NIA Central Office – The National Irrigation Administration (NIA) immediately conducted a repair of the damaged connecting pins of the Macañao sluice gates caused by heavy Monsoon rains on November 27-28, 2020 at Namnama, Cabatuan, Isabela.
Macañao Checkgate is a water reuse irrigation structure irrigating around 4,882 hectares of agricultural land within the municipalities of Cabatuan, Luna, Reina Mercedes, Naguilian, and part of Cauayan City in the Province of Isabela. The irrigation structure has eight rectangular sluice gates which can be opened or adjusted to meet the irrigation requirement of its covered area. However, due to inclement weather conditions, the Macañao, Gaddanan, and Florida Creeks, together with five other drainages from San Mateo and Alicia, Isabela, had overflowed which contributed to the increase in the water volume at Macañao Checkgate. It prompted NIA Magat River Integrated Irrigation System (NIA-MARIIS) Division IV, which has jurisdiction over the Macañao Checkgate, to reopen the sluice gates with the assistance of the gatekeeper, barangay officials, and barangay tanods of Namnama.
However, though the plan is to open all eight sluice gates for the speedy flow of water, only five gates were opened. The pressure of water in the canal had somewhat damaged the connecting pins of the gates, resulting to difficulty in opening the three remaining gates. The opened gates were not enough to speed-up the drainage of rainwater which contributed to the flooding in Namnama.
Based on the landslide and susceptibility map of Cabatuan Local Govenment Unit (Cabatuan LGU), Namnama is highly susceptible to flooding. NIA Top Management Officials, headed by Administrator Ricardo R. Visaya, assured that the Agency already conducted repair works to ensure that the sluice gates can be opened without delay in case of need to open them arises in order to prevent flooding on its adjacent areas, considering that Gaddahan Creek, which is the water supplier of Macañao Checkgate, is already heavily silted.
As of December 01, 2020, repair works were already completed by NIA and the sluice gates are now completely operational.
**For questions and/or clarifications, you may contact:
EDEN VICTORIA C. SELVA
Acting Department Manager
NIA Public Affairs and Information Staff
Landline: (02) 8921-3741