East Hampshire Chichester Chalk Groundwater Model Update

Historically the East Hampshire Chichester Chalk model has underpinned the outcomes of many Restoring Sustainable Abstractions (RSA) and Water Framework Directive (WFD) water resource investigations. Portsmouth Water use the model to feed into their Water Resources model which in turn informs the Water Resource Management Plan and Drought Plans. This model was last updated in 2012 and is a valuable asset to the Environment Agency, which needs to be maintained so it is fit for purpose. It is essential for sharing a common conceptual understanding with key stakeholders to support optimal resource development therefore the model should be updated now. This project will involve reviewing and updating the conceptual model, incorporating recently acquired geological information, updating the relevant datasets (including PE and rainfall), updating the model with Modflow6 code, refinement/calibration, and model scenarios and reporting.