The Krishna delta system distributes water through canals and drains across coastal farming areas. A main river barrage, canal head, distributary channel and field outlet are not the same asset. The design ayacut is the planned command; actual irrigated area is measured separately in a period. A season can face shortage even where a map shows the full canal network.

The delta spans present administrative districts after reorganisation. Do not attach an old combined Krishna district figure to current Krishna alone. Use an irrigation-department table with its year and boundary scope.

Worked example: Krishna delta canals distribute water after the main diversion point. A canal may serve areas beyond the district containing its headwork, so do not equate barrage location with every benefited field. In a crop-season question, distinguish demand in kharif or rabi from a guaranteed release. Use a dated irrigation bulletin or area-served record for actual delivery, and use the map for the stable network shape.

Active recall: Locate the named river or project on the relevant map, name its function, and state which facts need a dated source.