10/20/2023 0 Comments What is dredging a river![]() As for the equipment, DPWH Metro Manila, headed by Director Eric Ayapana, deployed crawler-type backhoes. To increase the water capacity of Marikina River and prevent overflow, DENR went for dredging an estimated 50,000 cubic meters of silt. Here’s how: Does River Dredging Prevent Flooding? Also, with river dredging, sediments with a variety of pollutants are removed and people and animals are less exposed to contaminants.Īside from Maritime and pollution prevention, dredging also helps in flood prevention. Without the practice of dredging, vessels will have a hard time floating. A dipper dredger scoops sediments from the river.įrequently, the purpose of dredging is to ensure that boats and ships can safely pass. So what do dipper dredgers do? They scoop the sediments and debris like a shovel. How Is River Dredging Done?ĭredging means augmenting the depth of the river channel by removing sediments and debris that build up over time.ĭredging normally uses a dipper dredger mounted on a barge. To prevent this from happening again, the Department of Environment and Natural Resources (DENR) started its river dredging operation on Feb 17, 2021.ĭo you think dredging the Marikina River will really stop floods from taking place? Or will it only provide a temporary solution due to uncontrollable circumstances? Let us answer these questions as we understand river dredging closely. Thus, Marikina River’s water level unexpectedly swelled up to 22 meters at 11 AM on November 12. Ulysses, the 21 st tropical cyclone that entered the Philippine Area of Responsibility in 2020, prompted downpours particularly across Metro Manila from the evening of November 11 to the morning of the 12th. ![]() ![]() Ulysses (international name: Vamco) brought back the agonizing memories of Ondoy (international name: Ketsana), which also caused drastic flooding in 2009 in the Philippines. Is River Dredging Enough to Prevent Flood Risk? ![]()
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