Stoplogs, Bulkheads and Dewatering for Dam Maintenance
Learn how dam stoplog dewatering works – from setting stoplogs and bulkheads to choosing pumps and handling leaks.
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Lock Dewatering: Why It's Winter Work
An ADCI-certified dive supervisor on why lock dewatering is winter work, how the schedule is set, and what actually happens when a navigation lock goes dry
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Trash Rack Cleaning and Repair at Hydro Plants
How to clean, inspect, and repair trash racks at hydro plants, with methods, tools, and scheduling from a veteran maintenance manager.
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Dam Inspection Underwater: Spillways, Gates and Outlet Works
How to inspect dam spillways, gates, and outlet works underwater—with proven methods and safety.
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Penstock Inspection Without Dewatering
Compare ROVs for penstock inspection without dewatering. Learn specs, costs, and field lessons from an ADCI-certified diver.
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Tainter and Sluice Gate Repair Underwater
How ADCI-certified divers repair leaking tainter and sluice gates: inspections, seal replacement, underwater welding, and tips for plant operators.
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Post-Flood Emergency Bridge Inspection
Learn how state DOT engineers inspect bridges after a flood — from scour probing to sonar to deciding whether to reopen.
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Sonar Scour Monitoring vs Diver Inspection
Compare sonar scour monitoring and divers underwater bridge inspections. A state DOT engineer explains strengths, limits, and when to use both.
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Timber, Concrete and Steel Substructures: What Fails in Each
What fails in bridge substructures? Learn the failure modes of timber, concrete, and steel—and what to inspect for.
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Collector Wells and Raw Water Intakes: The Inspection Nobody Schedules
Learn how to inspect raw water intakes and collector wells, from monitoring differential pressure to scheduling dives and ROV surveys.
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Underwater Bridge Inspection Cost Per Substructure Unit
What you actually pay for underwater bridge inspection per substructure unit, from a DOT engineer who's signed off on 400 dives.
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Bridge Scour: The Number One Cause of Bridge Failure in the US
Bridge scour is the leading cause of bridge failure in the US. Learn what it is, how to inspect for it, and how to protect your bridge.
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