Enhancing Water Security in Sri Lanka: Geo-Info Tech Lanka’s Role in Mahaweli Water Security Investment Program (MWSIP)

Sri Lanka’s water security and agricultural development are set to receive a significant boost with the second stage of the Mahaweli Water Security Investment Program (MWSIP). Geo-Info Tech Lanka (Pvt.) Ltd. is proud to be a key partner in this initiative, conducting topographic site surveys for critical pumping facilities within the Pipe Distribution Network (PDN) systems of seven proposed subproject areas.

About the Mahaweli Water Security Investment Program (MWSIP)

The MWSIP is a strategic initiative designed to optimize the transfer of water from Sri Lanka’s wet zone to the northern central dry zone. This project aims to support commercial agricultural development by improving irrigation infrastructure. As part of this effort, several PDN systems have been proposed, many of which will require efficient water pumping facilities to distribute water effectively across different terrains.

Geo-Info Tech Lanka’s Role in the Project

Geo-Info Tech Lanka (Pvt.) Ltd. has been entrusted with conducting topographic surveys for key structures, including pumping stations for the PDN systems. The project is being executed in collaboration with the Asian Development Bank (ADB) through the International Irrigation Specialist, ADB-TA Consultant. The contract was formalized on March 26, 2025, between Mr. Alan K. Clark, the Irrigation Specialist representing the employer, and Mr. C.D. Wijesingha, CEO and Director of Geo-Info Tech Lanka.

Scope of Work: Topographic Surveys

Our team is undertaking precise topographic surveys to support the engineering and design of the proposed pumping stations. The scope of work includes:

• Plan Surveys: Comprehensive mapping of designated sites for pumping facilities.
• Cross-Section Surveys: Detailed cross-sectional profiling of embankments, canals, and other structural features.
• Digital & Hard Copy Deliverables: High-quality topographic maps and cross-section drawings provided in both digital format and hard copies.

Technical Approach and Equipment

To ensure the highest accuracy and reliability of survey data, our team is utilizing advanced surveying instruments, including:

• GPS systems for precise geolocation.
• Total Station for accurate elevation and distance measurements.
• Conventional levelling equipment to ensure consistent data collection.

Survey Benchmarks and Methodology

The surveys adhere to an on-site (local) Temporary Benchmark (TBM) of +100.000 m for each site. Data collection involves:

• Spot levels captured at a 5m x 5m grid.
• Coverage of a minimum 60m x 60m area around the proposed structures.
• Cross-sections at 1.5m intervals for embankments, canals, and other features.

Key Deliverables

Our deliverables include:

• Site Plans: Illustrating topographic spot heights, contours, and locations of key infrastructure components.
• Cross-Section Drawings: Showcasing natural ground levels, embankment profiles, and estimated water levels.
• Special Field Notes: Detailed records maintained by the survey team to support design engineers.

Project Timeline and Team Expertise

The contract duration is set for two months, with an optional one-month extension if required. A dedicated team, led by experienced surveyors with over five years of expertise, is ensuring the completion of surveys with precision and efficiency.

Schemes and PDN Systems Covered

Our surveys will be conducted in the following areas:

1. Ellapothana Anicut LB & RB Canal – Horowpothana/Kahatagasdigiliya
2. Mahakanadarawa LB High-Level Canal – Rambewa/MNP
3. Palugaswewa & Labunoruwa Cascades – Palugaswewa
4. Yakalla & Manankattiya Tank U/S – Galenbindunuwewa
5. Maminiya Oya RB Side – Tirappane/Mihintale
6. Eru Wewa RB Canal
7. Kongetiya & Madeththawewa Tanks – Elahera

A Step Towards Sustainable Water Management

Geo-Info Tech Lanka (Pvt.) Ltd. is committed to delivering high-quality topographic survey services that contribute to the success of the Mahaweli Water Security Investment Program. By providing accurate and reliable data, we are playing a vital role in the development of efficient water distribution networks that will enhance agricultural productivity and water security in Sri Lanka’s dry zone.