Wawa Dam - Credit: Wikimedia Commons
Wawa Dam (also known as Montalban Dam)Philippine Commission (1912). "Annual Reports of the U.S. War Department 1912, Vol. IV". Government Printing Office, Washington. is a gravity dam constructed over the Marikina River in the municipality of Rodriguez in Rizal province, Philippines."Final List of Watersheds Supporting 140 River Irrigation Systems of the NIA" , pg. 5. Green Army Network. Retrieved on 2012-08-15. The slightly arched dam is situated in the high Montalban Gorge or Wawa Gorge,"Wawa Gorge". Google Maps. Retrieved on 2012-08-15. a water gap in the Sierra Madre Mountains, east of Manila. Read more on Wikipedia
Source: en.wikipedia.org