Inside the Indiana University Natatorium with Director Ed Merkling
Since 1982, the Indiana University (IU) Natatorium has stood as a pillar of aquatic excellence, hosting legendary swimming and diving moments while serving as a hub for community engagement and economic growth. With more than 30 years of experience at the “Nat,” Director Edward Merkling shares how its forward-thinking design, elite competitions, and commitment to public programming have cemented its reputation as one of the nation’s premier aquatic venues.
SPG: The IU Natatorium is widely regarded as one of the top aquatic venues in the country. What makes it stand out?
Merkling: It’s incredible how forward-thinking the original design team was over 40 years ago. The pool’s depth, gutter design, and filtration system still enhance competition conditions today.
Our diving well has unique features that separate us from other facilities. The floor’s distinct tile colors help divers maintain spatial awareness during complex dives, while our sparging system creates bubbles to cushion landings—an essential tool for athletes learning new techniques.
Until 2019, we were the only indoor facility in the U.S. with two 50-meter pools. The second pool, initially designed with a movable floor for instructional programs, remains a valuable warm-up and cool-down space for major events.
Beyond infrastructure, the Natatorium carries an undeniable historical aura. Olympians, world records, and championship moments have shaped the Nat’s legacy, making it a dream destination for athletes. Plus, with a staff boasting over 125 years of combined experience, we take pride in delivering world-class events with Hoosier hospitality.
SPG: How does the Natatorium contribute to Indianapolis’ economy and local community?
Merkling: In our 2024 championship season alone, we hosted 11 events in 12 weeks, generating an estimated $14.6 million in economic impact. On average, we host 35–40 events annually, drawing athletes, families, and spectators to the city.
Beyond major competitions, we offer lap swimming, instructional programs, and community outreach initiatives. We partner with Indianapolis Public Schools to provide swim lessons for underserved youth and engage local kids as event volunteers. Additionally, we’re active in the Indy Aquatic Alliance, a network of leaders working to expand aquatic opportunities in the area.
SPG: What are some of the most memorable events you’ve witnessed?
Merkling: The 2009 USA Swimming Summer Nationals stands out, where Michael Phelps broke the 100m butterfly world record in front of a sold-out crowd. In 2018, Katie Ledecky shattered the 1500m freestyle world record in her first professional race, beating her previous time by five seconds.
More recently, the 2024 Men’s NCAA Division I Championships saw 10 records fall across individual and relay events. It’s widely regarded as the fastest short course meet in the world.
On a local level, I love the energy of the IHSAA State Championships. The atmosphere created by high school athletes and their supporters creates some of the most electric crowds we see each year. I also enjoy watching the reaction of the swimmers and divers that enter the Nat for the first time. It’s a reminder for me just how special this place is.
SPG: What’s on the horizon for the Natatorium?
Merkling: Even after the conclusion of our renovation in 2016, we continually seek ways to enhance the facility while preserving its legacy. Maintaining a venue of this size and usage is no small task, but IU leadership recognizes its importance for the campus, city, and state.
We’re also expanding into new aquatic disciplines. While swimming and diving remain our focus, we’ve been working with USA Water Polo to host national-level events. Additionally, we’re thrilled to welcome the country’s top swimmers for the 2025 USA Swimming Nationals in June 2025.
SPG: How has technology evolved in the Natatorium’s operations?
Merkling: Technology has transformed our daily operations. When I started, some of the systems we rely on today didn’t even exist. Timing and scoring systems, LED videoboards, video review tools, live webcasting, and advanced filtration and HVAC systems are now critical to running efficient and high-quality events.
SPG: What steps has the Natatorium taken toward sustainability?
Merkling: We’ve implemented a range of initiatives, from switching to LED lighting to donating leftover hospitality food to local shelters. One of our biggest upgrades was replacing our sand filtration system. Previously, we wasted thousands of gallons of water through backwashing. Now, we use regenerative diatomaceous earth filters, significantly reducing water loss.
SPG: What drew you to a career in aquatics, and what continues to inspire you?
Merkling: My connection to water started early. My grandfather owned Merkling’s Beach, a resort on Pretty Lake in northern Indiana. My parents, both lifeguards, made sure my siblings and I learned to swim. I competed through high school, then pursued aquatics as a minor at Ball State. That led to a job at the Natatorium in 1993, and I’ve been here ever since, rising from facility manager to director in 2017.
What continues to inspire me is creating memorable, seamless experiences for every person who walks through our doors. I take pride in the fact that the hard work and behind-the-scenes effort goes unnoticed, allowing guests to simply enjoy the magic of the Nat.
SPG: What’s the biggest lesson you’ve learned in your role?
Merkling: Relationships and balance are key. Our success depends on strong collaborations, such as with IU leadership, city officials, national organizations, and our own staff. Internally, I also emphasize work-life balance, ensuring my team knows the importance of taking time for themselves while still delivering world-class events.
