The Geist Reservoir, home of the Geist Half Marathon, 10K, and 5K, is more than just a stunning view—it’s a powerful symbol of Fishers’ transformation, showcasing the city’s evolution from its historical roots to a vibrant, modern community. One of the best ways to experience this change is by running the annual race this fall. Runners race along the reservoir’s scenic shores, tackling a challenging course while connecting with the area’s rich history.
A Glimpse into the Past
Before Fishers, the area now known as Geist Reservoir was home to Germantown, a small but significant settlement founded in 1834 by German settlers from Oaklandon. Germantown was a modest collection of homes, with a general store, a grist mill, and a shoemaker. This early community holds a place in history similar to Conner Prairie’s 1836 Prairietown, with a story deeply rooted in the past.
Located between Fall Creek and Lawrence Townships, Germantown once sat along the north side of Fall Creek, which now marks the boundary between Hamilton and Marion counties. The creek’s banks were once dotted with tiny hamlets throughout central Indiana’s countryside. Today, the area is home to residential neighborhoods offering beautiful water views, tree-lined trails, and scenic waterfront bridges, perfect for walking or running.
For decades, Germantown thrived quietly, but as Indianapolis began to grow rapidly, the need for a new water source became clear. By the 1920s, the city had no above-ground reservoirs and relied heavily on the White River for its water supply. Several reservoir ideas had been proposed over the years, but none gained traction.
In 1913, the Indianapolis Water Company (IWC) came under the new management of Clarence H. Geist. Born in LaPorte, Indiana, to a farmer, Geist quickly set his sights higher. After exploring cattle ranching and real estate, Geist found success in utilities. One of his most notable accomplishments was transforming the Cloister Inn into the Boca Raton Club in Florida, a luxurious private retreat that became a sought-after destination.
On April 19, 1941, the Indianapolis Public Service Commission granted construction authorization and initial work began at the site a month later. Nearly 1,800 acres of land needed to be cleared for the reservoir. While some of this land was wooded, most of it was farmland previously owned by Germantown residents. On August 6, 1942, Fall Creek was redirected into outlet piping in the dam. By spring the following year, Geist Reservoir was filled to capacity and officially named for the former IWC president.
For years, the area surrounding Geist Reservoir remained a hidden gem, offering only limited access for fishing and picnicking. It wasn’t until 1953 that boating was allowed, opening up new possibilities for recreation. In 1978, after years of political debates, the Metropolitan Development Commission approved the Shorewood Corporation’s development plans. By the mid-1980s, Geist’s shores had been reshaped by a building boom.
While rumors swirl about the remains of a town—such as a church steeple visible at low water levels—there’s no evidence of any structures beneath the surface. What is confirmed, however, is the rich history embedded in the land. Geist Reservoir stands as a testament to both the area’s transformation and the lasting impact of its past on the community that now thrives around it.
Today, Geist Reservoir is much more than a picturesque body of water—it’s a hub for outdoor activities and local events, including the annual Geist Half Marathon. Celebrate its historical legacy by registering for the race and run through history. Join us for the 10k, 5k, and half marathon on September 13th. As you race along the scenic shores, you’ll not only experience the beauty of the present but also feel the echoes of the past.
