A Hydraulic Well and French Drain System in Early Maritime Engineering Oak Island, Nova Scotia

Oak Island, Nova Scotia, has long been interpreted through speculative frameworks that emphasize treasure recovery rather than engineering function. This report presents a hydraulic analysis of Oak Island, demonstrating that its subsurface features constitute an integrated hydraulic well and French drain system. Such systems have a long global history in industrial, maritime, and environmental engineering, particularly in European contexts. By examining the construction methods, spatial relationships, and hydraulic behavior of Oak Island’s features, this report argues that the island represents a purpose-built water-management system designed to regulate flow, pressure, and sediment rather than to obstruct excavation. When evaluated within established hydraulic engineering traditions, Oak Island emerges as an early North Atlantic example of functional subsurface infrastructure.