Expertise: Water Resources Specialist
Expertise Group: Engineering
Consultant Source: International
TOR Keywords: water resources, engineer
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
- Act as the TL for the WBS;
- 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; - Update available water resources, encompassing surface water and groundwater; and taking into
consideration the impacts of climate change and variability on the water balance; - Update water demands across sectors such as agriculture, urban areas, industry, and ecosystem needs;
- Evaluate water use efficiencies, and identify opportunities for conservation and improved management;
- Providing recommendations for sustainable water management practices in light of climate change; and
- 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.
Minimum General Experience: 15 Years
Minimum Specific Experience (relevant to assignment): 7 Years
