International Association of Hydrogeologists Australia

IAHWA – May Technical Presentation – Hydrogeology of the West Canning Basin

Monday 18 May, 2015

Influence of Conceptual Model Uncertainty on Recharge Processes for the Wallal Aquifer System in the West Canning Basin

When                   20th May 2015, 5:30 pm to 7:00 pm

Where                  Fortescue Centre, Level 3/87 Adelaide Tce, East Perth WA.

Fellowship 5:30-6pm (Plain Street Bar). Presentation upstairs from 6pm.

IAH Western Australia is pleased to host Jon Hanna who will present recent work undertaken at the West Canning Basin

Multiple numerical models were used to test whether conceptual model uncertainty and different degrees of hydrogeological complexity mattered in replicating a recharge signal and sustainable yield from a large regional aquifer system. The Wallal Aquifer is a predominantly confined aquifer in the West Canning Basin Western Australia. 3-D geological modelling was used to create multiple realisations of the stratigraphy using a range of possible depositional and post depositional processes. Each of the geological models was discretised into groundwater flow models and calibrated. The modelling tested if surficial recharge from cyclonic events in the south of the study area occurs as a widely spread diffuse flux, or is limited to discrete recharge windows potentially associated with palaeochannels. This study was completed as part of an MSc research project finalised in 2014.

 This talk is presented by Jon Hanna, a Senior Hydrogeologist who currently works for the Resource Planning Hydrology team at BHP Billiton Iron Ore. Jon has completed a MSc in 2013 with particular focus on the West Canning Basin.

This event is free to attend. Registration isn’t required.

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