River is a naturally functioning stream channel rain water, ground water or melted snow water to the lake and the sea. In Indonesia, a lot of rivers that spread in every region. The second interesting fact from a river in Indonesia which are as follows:
- Most rivers on the island of Java was the river periodically. Periodically River means the river water flow depending on the season where it will recede in the dry season and return full in the rainy season. In general, rivers are generally short in Java
- River on the island of Sumatra, Kalimantan, and Papua, most of the river remains. River means the river is still always keep the volume of water throughout the year. River on the island of Sumatra, Kalimantan, and Papua are usually long and deep.
