Catanduanes - Geography

Geography

Catanduanes is situated in the easternmost fringe of Luzon: 13.3 to 14.1 degrees north latitudes and between 124.1 to 124.3 degrees east longitudes. The island bounded on the West by the Maqueda Channel, on the South by Lagonoy Gulf, and on the North and East by the Philippine Sea (Map 1). Several islands compose the province, but majority of these are physically small to be of relative significance. Its aggregate land area totals approximately 1,511.5 square kilometers or 151,150 hectares. The coastlines, that stretch to almost 400 km (249 mi) (248.5 mi) are mostly embayed and coiffed.

The topography is rugged and mountainous, becoming more pronounced towards the central portion of the island. The highest mountain peak is in Boctot, located between the municipalities of Virac and San Miguel, Catanduanes with an elevation of 803 meters (2,600 ft) above sea level. It is the premier mountain range with broadly spread old growth forests and watershed which exerts widespread influence over its immediate environs that include the municipalities of Virac, Bato, and San Miguel. Other prominent mountain forms with important significance include the ranges: Obi in Caramoran, Cagmasoso in San Andres, and the Summit and Magsumoso ranges within the Viga and Gigmoto areas.

The lowlands include the Virac Plain, Viga Plain, San Andres Plain and the Bato River Flood Plain. The coastal municipalities with limited lowland agricultural areas are Pandan and Caramoran. The more extensive lowlands are found in the southern parts of the province. The largest coastal plain is the contiguous wetlands of Viga, Panganiban and Bagamanoc over which lays the widest area of rice paddies and nipa mangroves.

The province is mostly rugged and mountainous terrain. Its slope characteristics are 13% gently sloping to undulating, 1% classified rolling to hilly, 2% very hills and mountains, 47% level to very gently sloping, 32% steep hills and mountainous, and 5% undulating to rolling. Ten of the eleven municipalities of the province are situated along the coastal fringes, over which locate its mostly fractured plains. The only landlocked municipality is San Miguel with its poblacion sitting in a location entirely devoid of flat lands. The majority of the built-up areas occupy zones that are classified as flat to rolling.