Hubble Site No. 1 in Harper, Kansas, is a privately owned Earth dam constructed in 2002 by the USDA NRCS for fire protection, stock, and small fish pond purposes. The dam stands at a height of 16.4 feet and spans a length of 385 feet, creating a reservoir with a storage capacity of 60.7 acre-feet and a surface area of 5.47 acres. Situated on Beaver Creek-TR, this dam plays a crucial role in water resource management in the region.

Despite its low hazard potential, Hubble Site No. 1 has not been rated for its condition assessment. The dam features a spillway width of 50 feet and has no outlet gates. While it has not been inspected since its completion in 2002, the dam's proximity to the community underscores the importance of regular maintenance and monitoring for its continued safe operation. Water resource and climate enthusiasts will find Hubble Site No. 1 to be a fascinating case study in sustainable water infrastructure development and management in rural Kansas.