Bacon Creek Watershed Site J-4, located in Woodbury County, Iowa, is a low hazard potential earth dam completed in 1985 by the USDA NRCS. This site plays a crucial role in water resource management, with a drainage area of 0.52 square miles and a storage capacity of 61 acre-feet. Despite its relatively small size, this dam serves an important purpose in flood control and water storage for the region.

Managed by the local government and regulated by the Iowa DNR, Bacon Creek Watershed Site J-4 has been deemed to have a moderate risk level. With a spillway type of uncontrolled and a structural height of 20 feet, this dam has not been rated for its condition assessment, indicating a need for further evaluation. The site's proximity to the TR- Floyd River highlights its significance in the overall watershed management strategy for the area, making it a key location for water resource and climate enthusiasts to monitor and study.