Dredging 59,000 Tons of Sediment from Anyangcheon Reservoir Bottom to Secure River Flow Cross-Section and Prevent Flood Damage

Installing Reinforced Concrete to Replace Bottom Sediment on 2,767㎡ of Anyangcheon Riprap Blocks, Establishing a Permanent Maintenance Plan



A panoramic view of the Anyangcheon revetment blocks after maintenance completion

A panoramic view of the Anyangcheon revetment blocks after maintenance completion

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Yangcheon-gu (Mayor Lee Gijae) announced that it has proactively completed dredging work on the Anyangcheon reservoir and the 4th phase of riprap block maintenance to prevent flood damage caused by heavy summer rains and to provide residents with a safe and pleasant waterfront environment.


First, the district conducted preliminary dredging for four months starting in March in the section between Mokdonggyo and Huimanggyo bridges on Anyangcheon, where a large amount of sediment had accumulated due to record-breaking heavy rains last summer. Sediment accumulated on the reservoir bottom not only obstructs water flow and causes foul odors but also raises the river water level, increasing the risk of flood damage.


Accordingly, the district deployed equipment and personnel, including two excavators, one bulldozer, and 24-ton dump trucks, to remove a total of 59,000 tons of sediment, thereby securing the flow cross-section necessary for controlling the river water level.


Additionally, to prevent erosion collapse of the riverbank and damage to river facilities caused by riprap block damage and detachment, the district completed the "4th Phase Maintenance of Anyangcheon Riprap Blocks." Previously, since 2019, the district had carried out maintenance work on the Anyangcheon reservoir riprap in three phases.


Through this 4th additional maintenance, the district refurbished 2,767㎡ of riprap blocks along a 270-meter section from beneath Omokgyo Bridge upstream and a 400-meter section downstream of Mokdonggyo Bridge. In particular, the sediment bottom in front of the Mokdong discharge channel, where erosion was a concern, was finished with reinforced concrete slabs, establishing a permanent riprap maintenance measure that eliminates worries about flood damage.


Anyangcheon in Yangcheon-gu has recently become a citizen-friendly waterfront space combining flood control functions and a resting place, featuring the newly reopened Family Garden, waterfront walking trails, themed flower gardens, and a barefoot clay path.



Lee Gijae, Mayor of Yangcheon-gu, stated, "Ahead of the full-scale rainy season, we proactively carried out dredging and riprap maintenance projects on Anyangcheon to preserve a pleasant waterfront environment and ensure the safety of residents. Since heavy rains are expected again this summer, we will perfect flood prevention measures to create a safe Yangcheon-gu."


This content was produced with the assistance of AI translation services.

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