Cottonwood Creek Improvements and PDM Grant
The Cottonwood Creek Improvements - Pre-Disaster Mitigation (PDM) project is located along Cottonwood Creek between Interstate 25 bridge and the Vincent Drive bridge in Colorado Springs. Kiowa Engineering prepared the design for restoration of Cottonwood Creek from a severely degraded urban stream to a more highly functioning waterway with wetland and riparian habitat. The channel bottom had eroded more than 10-ft in several areas.
The proposed improvements included constructing a composite channel section with low flow section and overbanks, raising the channel flowline to a more historical and stable location by constructing three grouted sloping boulder drops to provide grade control and to lessen the longitudinal channel slope to a more stable slope. The improvements protected the historic Vincent Drive bridge abutments. The project involved extension of the existing recreational trail along with a new pedestrian bridge.
Kiowa completed the hydraulic modeling for the project including CLOMR and LOMR preparation and submittal to FEMA for approval. Kiowa’s scope also involved assisting the City with the PDM grant application, permitting and 404 permit application to the U.S. Army Corps of Engineers and construction services including observation of the drainageway improvements.
Project Information
Location
Colorado Springs, Colorado
Client
City of Colorado Springs
Services Provided
Civil Design of Public Infrastructure
Stormwater Management (drainageway)
Floodplain Management (CLOMR/LOMR)
Erosion Control
Construction Monitoring
