Rainfed rice - IRRI books - International Rice Research Institute

Level bench terrace
These terraces are generally used in
medium-rainfall areas with highly
permeable soil. They absorb most of
the surface runoff and the remaining
portion goes safely into the drain
through a grassed outlet.
Outward-sloping bench terrace
These bench terraces are adopted in
low-rainfall areas with moderate
permeable soil. In these terraces, a
shoulder bund is constructed to
provide stability to the outer edge of
the terrace and retain surface runoff.
Inward-sloping bench terrace
These terraces are preferred in areas of heavy rainfall and less permeable
soils, where a large portion of rainwater is drained as surface runoff
through a grassed waterway.
Farm ponds
Farm ponds are constructed for storing surface runoff generated from the
catchment area. They play a key role in flood control when constructed in
large numbers in the catchment area. Pond water is used for irrigation,
cattle feeding and fish production. There are two types.
Indigenous Rainwater Management
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