IWM

Academic Chronology

Sadman Hasan Rafi completed his Bachelor of Science (BS) in Geology from the University of Dhaka in 2023 and his Master of Science (MS) in Geology, with specialization in Environmental Geology and Geohazards, from the same institution in 2025.

Professional Track Record

Sadman Hasan Rafi has been serving as a Junior Hydrogeologist at the Institute of Water Modelling (IWM) under the Division of Irrigation, Groundwater & Wetland Management (IGW) since February 2026. Building on a background in environmental geology, geohazards, and geoinformatics, he contributes to hydrogeological surveys and water resources assessments that support sustainable groundwater management in Bangladesh, including aquifer safe-yield assessments, hydrogeological investigations for development planning, and geological characterization for regional strategic plans.

Before joining IWM, he worked as a Research Assistant at the Geoinformatics Research Lab, University of Dhaka (January 2024 – November 2025), under the supervision of Dr. Md. Bodruddoza Mia, investigating hydrological and ecological changes through remote sensing, with particular emphasis on riverine water quality parameters and drought assessment. In this role, he developed GIS and Google Earth Engine workflows for multitemporal analysis and conducted field surveys and in situ sampling to validate satellite observations. He applied statistical and geospatial models to extract key environmental indicators. His technical proficiency spans geoscience software (Rockworks), programming (Python, ArcPy for ArcGIS, JavaScript in Google Earth Engine), GIS and remote sensing software (ArcGIS, ArcGIS Pro, QGIS, Erdas Imagine, Google Earth Pro), and field instrumentation (Aqua TROLL 600 Multiparameter Sonde and water chemistry instruments).

Training / Membership / Workshop / Seminar / Achievement

Membership / Affiliation:

• Program Chairperson – University of Dhaka AAPG Student Chapter (June 2020 – September 2022)
• General Member – SPE Dhaka University Chapter (April 2018 – February 2021)
• Vice-President – SH-Delta, a family of Shahidullah Hall’s Geologists (April 2022 – May 2023)
• Editor – theEarth Issue No. 02 (2020), Annual Magazine of the University of Dhaka AAPG Student Chapter

Major Project Assignment

• Assessment of water resources availability and lowest safe yield of aquifer in 10 districts of the North-Central Hydrological Regions of Bangladesh for effective implementation of Bangladesh Water Act, 2013 (Hydrological investigation & modelling of the state of surface and groundwater resources Component).
• Hydrogeological Survey & Studies for Preparation of Comprehensive Development Plan for Twelve Upazilas.
• Geological and Hydrogeological Study for “Preparation of Strategic Plan for Barishal Metropolitan Area.”
• Geological and Hydrogeological Study for Strategic Plan for Munshiganj District.

Major Field Experience

• Spatiotemporal Analysis of Water Quality – Jamuna River, Padma River and Meghna River – Conducted MS thesis research and research assistant work integrating multitemporal Earth observation data, remote sensing techniques, and in-situ measurements to assess suspended sediment, turbidity, and chlorophyll-a concentration and their ecological implications (Department of Geology, University of Dhaka).
• Drought Assessment – Rajshahi Division – Contributed to spatiotemporal drought assessment using the Google Earth Engine cloud platform as part of research assistantship work at the Geoinformatics Research Lab, University of Dhaka, emphasizing the principal analytical contribution.
• Integrated Geological Fieldwork – Cox’s Bazar Town – Conducted fieldwork with emphasis on geomorphology, geology, geo-resources, and geohazards (February 2023).