Overview
What is a Canal Survey?
A canal survey involves mapping the route, gradient, and cross-section of proposed or existing irrigation canals, drainage channels, or waterways. It provides the essential topographic and level data required to design gravity-fed water flow systems.
Why is it Required?
Water flows by gravity, so even slight errors in elevation (gradients) can render a canal ineffective. Precise surveying ensures the canal is designed with the correct slope to maintain optimal flow velocity without causing erosion or siltation.
Key Benefits
Precision Levelling — Essential for gravity-flow water systems
Cross-Section Data — Enables accurate calculation of discharge capacity
Rehabilitation Surveys — Identifying siltation levels in existing canals
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