The Us 77 Road Fill Dam, also known as Ksnoname 1815, is a vital water resource structure located in Riley, Kansas. Constructed in 1967 by the USDA NRCS, USDA SCS, and Highway Commission, this earth dam serves multiple purposes including fire protection, stock or small fish pond, flood risk reduction, and others. With a height of 29 feet and a length of 1455 feet, the dam has a storage capacity of 234 acre-feet and covers a surface area of 1.41 acres.

Managed by the Kansas Department of Agriculture, the Us 77 Road Fill Dam is regulated, inspected, and enforced by state authorities to ensure its safety and functionality. Despite being classified as having a high hazard potential, the dam is currently in fair condition and undergoes inspections every three years. With a spillway width of 0 feet and no outlet gates, the dam plays a crucial role in managing water resources in the North Otter Creek-TR watershed, providing essential support to the local ecosystem and community.

Owned by the state and situated within the Kansas City District, the Us 77 Road Fill Dam is a key component of the region's infrastructure. With its strategic location and design, this earth dam continues to serve as a vital resource for water storage, flood control, and ecosystem management in Riley County. As water resource and climate enthusiasts, it is essential to recognize and appreciate the importance of such structures in safeguarding our environment and ensuring sustainable water management practices for future generations.