Water Resources Projects

Streambank Stabilization: Evaluated streambanks for erosion that compromised the capacity of the downstream water supply (Lake Perry Reservoir) and eroded farm fields.  Over 40 sites have been assessed, surveyed, designed, permitted and successfully constructed.  Over 15 miles of streambank and over 150 acres of riparian habitat have been restored.

Digital Flood Insurance Rate Map and Flood Insurance Study: Gredell Engineering staff successfully completed a Digital Flood Insurance Rate Map (DFIRM) and Flood Insurance Study (FIS) report for Butler County, Kansas, the largest county in Kansas.  Hydrologic analyses were completed for approximately 1,065 square miles of flooding sources with greater than one square mile of drainage area.  Peak flood discharges were calculated for the one-percent annual chance storm events for all streams with drainage area greater than one square mile.  Hydraulic analyses were performed with modeling that includes the one-percent annual chance storm events, based on peak discharges computed in the hydrologic analyses.  Cross section and field data were used to perform the hydraulic analyses.

Lake Shoreline Stabilization: Gredell Engineering staff successfully prepared engineering design, plans, and specifications for the stabilization of an approximately 900-foot section of shoreline on the edge of Thomas Hill Reservoir that was being undercut by wave action.  The design also included a jetty to protect a marina cove.  Prepared base mapping for the project, identified the geometry of the slope failure zone and subsurface conditions critical to design and construction, and prepared construction documents for bidding purposes in order to complete the stabilization work with limited construction oversight.

Road Failure from Streambank Erosion: Gredell Engineering staff successfully prepared engineering design, plans, and specifications for the streambank stabilization of the Lincoln Street slope failure in Jefferson City, Missouri. Secured a U.S. Army Corps of Engineers (USACE) Nationwide 404 Permit (NWP) and prepared construction documents for bidding purposes in order to complete the stabilization work with limited construction oversight.  Performed a site reconnaissance, located utilities, arranged for the preparation of a project base map, performed a stream assessment, and conducted a subsurface investigation consisting of three geotechnical borings at the site of the roadway embankment failure.  Services also included evaluating streambank stabilization alternatives; evaluating the geometry and soil parameters of the slope failure surface; assessing the location of groundwater and evaluating its potential impact on geotechnical related design and construction; and evaluating the suitability of on-site materials for use as controlled fill.

References Available Upon Request

News

  • 2021 Open House

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  • Connie Walden Passes P.E.!!

    GREDELL Engineering Resources, Inc. is proud to announce that Dr. Connie Walden, PhD, recently was Read More

  • Ken Ewers Elected as MWCC President

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  • Gredell Engineering Continues Internship Program During COVID-19

    Chandler Olmsted recently joined the staff of Gredell Engineering as an engineering intern. Chandler Read More

  • Congratulations Rickie Roberts!

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  • Mikel Carlson 25 Years as Geologist

    Mikel Carlson, R.G., of GREDELL Engineering Resources, Inc. is recognized by the Division of Read More

  • 2020 Review

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  • Gary Pendergrass Presented at MWCC

    GREDELL Engineering Resources, Inc. staff member Gary Pendergrass, P.E., R.G., recently presented at Read More

  • Mikel Carlson to serve as ACE Awards Committee Chairman

    Mikel C. Carlson, R.G. of GREDELL Engineering Resources, Inc., Jefferson City, MO, was selected by Read More

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  • Elke Boyd to Present on Water Upgrades at the 2020 MWWC Joint Annual Meeting

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  • 2020 MWEA/AWWA Joint Annual Meeting Cancelled

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  • Winderl joins GREDELL Engineering

    Nathan Winderl, E.I., recently joined the staff of GREDELL Engineering Resources, Inc. (Gredell Read More

  • Connie Walden Co-Presents on Water Upgrades at 2020 MWWC Virtual Training Series

    Connie Walden, Ph.D., E.I., GREDELL Engineering Resources, Inc., co-presented with Elke B. Boyd, Read More

  • Elke Boyd Presented on Wastewater Irrigation at MRWA Northeast Training Day

    Elke B. Boyd, P.E., BCEE, Senior Civil Engineer with GREDELL Engineering Resources, Inc., presented Read More

  • Staff Attend MWCC Conference

    GREDELL Engineering Resources, Inc. staff recently attended the 2019 Missouri Waste Control Read More

  • Welcome Debbie Hartman

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  • Association of Conservation Engineers Virtual Conference

    GREDELL Engineering Resources is sponsoring the 2020 Association of Conservation Engineers Virtual Read More