Baluran National Park - Hydrology

Hydrology

Baluran National Park has a radial water system. The Kacip river flows from the caldera to Labuhan Merak beach. The Klokoran and Bajulmati rivers form the western and southern borders of the park. Many stream beds form in the short wet season, but the water is absorbed in great quantity by the very porous volcanic ash, and after it reaches the hardened underground lava it comes to the surface in form of springs in coastal areas (Popongan, Kelor, Bama, Mesigit, Bilik, Gatel, Semiang and Kepuh), in downhill areas (Talpat spring), in Air Tawar Bay and on the Sedano peninsula. In wet seasons the black soils are least permeable, and water then flows on the surface, forming many pools, particularly in the southern area from Talpat to Bama. In the long dry periods, those pools are often dry.