The Brantas River is one of the major rivers in Indonesia, flowing through the eastern part of the island of Java. It stretches approximately 320 kilometers and is vital for irrigation, agriculture, and water supply in the region. The river originates from the Semeru Mountain, the highest peak in Java, and eventually empties into the Java Sea. The Brantas River basin supports various ecosystems and is home to diverse wildlife. It also plays a significant role in local culture and economy, with many communities relying on its waters for fishing and transportation. The river is essential for sustaining the livelihoods of the people living along its banks.