The Fish-friendly Flood-gate attachment converts new or existing tide/flood gates to meet fish passage requirements.
For new builds, we can provide a stainless steel flood gate & fish-friendly attachment combo.
We have two different types of floodgate:
– Cantilever style
– Off-set style
Both styles delay the closing of the flap on the incoming tide. They also:
- Assist fish passage
- Improve water quality – flushing
- Improve culvert capacity – reduced head-loss
- Manage groundwater levels and control aquatic weeds – flap open or disable delaying mechanism.
The cantilever style has a fine degree of adjustment and they can be temporarily locked open for maximum effect or disabled for the flap to function as normal.
They are great when there is a high flow current to help open the flap to a wider angle.
The off-set style does have a degree of adjustment by selecting which set of holes to use for the top hinge.
They are particularly useful where there are low-flow rates.
