A water gauge is a tool that measures the depth or level of water. Several synonyms for water gauge include water level gauge, liquid level indicator, dipstick, water depth meter, and water level sensor. A water level gauge is commonly used in various industries such as agriculture, construction, and wastewater treatment facilities. A dipstick is used to measure the oil level in an engine, while a water depth meter is used to measure the depth of water in oceans, rivers, and lakes. A liquid level indicator is used to measure the level of any liquid in a container or tank. Similarly, a water level sensor is a device that detects the level of water.