Site 102a, located in Holton, Kansas, is a key flood risk reduction infrastructure managed by the local government. This earth dam, completed in 2003, stands at a height of 30 feet and stretches 850 feet in length with a maximum storage capacity of 140.3 acre-feet. The dam serves the primary purpose of flood risk reduction for the Cross Creek-TR river or stream, covering a drainage area of 0.44 square miles.

Despite being rated with a low hazard potential, Site 102a is classified with a moderate risk level (3) based on the data available. The dam is currently in a not rated condition assessment status, with the last inspection conducted in December 2004. The design of the spillway allows for uncontrolled water release, with a spillway width of 30 feet. The site also lacks outlet gates and associated structures, highlighting its simplicity in design and operation. Overall, Site 102a plays a crucial role in managing flood risks in the area and contributes to the water resource management efforts in Jackson County, Kansas.