Its a temporary structure made by binding mud and stones locally available. Its like a embankment or dam . This is made across a small stream or river to slower down the force of water. It helps to store a large amount of water especially for dry seasons. The collected water seeps by and gets added to the ground water raising the level of water table. They also minimize the flow of excess fresh water to the sea. These are cost effective practices mainly practised in the rural areas and had greatly helped to conseve water.