Jett Subwatershed Site 16-1, located in Woodbury County, Iowa, is a dam designed by the USDA NRCS for multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. Completed in 1966, this earth dam stands at a height of 36 feet with a length of 447 feet and a storage capacity of 46 acre-feet. The dam serves the community of Rolly Springs and is regulated by the Iowa DNR, with state permitting, inspection, and enforcement in place to ensure its safety and functionality.

With a low hazard potential and a moderate risk assessment rating, Jett Subwatershed Site 16-1 is a vital infrastructure for water resource management in the area. The dam's primary purpose and design make it a key asset for fire protection, stock watering, and flood management. Despite its age, the dam's condition remains unrated, indicating the need for ongoing monitoring and maintenance to uphold its structural integrity and operational effectiveness. The dam's location on the TR-West Fork Little Sioux river adds to its significance in managing water resources and supporting the local ecosystem.

As an essential part of the local government's infrastructure, Jett Subwatershed Site 16-1 plays a crucial role in water management and climate resilience efforts in Woodbury County, Iowa. With its regulated status and multiple purposes, including flood risk reduction, the dam contributes to the community's safety and water resource sustainability. As water resource and climate enthusiasts, understanding the importance of structures like Jett Subwatershed Site 16-1 is key to advocating for responsible water management practices and ensuring the resilience of our natural environment in the face of changing climate conditions.