Laguna Lake, the fourth-largest lake in Southeast Asia, lies in the provinces of Rizal and Laguna. Increased development within the basin has caused water quality to decline steeply.
The Bengawan Solo basin is the largest on the island of Java. Administratively it is shared by two provinces, Central and East Java, and is jointly managed by Jasa Tirta Public Corporation I (PJT I) and Balai Besar Wilayah Sungai Bengawan Solo (BBWS-BS).
The Brantas basin in East Java supplies water to about 16 million users, but suffers from poor water quality due to rapid population growth and industrialization.
The Yoshino River flows through Shikoku Island in southeastern Japan. The Yoshino River Basin Management Plan of 1966 was one of the first such efforts in Asia and the Pacific region. It was formulated through consultations held with local stakeholders, including riparian residents in Tokushima on the east of Shikoku Island, upstream residents of Kochi on its southern coast, and transboundary water users in Ehime and Kagawa on its northern side.
Plans to build a dam on the Yom River of Thailand have caused disputes between water users and communities living in the basin. In 2008, the Ministry of Natural Resources and Environment of Thailand, with support from the Asian Development Bank, launched a collaborative integrated water resources management initiative that focused on participatory processes for the management of the Yom River Basin.