This water control assembly is a result of many years of experience in varying designs of water control devices.  Flashboard risers are fabricated in widths from 12" to 30 feet wide, depending on flow of water through the lake or reservoir.  It resembles a piece of pipe cut in half with boards stacked in channels to height of water required.

These risers can be fabricated with three types of channel:
single, double and triple.  Double and triple channel are
advantageous when utilizing screens in ponds for fish and shrimp farmers.