Objectives
- To promote absorption and storage of water in the soil for improved moisture regime.
- To prevent flash floods or dry mantle floods.
- For erosion control on slopes where plant cover has deteriorated and revegetation is required
- FFS is based on two premises:
Criteria for typological selection
- On gentle slopes (up to 30%), use outward- sloped or level trenches.
- On steep slopes (30 to 70%), use reverse-sloped trenches.
- For dissected slopes, use shorter or individual ditches.
- For uniform slopes, use long trenches
Location and Condition
- For uniform slopes, use long trenches
- For soils with relatively high permeability.
- For denuded watershed slopes where revegetation is planned
- For development of spring sanctuary on sloping lands.