Addis, Z., Zewdu , S., Hailu , T., Fenta , A. and Mekonen , A. 2026. Development of an open source Web GIS tool for Borehole Data Management and spatial Analysis: A case Study of Addis Ababa and surrounding Towns. Ethiopian Journal of Water Science and Technology. 8, (Jan. 2026), 119-139. DOI:https://doi.org/10.59122/EJWST722.