In tidal or wind conditions, how much gap should be between the curtain and the bottom of the water body?

The recommended gap of 1 foot between the curtain and the bottom of the water body in tidal or wind conditions is critical for ensuring proper functionality of the curtain. This gap is designed to allow for sufficient water flow and sediment transport beneath the curtain, preventing excessive buildup of sediments that could compromise the effectiveness of the barrier.

Additionally, maintaining a gap helps to accommodate fluctuations in water levels due to tides or wind-driven waves. If the curtain were positioned too close to the bottom, it could create a situation where sediments accumulate against the curtain, reducing its ability to contain or control the movement of pollutants or suspended solids in the water.

A 1-foot gap strikes a balance that allows for effective sediment management while still providing the necessary containment benefits of the curtain system in dynamic aquatic environments.