As the land on the bank of the river is washed away, sediment from the bank is deposited in the river, causing shallow depths that can impede recreational and commercial boating. In addition, shallower depths can be detrimental to the native aquatic species. Erosion control is often implemented to protect and stabilize streambanks from damage caused by water, vehicles, or livestock.
STEP uses both structural and biological methods of control.
Structural measures may include rock riprap, interlocking concrete blocks, gabions, geosynthetics, or formed concrete. Bioengineering uses living plants and organic materials as construction elements for erosion control, habitat enhancement, bank stabilization, and wetland restoration. This approach is especially preferred along streams and rivers located in parks and populated areas. By establishing a viable naturalized or native plant community, the goal of bank stabilization is achieved along with the added benefits of habitat enhancement and aesthetic benefits. Geotubes were installed to contain sediment at Drakes Creek .