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Protecting Our Communities

Dependable design matters — especially when the water starts to rise.

For over 100 years, water resources engineers at Klingner have innovated reliable flood solutions for drainage districts, municipalities, and enterprises in the Illinois, Missouri, and Mississippi River basins.

Nationally-Recognized Expertise

Talk to a water expert

Gavin Risley

Our work protects infrastructure, businesses, livelihoods, and — most importantly — lives.

“We bring insight and support to your project that’s informed by knowledge of what works.”

Gavin Risley, PE, CFM
Water Resources Department Manager
South Quincy Map

Unmatched Water Resources Engineering Experience

The key to a successful project? Applying real-world experience to engineering designs.

Klingner’s water resources engineers develop detailed hydraulic and hydrologic models to pinpoint the most effective design options with the fewest impacts to reduce permitting efforts. For multiple river locations, Klingner has even updated flood profiles to accurately reflect modern conditions — and better safeguard our clients.

Responsible design keeps Klingner’s work on track and ahead of regulatory requirements from the U.S. Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA), Environmental Protection Agency (EPA), and Department of Natural Resources (DNR). It also allows us to anticipate a river’s flooding and navigational challenges for stronger projects.

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Comprehensive Water Resources Services for Your Projects

We live and breathe all things river engineering.

A boat docked at the Hannibal riverfront

Infrastructure Design & Rehabilitation

  • Docks
  • Intermodal Ports
  • Marinas
  • Dams & Spillways
  • Dredging Design
Bendway weir

Flood Control

  • Flood Risk Management System Design & Rehabilitation
  • Levee Design & Restoration
  • Floodwall Design & Restoration
  • Pump Station Design, Rehabilitation, & Conversion
  • Stream Bank Erosion Stabilization
  • Relief Well Designs
Flood map


  • Interior Drainage Studies & Mapping
  • Benefit Assessments
  • FEMA National Flood Insurance Program
  • Levee Certifications / Accreditations
  • Wetland Delineation & Mitigations
  • Hydrographic Surveys
  • Underwater Culvert & Pipe Inspections
Drainage ditch in a field


  • Section 404 & 408 Permits
  • Dredge Permits
  • Expert Witness

Working With Underwater Equipment

Dive deeper into your project. With a certified team of Remotely Operated Vehicle (ROV) Submarine specialists on staff, we deliver efficient and cost-effective culvert and pipe inspections that meet USACE requirements.

Klingner also performs detailed surveys of rivers and lake beds with our hydrographic survey equipment, allowing us to develop practical, site-specific designs.

Gulfport Pump Station

Easing the Permitting Process

When it comes time for permitting, your project is in good hands.

Each year, we complete and review dozens of Section 404 and 408 permits. Klingner is considered a Section 408 permitting expert, having been involved in over 50 applications in the Rock Island, St. Louis, and Kansas City USACE Districts.

Every requirement — from wetland delineations to habitat assessments — is completed and accounted for by our in-house experts. This thorough knowledge of river-related regulations mixed with our close and constant governmental working relationships is one of our secrets to success.

Founded on Flood Risk Management

Our heritage is in the watershed.

Klingner was founded in 1905 to provide water resources engineering services along the Mississippi River, working on nearly every federal levee between St. Louis and Rock Island. In fact, we continue to serve many of those same levee and drainage districts who placed their trust in us all those years ago.

Learn More About Us

Sny Dredge 1915


Will Klingner

Talk to a Water Resources Engineer About Your Project

Our technical savvy. Your need for better river solutions. Together, we’ll identify a design that works for you.

Talk to us about your project