Sewage water flowing in a drain that is passing through the middle of the Triangular Park at Sathagalli Extension, 5th Main, is choked with dry leaves and other materials hindering its smooth flow. This has resulted in the sewage water getting stagnant at various places and thereby emanating foul smell. The stagnant water has also become a breeding place for mosquitoes and posing health hazards.  Authorities concerned are urged to get the drain cleaned at the earliest.