Eldon Rule is a privately-owned dam located in Linden, Wisconsin, along the TR East Pecatonica River. Built in 1964 for recreational purposes, the Earth-type dam stands at a height of 36.7 feet with a hydraulic height of 28 feet. It has a storage capacity of 240 acre-feet and covers a surface area of 12 acres, serving as a popular spot for outdoor activities in the region.

The dam is regulated by the Wisconsin Department of Natural Resources (WIDNR) and undergoes regular inspections to ensure its structural integrity. Despite its low hazard potential and fair condition assessment, the risk management measures for Eldon Rule are classified as moderate. With a drainage area of 1.6 square miles and a maximum discharge capacity of 179 cubic feet per second, the dam plays a vital role in water resource management for the surrounding area.

Eldon Rule's location in Iowa County, Wisconsin, and its proximity to Rock Island District make it an essential component of the local ecosystem and a key feature for water resource and climate enthusiasts to monitor. As efforts continue to maintain and enhance the dam's safety and functionality, it remains a significant landmark for both recreational enjoyment and environmental conservation in the region.