Located in Bourbon County, Kansas, the I-1b dam serves as a crucial structure for flood risk reduction along the Hinton Creek-TR. Completed in 2014, this earth dam stands at 33.1 feet high with a storage capacity of 155.54 acre-feet. Despite its low hazard potential, the dam is regulated by the Kansas Department of Agriculture and undergoes regular inspection, permitting, and enforcement to ensure its safety and functionality.

Managed by the local government, I-1b is designed by AG Engineering and primarily serves the purpose of flood risk reduction. With a normal storage capacity of 28.13 acre-feet and a surface area of 5.1 acres, this dam plays a critical role in mitigating the impact of potential flooding events in the region. While currently rated as "Not Rated" in terms of condition assessment, the dam's risk assessment stands at a moderate level (3), warranting ongoing monitoring and risk management measures.

As part of the Tulsa District of the US Army Corps of Engineers, I-1b does not have any associated structures or federal agency involvement. Its uncontrolled spillway, with a width of 100 feet, further enhances its flood control capabilities. While the dam has not been officially rated for emergency action preparedness, its strategic location and design highlight its importance in safeguarding the local community against flood hazards.