Sometimes a rock retaining wall
is neccesary in a waterfall design
The rock wall will prevent the rain
or sprinkler water from washing out any part of the waterfall landscape soil berm.
The water could undermine the soil, causing the plants, biofalls filter or spillway, to
shift out of place. In the back of the waterfall area, the rock is placed on a slight angle
on the berms soil, towards the waterfall area. Different sized stones are applied to
create a strong retaining rock wall. This will keep the soil retained off of a fence or a
tight corner. No cement is used when building these rock retaining walls. Plantings
and mulch along the top of the wall, will help retain the rock wall. The rock retaining
wall, looks more natural than a cement brick wall and blends in with the water feature.