2026-10-07T04:32:39Z https://api.figshare.com/v2/oai

oai:figshare.com:article/29293877 2026-09-26T07:32:04Z category_25885 item_type_3 month_year_09_2026

Quality controlled, reliable groundwater level data with corresponding specific yield over India K. Satish Kumar (21525779) Maya Suryawanshi (21451409) Amin Shakya (21525788) Chethan V A (21525791) Balaram Shaw (21525793) Vandana S (21525803) Vishwakarma Bramha Dutt (17298181) Groundwater hydrology groundwater levels Central Ground Water Board Specific Yield Hydrogeology map <h4 dir="ltr">This repository includes the<b> raw groundwater level </b>dataset obtained from <b>Central Ground Water Board (CGWB)</b>, comprising measurements from 32,299 wells across India (1_India_GWLs_2000_2024_wells_within_India.csv).</h4><p dir="ltr">After applying a series of quality control and preprocessing steps including removal of missing/negative values, outlier filtering using the three-sigma method, and consistency checks (e.g., minimum two readings per year and avoidance of repeated values), a refined subset of <b>2,759 reliable wells</b> was identified for the period 2000-2022 for robust long-term spatiotemporal analysis.</p><p dir="ltr">In addition, the dataset includes specific yield estimates for each reliable well, derived using a Vectorization-based method and a hydrogeological map of India. The provided scripts enable users to reproduce the data processing steps and perform further analysis, including comparison with satellite-based (e.g., GRACE) or model-based groundwater storage estimates.</p><p dir="ltr"><br>In Version 4, along with the existing datasets and files, we have added additional <b>groundwater-level observations for four seasons</b> (January, Pre-monsoon, August, and Post-monsoon) for <b>unconfined aquifers</b> across India. These observations cover the period from <b>1994 to 2025, where available</b>, and were obtained from the <b>Central Ground Water Board (CGWB)</b> through its Ground Water Level Monitoring portal:<br></p><p dir="ltr"><a href="https://cgwb.gov.in/en/ground-water-level-monitoring" target="_blank">https://cgwb.gov.in/en/ground-water-level-monitoring</a></p><p dir="ltr">The newly added observations complement the existing groundwater-level dataset and provide an extended temporal record for seasonal and long-term groundwater-level analysis.</p> 2025-06-11T15:56:01Z Dataset Dataset 10.6084/m9.figshare.29293877.v4 https://figshare.com/articles/dataset/Quality_controlled_reliable_groundwater_level_data_with_corresponding_specific_yield_over_India/29293877 CC BY 4.0