The “flood” depicted in Article 64 of the Act refers to inundation and pooling of water; “inundation” is defined as an overflowing of water in the waterway that surpasses the possible accommodation and discharge limits of waterway and suffices to spill over and cause disaster; “pooling of water” is defined as a body of standing water on ground surface from rain or melted snow and enough to cause damages of flood submergence.
The “distributary” depicted in Article 64 of the Act refers to another waterway constructed to divert the overflow in certain section of the main channel and merge the diverted flow back into the main channel at a proper downstream location or discharge the diverted flow into a lake or ocean, or store it temporarily in a low-lying area.
The “newly constructed waterways” depicted in Article 64 of the Act refers to new waterways constructed to divert or discharge water for the purpose of flood control; a waterway that is also used for navigation is regarded as a canal.

Water that flows into the waterway system after being used by the original water right holder may be reutilized by the same water right holder or others. However the water user shall register his water right according to the Act.

The “land likely to be flooded” depicted in Article 69-1 of the Act refers to water storage area reached by the maximum flood level designed for the reservoir and by its backwater, the land on which important facilities of the reservoir are built, and the protection belt of reservoir.

The reservoir proprietor or its manager will draw up the rules and procedures for storage and utilization of water, flood control operation, emergency measures and reservoir operational procedures and submit them to the authority-in-charge for approval and public announcement.

For reservoirs equipped with floodgate, the maximum outflow at the water level rising section during the flood period shall not be greater than the maximum inflow into the reservoir; the increment of discharge flow of reservoir shall not surpass the maximum increment of inflow. However when there is concern over reservoir safety, the flood control operation and emergency measures provided in the foregoing article may prevail.
The “outflow” in the preceding paragraph is the discharge flow after the regulation of after bay or equivalent facilities at downstream of reservoir, if any.