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A Comparative Study of Data-driven Models for Groundwater Level Forecasting

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Abstract

Irregular rainfall patterns and limited freshwater availability have driven humans to increase their dependence on groundwater resources. An essential aspect of effective water resources management is forecasting groundwater levels to ensure that sufficient quantities are available for future generations. Prediction models have been widely used to forecast groundwater levels at the regional scale. This study compares the accuracy of five commonly used data-driven models–Holt–Winters’ Exponential Smoothing, Seasonal Autoregressive Integrated Moving Average, Multi-Layer Perceptron, Extreme Learning Machine, and Neural Network Autoregression for simulating the declining groundwater levels of three monitoring wells in the National Capital Territory of Delhi in India. The performance of the selected models was compared using coefficient of determination (R2), Root Mean Squared Error (RMSE) and Mean Absolute Error (MAE). Results indicate that Multi-Layer Perceptron had high R2 while fitting the training data and least RMSE and MAE during testing, thus proving to be more accurate in forecasting than the other models. Multi-Layer Perceptron was used to forecast the groundwater level in the study wells for 2025. The results showed that the groundwater level will decline further if the current situation continues. Such studies help determine the appropriate model to be used for regions with limited available data. Additionally, predictions made for the future will help policymakers understand which areas need immediate attention in terms of groundwater management.

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Availability of Data and Material

The data used in this study have been obtained from the Central Ground Water Board, India and are available in the manuscript.

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Acknowledgements

The authors acknowledge the support of the Central Ground Water Board, India and thank the CGWB and India-WRIS for providing the data for this study. The authors also thank the Delhi Technological University, New Delhi for providing the facilities for this study.

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Contributions

Conceptualization and methodology: RS, SKS; Analysis and investigation: RS; Supervision: SKS; Writing – original draft preparation: RS; Writing – review and editing: RS, SKS.

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Correspondence to S. K. Singh.

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The authors have no relevant financial or non-financial interests to disclose.

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Highlights

• A number of different data-driven models exist for forecasting groundwater levels.

• In the present study, Multi-Layer Perceptron was the most accurate model for groundwater level forecasting.

• Accuracy measures - coefficient of determination, Root Mean Squared Error and Mean Absolute Error were compared to determine the most precise model.

• Multi-Layer Perceptron forecasts for 2025 showed a decline of 2-21 mbgl in the study wells.

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Sarma, R., Singh, S.K. A Comparative Study of Data-driven Models for Groundwater Level Forecasting. Water Resour Manage 36, 2741–2756 (2022). https://doi.org/10.1007/s11269-022-03173-6

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  • DOI: https://doi.org/10.1007/s11269-022-03173-6

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