DELTA LANDFILL FLOOD CHANNELIZATION

A major storm in northern Wisconsin eroded topsoil from a dormant landfill in the township of Delta, exposing the potential for contaminants to leach into the watershed and nearby recreational areas. 

With no erosion protection in place, future flood events could create new flow paths, accelerate erosion, and increase environmental risk. The county needed a durable, permanent solution capable of withstanding future flooding while adapting to the site's challenging terrain. 

Maccaferri designed a hard-armored flood channel using a combination of our Terramesh®, Green Terramesh®, and Reno Mattress® solutions. Together, this system provides continuous erosion protection across the channel while addressing the different slopes and hydraulic conditions of the site. 

The Reno Mattress® units armor the channel bed, while Terramesh® stabilizes the channel walls. Green Terramesh® protects the upper sloped area while allowing vegetation to reestablish along the channel's edge. 

The resulting system provides long-term flood resilience and permanent erosion protection while integrating with the surrounding landscape. Its adaptable design offers a durable alternative to more rigid channel treatments, helping protect the landfill from future erosion and reducing the risk of contaminant migration.