Geography of the Philippines Bay. Laguna de Bay, east of Manila Bay, is the largest freshwater lake in the Philippines. Several rivers have been harnessed for hydroelectric power. To protect the country's biological resources, the government has taken a first step of preparing a Biodiversity Action Plan to address conservation of threatened species. The islands are volcanic in origin, being part of the Pacific Ring of Fire, and are mostly mountainous. The highest point in the country is the peak of Mount Apo in Mindanao, which is above sea level. The second highest point can be found on Luzon at Mount Pulag, a peak
Laguna de Santa Rosa inches (117 cm), is a gray and light brownish gray moderately alkaline clay. Wright loams are also present within the Laguna. The slope of the drainage basin is typically zero to two percent. The Laguna de Santa Rosa is a principal tributary of Mark West Creek. Largest among the many tributaries of the Laguna are Santa Rosa Creek, Copeland Creek, Hinebaugh Creek, Five Creek, Washoe Creek and Blucher Creek. The Laguna consists of a winding ribbon of flow in the dry summer season and a massive floodplain that resembles a series of lakes in the winter storm season. There are