Case Study - Spring Lake Park, Omaha Nebraska, a Design Engineer’s 10-year Journey with One of the Showcase CSO Projects for the City of Omaha

Rocky J. Keehn, PE, D.WRE, CFM, ENV SP, LEED AP

Learn how you can "hide" detention ponding, which can be used to reduced downstream infrastructure costs, using over 20 permanent BMP's in a revitalized neighborhood park and on a adjacent 9 hole golf course. The presentation, with lots of pictures, including lots of construction ones, is a case study from an engineers perspective of a 10-year journey from design to final completion of major green infrastructure project in Omaha, Nebraska which was completed in 2020.

Learning Objectives: 

  • Demonstrate how detention storage systems can be successfully incorporated into and hidden in a natural landscape.
  • Show how green infrastructure conveyance systems can totally replace grey infrastructure pipe systems.
  • Demonstrate the value of hydrologic and hydraulic modeling of infrastructure systems to addresses both short-term and long term changes of the impacts of runoff on BMP's for a wide variety of rainfall events.

Presented by Rocky J. Keehn, PE, D.WRE, CFM, ENV SP, LEED AP – Owner/Senior Water Resources Engineer, Common Sense Water Resources

Mr. Keehn has over 35 years of experience in the field of stormwater planning and design with a focus on common sense designs back up by tje appropriate hydrologic and hydrology modeling. The power of using and abusing models that simulate the hydrologic cycle began with his undergraduate studies at the University of Nebraska where he started writing codes for hydrology computer programs to later as part of his graduate studies at Iowa State University adding special catchbasin routines in the EPA SWMM model. His projects have included detention ponding for rate control; retention ponds for water quality improvements; wetland construction; underground and above ground BMPs including rain gardens, first flush diversion structures, and special outlet structures; and retrofit of existing sites for stormwater improvements. He holds the certification of diplomate water resource engineer (D.WRE) from the American Academy of Water Resource Engineers, and is a registered engineer in the states of South Dakota, Nebraska, Minnesota, and Wisconsin. Mr. Keehn is a registered hydrologist in Wisconsin, a certified floodplain manager (CFM), LEED accredited professional, Envision Sustainability Professional (ENV SP) and Nebraska Department of Transportation (NDOT) erosion and sediment control certified inspector.