The Rockbrook Creek Tributary was a 1100’ long concrete lined channel surrounded by residential development and the City owned Prairie Lane Park in the vicinity of 115th & Frederick Streets. The concrete liner was failing in multiple locations, with undesirable vegetation growing through the cracks. The drivers of the project were to improve channel stability and water quality without impacting the flood elevations. The project focused on removing the concrete liner and re-establishing a stable channel through the use of rock drop structures and vegetated channel banks. In addition to removing the concrete liner, three bioretention areas were built in Prairie Lane Park to provide storage and treatment through the use of plants adapted to conditions in the Omaha area.
Rockbrook Tributary before construction
Grade control construction
View of new culvert facing south