Selection of Consultant for Conducting the Integrated Geohazard Assessment (IGA) for Mangdechhu and Drangmechhu River Basins

Tender summary

REQUEST FOR EXPRESSIONS OF INTEREST (CONSULTING SERVICES – FIRMS SELECTION) Country: Kingdom of Bhutan Name of Project: Accelerating Transport and Trade Connectivity in Eastern South Asia (Access) – Bhutan Project Loan No/Credit No/ Grant No: IDA 77560 (Credit)/IDAE4310 (grant) Assignment Title: Selection of Consultant for Conducting the Integrated Geohazard Assessment (IGA) for Mangdechhu and Drangmechhu River Basins Reference No: DGPC/ACCESS/IGA/2025/12 Royal Government of Bhutan has received financial assistance in the form of Credit and Grant from the World Bank towards the cost of the proposed Accelerating Transport and Trade Connectivity in Eastern South Asia (ACCESS)-Bhutan Project , to be implemented partly by the Department of Surface Transport (DoST), Ministry of Infrastructure and Transport (MoIT), and intends to apply a part of the proceeds of this financing for the services of “ Selection of Consultant for Conducting the Integrated Geohazard Assessment (IGA) for Mangdechhu and Drangmechhu River Basins”. 2. Scope of Services The scope of work comprises an Integrated Geohazard Assessment (IGA) of the Mangdechhu River Basin (Mangdechhu and Chamkharchhu rivers) and the Drangmechhu River Basin (Kurichhu and Gongrichhu rivers) in central and eastern Bhutan, to support the planning and preparation of hydropower projects in these basins, including the Dorjilung Hydroelectric Power Plant. The assignment will evaluate geological, hydro-meteorological, and cryosphere-related hazards under current and future climate scenarios to identify risk-informed measures that strengthen dam safety and the long-term resilience of hydropower infrastructure. Key activities include an inception workshop and comprehensive desk study of existing geohazard, seismic, hydrological, and climate-risk information; a gap analysis to identify outstanding data and field investigation needs; and a comprehensive IGA covering event mapping, process identification, neo-tectonic and regional geological analysis, and a glacial hazard assessment — including an inventory of glaciers and glacial lakes, hazard ranking, detailed feasibility and numerical breach/flood modelling for at least two high-hazard glacial lakes, and recommendations for future monitoring. The 18-month assignment will be delivered through an Interim IGA Report for the Kurichhu/Dorjilung sub-basin, a Draft IGA Report covering both river basins, and a Final IGA Report, supported by at least three visits to Bhutan, including an Inception Workshop and an IGA Workshop. 3. Detail Terms of Reference (TOR) will be available in https://www.drukgreen.bt/tender/ from June 29 , 2026. 4. The DoST, MoIT represented by Druk Green Power Corporation Ltd (DGPC) now invites eligible consulting firms (“Consultants”) to indicate their interest in providing the Services. Interested Consultants should provide information demonstrating that they have the required qualifications and relevant experience to perform the Services. The shortlisting criteria are: General Experience of the Consultant in providing similar services (core business and years in business); Experience in similar assignments of compatible size, complexity and technical specialty in the required area; Experience in working with development partner financed projects; and Technical and managerial capability of the firm, including overall staffing and logistics. Consultants are requested to submit, but not limited to, the following supporting documents in support of the above-mentioned criteria: The Firm's Incorporation/Trade/registration documents from the country of the firm Firm’s brochures; Description of similar consultancy contracts, including the scope, contract amount, name of Client, period of the contract (date of contract signing to date of completion), location/ country of the services, etc. Key Experts will not be evaluated at the shortlisting stage. 5. The attention of interested Consultants is drawn to Section III, paragraphs, 3.13,

What to check before bidding

• Located in Bhutan.
• Source notice P181278 on worldbank.
• Notice published 25 Jun 2026; Tenqual indexed it 1 Oct 2025.
• Deadline listed as 27 Sept 2026.
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