The on-going project is one of those being undertaken by the Nigeria Erosion and Watershed Management Project (NEWMAP) in seven states in Nigeria
In response to infrastructure like roads, houses and farmland in imminent danger from gully erosion, the Nigeria Erosion and Watershed Management Project (NEWMAP) is using Maccaferri’s Gabions and Reno Mattresses to address soil erosion and reduce the water velocity.
Ekehuan is a community located in Ovia North-East Local Government Area of Edo state. The poor drainage systems in the area are insufficient and inefficient to cope with run-off at peak rainfall. The excess water flow has become trapped in a small concentrated stream and begun to erode channels in the ground surface creating gullies.
With the residents of Ekehuan community in danger of losing their houses, farmland and a major road to gully erosion, the Nigeria Erosion and Watershed Management Project (NEWMAP), financed by the World Bank and the Federal Ministry of Environment, employed a local consultant to address the severe erosion as well as land degradation. The local consultant proposed the construction of a concrete channel to take the flow of water away from different catchments around Ekehuan, channeling them to a stilling basin in order to reduce the velocity or turbulence of the flow.
The consultant also proposed the construction of check dams at intervals using Maccaferri’s gabions to further reduce the velocity and assist in gradual deposition to reclaim the gully. Lastly, to stabilize the gully bed, Maccaferri’s Reno Mattresses and Geotextiles were used to reinforce the exposed soil surface and prevent scouring by the water flow velocity in the gully. They will also aid bio-remediation.
The project, which is still on-going, has started to yield results as the erosion management is improving and the loss of infrastructure has greatly reduced.
For more information on this project, please download our Case History.