Land Surveyor

Roles and Responsibilities of a Land Surveyor in Flood Mitigation Projects

• Preliminary Survey and Data CollectionConduct topographic surveys to gather elevation data of rivers, drainage channels, and low-lying areas.Measure existing infrastructure (e.g., bridges, levees, drainage systems) for spatial positioning and dimensions.Identify flood-prone areas and provide accurate geodetic and water level reference data to the design team.
• Establishment of Control Points and BenchmarksSet up survey control points to ensure all design and construction works are based on a unified coordinate and elevation system.Utilize GPS / GNSS and total stations to achieve high-precision measurements over large project areas.
• Design and Construction SupportProvide survey drawings and digital terrain models (DTM) for engineers to plan flood control structures such as levees, drainage channels, and retention ponds.Perform setting-out works during construction to ensure structures are positioned and built at the correct location and elevation.
• Monitoring During ConstructionContinuously monitor construction progress and verify that channels, levees, and embankments meet the design specifications.Carry out cross-section surveys to assess dredging and widening works along rivers and drainage systems.
• As-Built and Handover SurveyConduct as-built surveys to confirm that completed flood mitigation structures match the design.Produce as-built drawings and reports for project handover and future maintenance reference.
• Post-Construction Monitoring and MaintenanceSupport long-term monitoring activities such as water level changes, riverbed sedimentation, and levee deformation.Apply drone surveying and GIS systems for dynamic monitoring and continuous data updates.

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