- Title
- Impact of climate change and land use on groundwater hydraulic fluctuations
- Creator
- Mohammad, Adnan; Bekele, Dawit N.; Chadalavada, Sreenivasulu; Warner, Scott; Naidu, Ravi
- Relation
- Hydrology & Water Resources Symposium 2022 (HWRS 2022): The Past, the Present, the Future. Proceedings of the Hydrology and Water Resources Symposium, HWRS 2022 (Brisbane, QLD 30 November - 2 December, 2022) p. 997-1007
- Relation
- https://search-informit-org.ezproxy.newcastle.edu.au/doi/book/10.3316/informit.9781925627640
- Publisher
- Engineers Australia
- Resource Type
- conference paper
- Date
- 2022
- Description
- Recently, increasing attention has been paid to the impact of climate change and land use on sustained groundwater drawdown of aquifer potentiometric heads due to climatic and anthropogenic factors. The subsequent changes in groundwater geochemistry of contaminated lands must be explored in more detail. Climatic factors such as rainfall, temperature, and evapotranspiration significantly affect the magnitude of groundwater level (GWL) fluctuations. This research examines the decades of metrological, hydrological, and land use data of case study sites at two different geographical locations where anthropogenic activities (pasture lands) in New South Wales, Australia were minimal. The results demonstrate that many parameters' contribution and interaction with GWL fluctuations can generate a better understanding of groundwater management for contaminated land. Presented here is a critical analysis of rare datasets (1969-2012) of groundwater tables and climatic factors obtained from the data NSW and Bureau of Metrology government databases. Outcomes of the Mann-Kendall trend analyses of GWL and climatic factors revealed a significant GWL drawdown across the catchment well (P < 0.05) at both cases study sites despite land-use scenarios. The contribution from seasonal fluctuation is typical for arid areas of scarce rainfall seasons followed by long dry climates. It can be concluded that overall increased groundwater drawdown in the Condobolin area where there are less anthropogenic activities with different land use is mainly attributable to climatic factors. The Wee Waa area which is predominantly pastureland exhibited similar features. This study highlights the significant interaction between GWL, and climate change as revealed by analysing the long-term climatic data. More focus on how to resolve the issues wrought by climate change is required to reverse sustained drawdown in GWL, which has significantly and serious implications for contaminated land management.
- Subject
- climate change; groundwater; contaminated land management; land use; SDG 6; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1488764
- Identifier
- uon:52529
- Identifier
- ISBN:9781925627640
- Language
- eng
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