Koppu, also known as the Koppu River, is a river located in the Philippines. It flows through the province of Kalinga and is known for its scenic beauty and importance to local agriculture. The river provides water for irrigation, supporting the livelihoods of farmers in the region. The Koppu River is also a popular spot for recreational activities such as fishing and swimming. Its clear waters and surrounding landscapes attract both locals and tourists, making it a vital part of the community's culture and economy. The river plays a significant role in sustaining the ecosystem and biodiversity of the area.