STORMWATER MANAGEMENT

CFS performs watershed delineation, hydrologic modeling, hydraulic modeling, floodplain mapping, and storm drain modeling. We utilize various methodologies, including HEC-1, HEC-RAS, HMS, TR-20, TR-55 and Rational. CFS analyzes open-channel drainage systems and existing natural streams for FEMA flood studies and regularly prepares and files documents of map revision.

PROJECTS

Channel Realignment | Warsaw, Missouri

CFS analyzed the Town Branch Creek to determine why the existing concrete channel walls had collapsed, causing erosion and undermining of the adjacent properties. CFS worked with the City and the USACE to design an re-alignment of the existing channel to reduce the effects of scouring and turbulence that had been created by the tight radius of the channel and constriction from the existing channel walls.  The improvement included a gentler alignment of the channel with a large-block retaining wall system.  A natural channel floor was kept to allow for pooling and to benefit the natural habitat of the stream. CFS completed design plans on four separate projects totaling $4,200,000 in 6 weeks. 

Turkey Creek Flood Rise Analysis | Shawnee, Kansas

CFS was responsible for establishing the flood elevation on Turkey Creek impacted by the construction of these two commercial developments (Panera Bread Restaurant and First State Bank Development) along Turkey Creek within the overbank flood areas along Turkey Creek within the heavily commercialized business strip on Shawnee Mission Parkway. Coordinated with the City’s floodplain administrator to modify the HEC-RAS hydraulics and prevent the 100-year flood elevation from rising over the designated allowable limit for the area.

Leban Creek Riparian Restoration | Beloit, Kansas

With the stream bed damage caused by the scour hole downstream of the Highway K-14 bridge. KDOT acquired additional right-of-way to the southwest of the bridge and CFS designed stabilization and a riparian shelf to restore vegetation and protect the creek against future erosion and sedimentation.   Instructions included establishment of a base xeriscape native seed mix of 25% switchgrass, 25% western wheat, 25% sideoats grama, and 25% bluestem applied at 25lbs/acre and a biodegradable moisture/erosion net. Prairie Cordgrass, commonly found in marsh environments and forming dense colonies, will be plugged at 3-feet on center stabilizing the soil. In addition to ground cover plantings, native trees commonly found in low areas (cottonwood and willows) will be planted about 10 feet on center as small whips or seedlings.

Field Operations Facility | Lawrence, Kansas

With the stream bed damage caused by the scour hole downstream of the Highway K-14 bridge. KDOT acquired additional right-of-way to the southwest of the bridge and CFS designed stabilization and a riparian shelf to restore vegetation and protect the creek against future erosion and sedimentation.   Instructions included establishment of a base xeriscape native seed mix of 25% switchgrass, 25% western wheat, 25% sideoats grama, and 25% bluestem applied at 25lbs/acre and a biodegradable moisture/erosion net. Prairie Cordgrass, commonly found in marsh environments and forming dense colonies, will be plugged at 3-feet on center stabilizing the soil. In addition to ground cover plantings, native trees commonly found in low areas (cottonwood and willows) will be planted about 10 feet on center as small whips or seedlings.