Big Falls in Ladysmith, Wisconsin, is a gravity dam completed in 1923 primarily for hydroelectric power generation and recreation purposes. With a height of 50 feet and a length of 2196 feet, the dam has a storage capacity of 4000 acre-feet and a maximum discharge of 91000 cubic feet per second. The dam sits on the Flambeau River within the Detroit District and is regulated by the Federal Energy Regulatory Commission.

This dam presents a high hazard potential due to its size and location, with a very high risk assessment rating. Despite its age, the condition assessment of the dam is not available, and it has not been inspected since September 2020. The dam features a controlled spillway with a width of 320 feet and eight Tainter radial outlet gates. The surrounding area has a surface area of 369 acres and a drainage area of 1786 square miles, making it a critical water resource and climate management site.

For water resource and climate enthusiasts, Big Falls offers a fascinating glimpse into the engineering marvels of early 20th-century hydroelectric infrastructure. Its historic significance, combined with its vital role in power generation and water management, makes it a site worth studying and appreciating. As climate change continues to impact water resources, understanding and maintaining structures like Big Falls will be crucial for ensuring a sustainable future for generations to come.