What is the rule of reasonable sharing of water commonly called?

The rule of reasonable sharing of water is commonly known as the Riparian Doctrine. This doctrine establishes that landowners whose property is adjacent to a water source, such as a river or stream, have the right to make reasonable use of the water. This principle emphasizes balanced access, ensuring that one user's rights do not adversely affect another’s use of the water. It is rooted in the idea that water from a common source should be shared fairly among those who are near it, thereby promoting responsible and equitable use.

On the other hand, the Water Ownership Act pertains to broader laws about ownership and rights concerning water resources, while the Common Law Principle generally refers to unwritten laws based on court precedents. Groundwater Management Law relates specifically to the regulation and management of groundwater resources, which operates under different guidelines than surface water rights.