natural phenomenon, dry river

Over the rice fields I passed, when I turned to the right, visible flowing river with clear water and filled by mountain rocks that naturally as a barrier Dragon Village. Seen the river has been given borders stone and cement foundations are plastered and there is a water gate .. This village is in a fertile valley, with borders, to the west is limited by the sacred forest where there is the ancestral tomb of Kampung Naga community. To the south is bounded by the rice fields of the population, and to the north and east is bounded by the water-tipped Ciwulan river from Mount Cikuray.thanks @goodkarma