This article describes tunnels, which include sub terain passages drilled to tap clean, pure and natural water. These are commonly found in coastal Karnataka, as well as Malnad regions. Tunnels exist wherever tanks are found and these form a part of the local culture and tradition.
Tunnels or sub-terrain passages are common features in coastal Karnataka, as well as in Malnad. These are crosscut openings drilled into hillsides to tap clean, pure and natural water. The sub-terrain water level at the base of the hill is generally at a higher level than the groundwater levels of the plains. Hence, when crosscut openings are drilled, the end portion of the aperture reaches the sub-terrain water level of the hill. Water flows out easily through the tunnels owing to the gravity.Read More
Madaka is one of the most common traditional systems of water conservation followed in several places in coastal Karnataka. It has been in use for hundreds of years at several places in the districts of Dakshina 
This article describes the efforts made by people in the districts of Kasargod and Dakshin Kannada to revive the traditional Kattas for water conservation. Kattas are temporary structures in the form of barricades erected across rivers, streams and rivulets to hold back the flowing water. The entire community involves itself in erecting these kattas. Built out of locally available stone and mud, the kattas are in existence only for three or four months in the summer. 
