I General Conditions I Biological Conditions I

Hydrology

Like most of volcanic areas. TN-BTS area has a radical water order, so at dry season, surface water is hardly available or even completely extinct. It is due to all water that inundated soil surface during wet season disappeared quickly by penetrating lower layer of soil.
The existing ground water is rain water that penetrate through spreading mountain stones, moving into stones layer below clay-stone layer which is watertight. Even though at a rainy season, a river within a volcanic stones area is full. But once the dry seasons comes, everything will be drying.

Water sources from TN-BTS are river and canals.
They are documented as more than 50(fifty) rivers and 4(four) lakes within TN-BTS area
The lakes are Ranu Darungan, Ranu Pane, Ranu Regulo, and Ranu kumbolo.

It is shown that TN-BTS has a very important role in water order in regulation for its surrounding areas. The existence oh the springs of TN-BTS can accommodate a hygiene water requirement for communities in villages and can satisfy water requirement for farming and generating energy/ electricity power.