post, V. (2016) MLU for Windows Well flow modeling in multilayer aquifer systems Aquifer and Pump Test Analysis Software MLU for Windows. • Jakeman, A. J., Barreteau, O. and Rinaudo, R. J. H. J. (2016) Integrated Groundwater Management. • Langevin, C. D. et al.(2017) Documentation for the MODFLOW 6 Groundwater Flow Model, Book 6: Modeling Techniques. doi: , https://doi.org/10.3133/tm6A55. • Lukas, E. (2012) WISH as a water management tool in opencast and underground collieries. • Lukas, E. and Hodgson, F. (2008) WISH manual. • Nienhuis, P. and Hemker, K. (2010) ‘MicroFEM tutorial’, pp. 1–57. • Parkhurst, D. L. and Appelo, C. A. J. (2013) ‘Description of Input and Examples for PHREEQC Version 3 — A Computer Program for Speciation , Batch-Reaction , One-Dimensional Transport , and Inverse Geochemical Calculations. U.S. Geological Survey Techniques and Methods, book 6, chapter A43, 497 p.’, U.S. Geological Survey Techniques and Methods, book 6, chapter A43, p. 6–43A. doi: 10.1016/0029-6554(94)90020-5. • Rossetto, R. et al. (2018) ‘Integrating free and open source tools and distributed modelling codes in GIS environment for data-based groundwater management’, Environmental Modelling and Software. Elsevier, 107(September 2017), pp. 210–230. doi: 10.1016/j.envsoft.2018.06.007. • Singh, A. (2014) ‘Conjunctive use of water resources for sustainable irrigated agriculture’, Journal of Hydrology. Elsevier B.V., 519(PB), pp. 1688–1697. doi: 10.1016/j.jhydrol.2014.09.049. • Vidal, A., Tuinhof, A. and Garduño, H. (2010) ‘Overview on the status of Policy and Legislative framework within SADC and the SADC member states for ensuring the effective and sustainable development and management of groundwater resources’, pp. 1–39. • Wheeler, D. A. (2018) How to Evaluate Open Source Software / Free Software ( OSS / FS ) Programs.

  33. THANK YOU

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