Estes Dam No 1, also known as Shirley Dam No 2, is a privately owned structure located in Grantville, Kansas along Muddy Creek-TR. Built in 1963 by the USDA NRCS, this earth dam stands at a height of 23 feet and spans 340 feet in length, with a storage capacity of 209.8 acre-feet. Its primary purposes include fire protection, stock watering, and serving as a small fish pond, while also providing debris control for the surrounding area.

The dam is regulated by the Kansas Department of Agriculture and undergoes regular state inspections to ensure its safety and compliance with regulations. With a significant hazard potential, it is important that emergency plans are in place, although the condition assessment is currently listed as "Not Rated." The dam's last inspection was conducted in May 2015, with a recommended inspection frequency of every 5 years to monitor its structural integrity and functionality. Overall, Estes Dam No 1 plays a crucial role in water resource management and climate resilience efforts in Jefferson County, Kansas.