Traveling weir

摘要

A weir suitable for use in an irrigation water supply ditch. The weir controls water flow to create a sufficient pool of water for pick-up by an irrigation machine. The weir has a rigid bulkhead which is generally shaped to match the contour of the ditch. The bulkhead is supported such that it is not in contact with the ditch. A seal member attached to the bulkhead fills the gap between the bulkhead and the ditch surface, to prevent water flow underneath the weir. This arrangement of a rigid piece coupled with a flexible seal allows the weir to move in either direction along the ditch without becoming snagged on obstructions in the ditch.