Information server for southern Guam natural resources
Toguan watershed is located between villages of Umatac and Merizo. It has a drainage area of 1.41 sq. miles. The main rivers in the watershed include Toguan Creek, Pigua River and Bile River with approximate lengths of 1.38 miles, 1.09 miles and 0.73 mile respectively. Toguan Creek drains to Toguan Bay in the Philippine Sea, and Bile River and Piguan River discharge to Bile Bay in the Philippine Sea. All these rivers flow from east to west. The highest elevation is about 1043 feet (318 meters) in the eastern boundary of the watershed. The vegetated area is about 94.6%, and urban area is about 4%. The soil types mainly include Ylig clay, Togcha-Akina silty clays, Akina-Badland complex, Sasalaguan clay, Inarajan clay, rock and urban land complex.
Use menu on the right to view relevant maps.