NIA denies damaged dam caused floods in Bukidnon-A A +A
Friday, January 6, 2012
VALENCIA CITY, Bukidnon – The National Irrigation Administration (NIA) belied reports that the flash flood that hit 12 villages here in December was caused by a ruptured dam in Barangay Lumbayao here.
In a press statement, Engr. Felix M. Razo, NIA Regional Manager, clarified that the Lumbayao Dam did not collapse, contrary to rumors that spread through text messages, which caused panic to downstream residents.
Razo said it is impossible for the dam to collapse because it has no “impounding” capacity, unlike the reservoir-type dam.
“It is different from the Magat Dam in Isabela province, which impounds water up to more than 800 meters in height from the river bed, with a gatekeeper that controls release of water to main irrigation canals,” Razo said.
Engineer Jimmy Apostol, manager of the Bukidnon Irrigation Management Office, also said the Lumbayao dam could not easily be damaged because it is a gravity run-of-the-river type with a height of only 2.80 meters from the riverbed.
“It will automatically overflow once it reaches its elevation,” Apostol said.
A report from NIA showed that six main irrigation structures and facilities estimated at over P52 million were damaged due to heavy rains that resulted to the overflowing of Pulangui River, Bukidnon’s biggest river.
The damage includes the grouted riprap at the bridge’s abutment, two spur dikes along Pulangui River, the 60-meter irrigation canal that serves 950 hectares of rice fields in Nabag-o and San Isidro barangays, the embankment of the reuse dam in Barangay Batangan, and the huge siphon that draws water off from the river for distribution to vast rice fields in several barangays here.
The local government unit of Valencia City and NIA are now joining hands to construct a diversion canal and procurement of additional water pumps to cater to the needs of thousands of farmers. (PR)
Published in the Sun.Star Cagayan de Oro newspaper on January 07, 2012.