Irrigation tank

In countries like Sri Lanka and India they are part of historic methods of harvesting and preserving rainwater, critical in regions without perennial water resources.

A tank is often an earthen bund (embankment or levee) constructed across a long slope to collect and store surface water from the above catchment and by taking advantage of local topography.

[4] Similar small-scale reservoir based irrigation methods using earthen bunds are used in countries like Ghana.

[3] Irrigation tanks provide features that allow for other useful products such as fishes, grass, and silt.

[13] Ralegaon Siddhi is an example of a village that revitalised its ancient tank system.

The village tank could not hold water as the earthen embankment dam wall leaked.

This led to the building of some significant ornamental and architectural features, often associated with dwellings and in urban areas.