Grass waterways

• Grass waterways are earth waterways planted with grasses (such as . dubo, and centipede grass) to control soil erosion
• Waterways are important for removing surplus water from terraced fields and for erosion control. They are constructed along the slope of the area (<20%).
• 2-m to 48m wide
• The uses of grasses in this measure act as lining material to control the problem of erosion caused by turbulent runoff flow through the section.
• Allows for increasing soil cohesion and roughness. (reduce K),
• also prevents the formation of rills and gullies.

Advantages:

a) It carries a large flow and makes it suitable for large watersheds.

b) Farm machinery can easily cross them.

c) After the establishment of grasses, their maintenance becomes very easy.

Disadvantages:

a) It restricts the installation of the drainage outlet.

b) At a few locations the establishment of vegetation is very difficult