Objective and Purpose of the Assignment
 | A water balance study (WBS) was conducted in 2018 and later updated in 2020 during the preparation and implementation of the MWSIP. This WBS was conducted using daily timestep data and a Riverware modeling tool to confirm the water availability for implementing both phases of the NCPC Project. However, the expected implementation plan for the NCPC Project has changed due to the prevailing situation in the country. Therefore, there is a need to update the WBS, taking into consideration already developed water resources (Kaluganga and Moragahakanda reservoirs, Kaluganga–Moragahakanda Transfer Canal) and changes in proposed benefit areas (CAD) since its preparation, including (i) climate change impacts; (ii) the revised implementation schedule (stages) and associated changed options of the NCPC and NWPC irrigation systems as they have been linked in terms of water planning; (iii) impact of new extensions or outlets, including an outlet to the Elahera Minneriya Yoda Ela (EMYE) if the government chooses to incorporate this option; and (iv) potential changes of cropping patterns in the project area and beyond The main objective of the assignment is to update the existing water balance analysis for the areas under the Mahaweli Macro System and existing and proposed benefit schemes from diversions of the Mahaweli water. |
Scope of Work
| The scope of work will mainly focus on: (i) updating available water resources; and encompassing surface water and groundwater, taking into consideration the impacts of climate variability on the water balance; (ii) updating water demands across sectors such as agriculture, urban and industrial water uses, and hydropower and ecosystem needs; (iii) evaluating water use efficiencies and identifying opportunities for conservation and improved irrigation management; and (iv) providing recommendations, leading to an operation model for sustainable water management practices in light of climate change. |
Detailed Tasks and/or Expected Output
| 1. Act as the TL for the WBS; 2. Coordinate and manage the consultants working on the WBS update to ensure full compliance with the TOR and delivery of quality outputs in a timely manner; 3. Update available water resources, encompassing surface water and groundwater; and taking into consideration the impacts of climate change and variability on the water balance; 4. Update water demands across sectors such as agriculture, urban areas, industry, and ecosystem needs; 5. Evaluate water use efficiencies, and identify opportunities for conservation and improved management; 6. Providing recommendations for sustainable water management practices in light of climate change; and 7. Timely submit required reports by following schedule: a. Inception report (within 1 month after commencement); b. Draft report on updated WBS within 3 months after commencement; and c. Final report on updated WBS within 5 months after commencement. |
Minimum Qualification Requirements
| – Post-graduate degree in water resources, environment, hydrology, or a related field; – At least 10 years of work experience in water resources management and hydraulic modelling; and demonstrated competencies and leading role in water resource balance study at river basin level; and – Experience in Sri Lanka and South Asian countries would be an advantage. |
