Located in Washoe, Nevada, Hill Dam Number 1 was completed in 1911 by the USDA NRCS and serves as a vital water resource for irrigation purposes. The dam stands at a height of 22 feet, with a hydraulic height of 17.5 feet and a structural height of 25 feet, holding a maximum storage capacity of 660 acre-feet and a normal storage of 450 acre-feet. Situated on Mosquito Creek, the dam has a low hazard potential but is currently assessed as being in poor condition, highlighting the need for maintenance and upgrades to ensure its continued functionality.

Despite its age, Hill Dam Number 1 remains an essential infrastructure for fire protection, stock watering, and small fish pond purposes in the region. The dam spans a length of 325 feet and has a spillway width of 20 feet, allowing for a maximum discharge of 200 cubic feet per second. Although the dam has undergone modifications in 1954 to enhance its hydraulic and structural integrity, ongoing inspections by the Nevada DWR are necessary to monitor its condition and safety. With a moderate risk assessment rating, proper risk management measures must be implemented to mitigate any potential hazards associated with the dam.

As a privately owned dam in a state-regulated jurisdiction, Hill Dam Number 1 is subject to regular inspections and enforcement by the Nevada DWR to ensure compliance with safety standards. Despite its current poor condition assessment, the dam's historical significance and essential role in water resource management underscore the importance of investing in its maintenance and upkeep. With careful monitoring and proactive risk management measures, Hill Dam Number 1 can continue to support irrigation and other water-related activities in the Washoe County area for years to come.