Project Goals

  • Develop a new Flood Hazard Area Delineation (FHAD) that also includes Erosion Zone and Hazard Zone Analysis (EZAs and HZAs).


  • Perform a comprehensive stream stability assessment and develop stabilization alternatives.


  • Incorporate all new and proposed structures into the updated FHAD.


  • Prepare a comprehensive drainage report that addresses stream stability, ecological health, erosion and flooding hazards, and provide a series of alternatives and recommended plans for addressing all concerns found.



Project Overview

Urban Drainage and Flood Control District has engaged Enginuity to provide a Major Drainageway Planning Study and Flood Hazard Area Delineation (FHAD) for Plum Creek and portions of East and West Plum Creek within the UDFCD and Douglas County Boundaries.  The purpose of this study to analyze the existing  and future floodplain delineation, assess stream erosion and deposition, and develop a series of alternatives and plans that will maintain the ecological health of the reach and also address flooding and erosion concerns.  This project will,

  • Assess drainage conditions within the drainage basin;
  • Develop alternate drainageway planning concepts to mitigate flood damages;
  • Provide stabilized alternatives for East, West, and Plum Creek and their banks;
  • Address environmental and public safety concerns;
  • Prepare a preliminary design of an alternative selected by the sponsors and UDFCD;
  • Define the water surface profile and flood boundaries for the 2, 5, 10, 25, 50, and 100-year return periods.

Project Sponsors

  • Urban Drainage and Flood Control District
  • Douglas County

Project Stakeholders

The following stakeholders are invited to participate and provide input during the planning process:

  • Federal Emergency Management Agency (FEMA)
  • Local Business Owners and Developers
  • Individual Property Owners

Project Engineer

  • Enginuity Engineering Solutions