Dd No Sp-9, located in Towanda, Kansas, along the Four Mile Creek, is a local government-owned dam designed by the USDA SCS and regulated by the KS Dept. of Agriculture. Completed in 1994, this earth dam serves the primary purpose of flood risk reduction, with additional functions for debris control. With a dam height of 24 feet and a length of 2930 feet, Dd No Sp-9 has a storage capacity of 1059.6 acre-feet, providing crucial protection to the surrounding area.

Despite its low hazard potential and moderate risk assessment, Dd No Sp-9 has not been rated for its condition assessment. This dam features an uncontrolled spillway with a width of 50 feet and no outlet gates. As a key structure in the flood risk reduction strategy for the region, Dd No Sp-9 plays a vital role in managing water resources and protecting the community from potential disasters. With its location in a high-risk flood zone, regular inspections and maintenance are essential to ensure the dam's continued effectiveness in safeguarding the area.

As water resource and climate enthusiasts, understanding the details and significance of structures like Dd No Sp-9 is crucial for promoting sustainable water management practices and adapting to the challenges of a changing climate. By staying informed about the design, operation, and regulatory oversight of dams like Dd No Sp-9, enthusiasts can contribute to the resilience of water infrastructure and the protection of communities in the face of increasing environmental risks.