Oct 16, 2016 - Water in the San Roque Dam, the biggest embankment dam in the Philippines, was nearing its spilling level early Sunday morning, as Typhoon Karen was cutting through the Luzon landmass, state media said. Current latest trending Philippine headlines on science, technology breakthroughs, hardware. Aug 9, 2012 - Updated 2:55 PM, August 09, 2012. LINGAYEN, Pangasinan - At least 15 barangays (villages) in Mangatarem town are now under water while 67 others were affected by flash floods as a result partly from the moderate release of water from San Roque Dam in San Manuel town. The Municipal Disaster. San Manuel, Pangasinan The San Roque Dam has a height of 200 m above the existing river valley floor. It is a central clay-core rockfill dam with a compacted fill volume totaling nearly 40 million cubic meters. At its nominal crest of El. 295.0, the Dam length is 1,130 m. Two meters of additional fill (camber) have been placed at the dam crest to allow for any expected minor settlement of the structure. The Dam consists of combined earth/gravel fill and rockfill shell zones, filter, drain and transition zones. The impermeable core is a clay gravel blend. Three grouting/drainage galleries provided for inspection and maintenance purposes are located in the dam foundation. The majority of the 1,200 meters of gallery length are 3 m wide by 4.5 m high with shotcrete lining. The section located at the lowest level of the foundation is reinforced with a formed concrete lining to accommodate potentially higher ground water pressures. Access to the galleries is provided by for adits, two on each side of the downstream abutments. • commissioned in 2003 • 200-meter high & 1.2-km long embankment • largest hydro installation in SE Asia • 3rd largest in entire Asia • 12th largest dam in the world Hydrology Drainage Area 1,250 km 2 Average Flow 83.6 cms Design Flood - PMF 13,000 cms Dam Type Central clay core rockfill dam Maximum Height 290 m Crest Level El. 295 (plus 2 m chamber) Fill Volume (including cofferdams) 40 MCM (approximate) Dam Length 1,130 Slope 2h:1v (upstream & downstream) Crest Width 12 m. Head Office Agham Road corner Quezon Avenue Diliman, Quezon City Tel: (02) 921-3541 TeleFax: (02) 921-2468 email: »»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»» Binga Dam Base Office Sitio Binga, Brgy.
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