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Norway and Oakdale Spillway Expansion

Reducing risk to downstream people and property

  • Northwest Indiana

    Northwest Indiana

Consulting services to NIPSCO for two hydroelectric facilities for over 40 years

NIPSCO LLC owns and operates two hydroelectric projects—the Norway and Oakdale Hydroelectric Facilities—on the Tippecanoe River in Indiana. Each project, built in the early 1920s, consists of a powerhouse integrated with earth embankment dams, concrete gravity and buttress structures, and spillways.

After investigations identified insufficient spillway capacities to pass the probable maximum flood (PMF) without overtopping the earth embankments at each facility, we were brought in to deliver risk-informed decision making (RIDM) services. Our team worked with NIPSCO to identify an acceptable inflow design flood (IDF) for each facility and evaluate potential risk mitigation measures including structural and non-structural approaches.

Our multi-year study—one of the Federal Energy Regulatory Commission’s (FERC) pilot RIDM projects—included a baseline risk assessment, potential risk reduction measures, potential failure modes analyses (PFMA), and an estimation of annual failure probabilities, incremental life loss, and physical property damage. We also developed a complex, multi-variable risk analysis model to justify reductions in design flows in accordance with FERC guidelines and the established tolerable risk guidelines. 

At a Glance

Offices
Client
  • NIPSCO LLC
Meet Our Team

Jason Hedien, Vice President, Power & Dams

Each hydropower and dam project brings challenges and opportunities. The rewards come when we overcome the challenges to seize those opportunities.

Steven Bedross, Senior Associate, Environmental Scientist

Strive to meet the needs of our clients without compromising the health of the natural and social environments on which we all depend.
Steven Bedross Senior Associate, Environmental Scientist Read More

Manoshree Sundaram , Vice President, Power & Dams

Relationships form the core of every aspect of my work. My focus is listening to clients and learning how my teams can collaborate to help.
Manoshree Sundaram Vice President, Power & Dams Read More

Jason Hedien

Vice President, Power & Dams

Steven Bedross

Senior Associate, Environmental Scientist

Manoshree Sundaram

Vice President, Power & Dams

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