Meandering flow can create greater flow uniformity and avoid short-circuiting flow, thus improving hydraulic efficiency.

Installing both emergent obstructions and submerged obstructions on the same side of the inlet and outlet is recommended in shallow-water wetlands.

In deep-water constructed wetlands, installing emergent obstructions markedly improves flow uniformity and hydraulic efficiency, whereas submerged obstructions have only a slight effect.

The meandering channel formed by the emergent obstructions not only delays the peak arrival time and reduces the short-circuiting areas but also increases the aspect ratio and creates a longer flow path.

The findings of this study encourage wetland scientists and wetland engineers to initiate plans for the restoration/creation of deep-water wetlands and combination wetlands with both shallow-water and deep-water areas.