Patent ID: 8602686

Claim:
A sluice gate comprising: a gate leaf including an upstream face for an upstream side of an open channel, including a downstream face opposite the upstream face and for a downstream side of the open channel, and being movable to allow channel fluid flow from the upstream side to the downstream side; an upstream chamber disposed in the gate leaf and coupled to receive an upstream chamber fluid flow from the upstream side of the open channel via an upstream chamber inlet, the upstream chamber inlet disposed on the upstream face at a first predetermined distance above a lower edge of the gate leaf, the upstream chamber inlet including an upstream flow filter to insulate the upstream chamber from upstream effects of the channel fluid flow, the upstream chamber adapted to house an upstream sensor for measuring upstream fluid-level information; and a downstream chamber disposed in the gate leaf and coupled to receive a downstream chamber fluid flow from the downstream side of the open channel via a downstream chamber inlet, the downstream chamber inlet disposed on the downstream face of the gate leaf at a second predetermined distance above the lower edge of the gate leaf, the downstream chamber inlet including a downstream flow filter to insulate the downstream chamber from downstream effects of the channel fluid flow, the downstream chamber adapted to house a downstream sensor for measuring downstream fluid-level information.