Diver-guided hydraulic suction dredging for intakes, forebays, pump wells, basins and berths, sediment and debris removal that restores capacity without taking the facility offline.
Every year of settlement reduces intake flow, pump efficiency and storage volume, gradually, and out of sight. Diver-guided dredging removes that sediment precisely, protecting the intakes, screens and structures it has accumulated around.
Method selection depends on material, volume, access, discharge distance, water depth, environmental constraints, dewatering requirements and operational conditions. Depending on the project, methods may include:
A structured path from the initial review to a deliverable the owner or engineer can act on.
We assess the sediment condition and estimate the removal volume so the owner can plan disposal and schedule.
Dredging method, discharge handling and access are planned for the specific basin, forebay or berth.
A diver guides the suction head to remove sediment precisely, protecting intakes, screens and structures.
Restored depth and capacity are verified and the removed volume is documented for the owner's record.
Approach channels and screens.
Settling and approach basins.
Wet wells and sumps.
Storage and settling volume.
Wastewater treatment lagoons.
Slips and vessel berths.
Retention and conveyance.
Industrial process basins.
Material, volume, access, discharge distance, depth, environmental constraints and operational conditions all shape the dredging approach. Zion Marine does not publish generic production rates, each project is planned to its actual conditions.
Infrastructure work is performed with surface-supplied diving: umbilical gas, voice communication, topside supervision and a standby diver. Why that matters →
Project examples tagged to this capability in the Project Library.
WaterOwner: DeKalb County · DeKalb County, Georgia
Removed all sand from the intake area, inside each of the six channels, ahead of schedule. Part of Zion Marine's ongoing diving services contract with DeKalb County.
Licensed general and marine contractor. ADCI-certified divers and supervisors. TRIR 0.0 as of 2026, EMR 0.83 as of 2026. Full credentials on the Qualifications page.
How diver-guided dredging protects intakes, screens and structures during sediment removal.
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Coordination, access and operational considerations before inspecting an intake.
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What to gather before scoping a dive inspection at a treatment facility, dam or bridge.
Read article →Before dredging, a documented condition assessment establishes the sediment profile, volume and any debris or structure concerns, so the removal scope matches the actual basin.
Tell us about the basin, forebay or berth and the condition. We'll help determine the right dredging scope.