A water level gauge, such as the OceanWatcher, is a device used to measure and monitor the water level in a harbor or waterway. It provides important data on water level, temperature and currents, enabling better management and decision-making in ports, locks and other water bodies.

The water level gauge is designed for easy installation on the edge of a quay, in a well or on another suitable surface. Its primary purpose is to provide accurate and real-time water level information to various stakeholders.