Located in Waupaca, Wisconsin, Hartman Creek Number One is a state-regulated dam on the Hartman Creek river. Completed in 1939, this gravity dam stands at a height of 10.6 feet and has a storage capacity of 225 acre-feet, making it primarily used for recreation purposes. With a low hazard potential and a very high risk assessment rating, the dam has not been rated for its current condition, but regular inspections have been conducted to ensure its safety.

The dam's controlled spillway type and maximum discharge capacity of 1460 cubic feet per second highlight its importance in managing water flow and preventing flooding in the area. Despite its age, Hartman Creek Number One continues to serve as a vital water resource infrastructure, providing both recreational opportunities and essential water management functions. With the State of Wisconsin overseeing its permitting, inspection, and enforcement processes, the dam remains a key component in the region's water resource and climate resilience efforts.

For water resource and climate enthusiasts, Hartman Creek Number One represents a fascinating blend of historical engineering, environmental stewardship, and recreational value. As a gravity dam with a long-standing presence in the community, its role in water storage, flood control, and habitat preservation makes it an essential piece of the region's water infrastructure. With its risk assessment indicating a high level of importance in the area's water management strategies, Hartman Creek Number One stands as a testament to the ongoing efforts to balance human needs with environmental sustainability in the face of changing climate conditions.