No. 391 issued by President Ferdinand Marcos. This declaration effectively excluded the southern section of the watershed from the control of the National Power Corporation and placed it instead under the joint administration and control of the Director of Forestry of the Department of Agriculture and Natural Resources and the General Manager of the Metropolitan Waterworks and Sewerage System. Geography The Angat Watershed Forest Reserve is located approximately northeast of Metro Manila largely in the mountainous eastern region of Bulacan. It contains the headwaters of the Angat River, a tributary of the Rio Grande de Pampanga, and stretches along upper Angat River from San Jose del Monte and Rodriguez to Doña Remedios Trinidad, and extending to General Tinio and General Nakar. The forest reserve is divided into two sub-catchment areas: the Forest Range and the Metro Water District. The Angat Watershed and Forest Range, also known as the Angat Watershed Management Pilot Project Reserve, covers in San Jose del Monte, Norzagaray and Rodriguez, and supports the Ipo Dam, which has a capacity of and a spilling level of . It is under the administration of the Department of Environment and Natural Resources and Metropolitan Waterworks and Sewerage System. The Metro Water District, also known as the Angat–Maasim River Watershed, covers the remaining and contains the Angat Hydroelectric Dam, which has a reservoir capacity of and a normal water level of . The Angat Hydropower Corporation, a joint venture of San Miguel Corporation and K-water, has managed the reserve since taking over ownership of the hydroelectric power plant from the National Power Corporation in 2014. The watershed is characterized by hilly to mountainous topography and a moderate to intensive forest cover. It is considered as one of the few remaining well-forested and well-managed watersheds in the country. The highest peak in Bulacan, Mount Oriod, rises to a height of at the border of the two sub-catchment areas in Norzagaray. It also contains Mount Maranat, a popular destination for hikers and is also visited for its waterfalls. These mountains in the southern Sierra Madre range feed the Angat River's water source from its three major tributaries: the Talaguio, Catmon and Matulid Rivers. It stretches downstream from the watershed into several municipalities and irrigates more than of prime agricultural lands before draining into the Pampanga River in Calumpit and eventually exiting into Manila Bay. Additional water supply is fed into the Angat reservoir