Nihles, a private dam located in Grant, Wisconsin, serves primarily as a flood risk reduction structure along an unnamed tributary to Bacon Branch. Built with an earth core and stone foundations, the dam stands at a height of 24.5 feet with a hydraulic height of 15 feet. Its purpose also includes recreation, offering a surface area of 5 acres and a drainage area of 0.41 square miles.

Despite its low hazard potential and fair condition assessment, Nihles poses a very high risk, designated as level 1. The dam has a storage capacity of 59.1 acre-feet and a maximum discharge of 225 cubic feet per second. While last inspected in July 2017 with a frequency of 10 years, the dam's emergency action plan status and risk management measures are currently unknown. With its controlled spillway and state-regulated status under WIDNR, Nihles remains an essential structure for flood control in the area.

Enthusiasts of water resources and climate change will find Nihles to be a crucial component in managing flood risks in the region. Its location, design, and purpose highlight the importance of sustainable water infrastructure to protect communities and the environment. As climate variability continues to impact water resources, Nihles stands as a testament to the ongoing efforts in maintaining and monitoring essential structures for flood risk reduction.