Atenaga, M. and Azi, S. 2026. A Low-Cost Lidar Based IoT System for Real-Time Remote Groundwater Level Monitoring: Design, Validation and Field Deployment. Nigerian Journal of Physics. 35, 4 (Aug. 2026), 318–322. DOI:https://doi.org/10.62292/njp.v35i4.2026.625.