Section 13.01.11.014 - DEFINITIONS - LOCATIONS01.Confluence. Location where two (2) rivers or streams join.02.Diversion. Man-made structure designed to divert water.03.Diversion Pond. Man-made basin holding diverted water, including basins connected by an open ditch or pipe.04.Drainage. All water flowing into a common river or stream system, either above or below ground, due to area geography.05.Fish Trap. Any man-made structure designed to capture fish.06.Fish Weir. Any man-made structure placed in a water body to delay or divert migrating fish.07.Mouth. Place where a river or stream enters a larger body of water.08.Reservoir. Portion of a dammed waterbody in which there is no observable direction of flow. Unless noted otherwise, a stream flowing through the drawdown portion of a reservoir is not considered part of the reservoir.09.Section. An area of a river, stream, or reservoir between specific boundary locations.10.Tributary. A stream flowing into a larger water.11.Upstream. Moving from a lower elevation towards a higher elevation point in the same stream.Idaho Admin. Code r. 13.01.11.014