In response to the threat posed by the El Niño phenomenon and the potential overflows of the Zarumilla River, the Autoridad para la Reconstrucción con Cambios, in coordination with the executing contractor, continued the construction of riparian defense works along a 11.75 km stretch on the left bank of the river, between the districts of Matapalos and Papayal, in the province of Zarumilla, Tumbes.
The project location was characterized by a severe shortage of rock material, which made a riprap-based solution unfeasible due to the high costs and extended timelines associated with the extraction, processing, and transportation of rock from remote quarries.
In response to these technical and economic challenges, Grupo TDM proposed a more efficient riparian defense system based on the use of geosynthetics, which enabled the lining of 9,987 meters of dikes with geocells combined with concrete, and the protection of an additional 2,010 meters using anti-scour geobags.
This solution not only met the stringent engineering criteria developed over more than six months, but also ensured efficient execution under high quality standards, benefiting more than 2,600 residents, 620 hectares of agricultural land, and significantly strengthening the safety of the entire area against extreme events.