The whole island covers some 3 km2 and is the only reserve owned by OTOP. The number of aquatic warblers on the island depends on the water level and the available vegetation. There were between 55 singing males in the late 1990s.
The island, measuring three square kilometers, is the only reserve under the management of OTOP. The number of aquatic warblers residing on the island depends on both water levels and available vegetation.  In the late 1990s, there were roughly 55 singing males.