Backbone Dam, located on the Maquoketa River in Iowa, was completed in 1938 and stands at a height of 33 feet with a length of 908 feet. The dam serves primarily for recreational purposes, offering a serene environment for visitors to enjoy activities such as fishing and boating on its 125-acre surface area. Managed by the Iowa Conservation Commission, the dam is state-regulated, inspected, and enforced by the Iowa Department of Natural Resources to ensure its safety and compliance with regulations.

With a maximum storage capacity of 1000 acre-feet and a normal storage capacity of 600 acre-feet, Backbone Dam plays a vital role in regulating the flow of the Maquoketa River and providing water for various uses. The dam's spillway, measuring 237 feet in width, is uncontrolled and allows excess water to flow downstream during periods of high flow. Despite being classified as having a significant hazard potential, the dam's condition assessment remains satisfactory, with a moderate risk level assigned. The surrounding area of Delaware County, Iowa, benefits from the recreational opportunities and water management provided by Backbone Dam, making it a valuable resource for both residents and visitors alike.