Reservoir vs Embung: What Is the Difference?
Reservoirs and embung (small retention reservoirs) are sometimes still confusing because they look the same. Here is reservoir vs embung explained:

A reservoir is a very large artificial lake or pond for storing water. Reservoirs hold water that people can use for drinking water, irrigation, power generation and aquaculture. A reservoir is built by constructing a dam or by excavating the ground and lining it with Geomembrane. Geomembrane installation should be carried out by experienced engineers, because it requires precision and an understanding of the methods used for reservoirs.

An embung is a pond built to collect water during the rainy season. The water stored in an embung is generally used as a supply when the dry season arrives. An embung can also be used to improve water quality in rivers or lakes. Embung construction today uses geomembrane liners, which help hold water longer, so even in the dry season the embung still has water.