Fish Stockwater, located in Arvada, Wyoming, is a privately owned earth dam designed by Marvin E Young in 1971 for multiple purposes including fire protection, stock watering, and small fish pond habitat. The dam has a height of 44 feet and a hydraulic height of 39 feet, with a normal storage capacity of 36 acre-feet and a maximum storage of 52 acre-feet. Although the dam is primarily used for agricultural purposes, it also serves as a minor source of water for the local ecosystem.

Despite its low hazard potential, Fish Stockwater has been assessed as being in poor condition, with a moderate risk level. The dam is currently under the jurisdiction of the Wyoming State Engineer's Office, with state-regulated permitting, inspection, and enforcement practices in place. The last inspection in August 2018 revealed the need for improvement, highlighting the importance of regular maintenance and monitoring to ensure the safety and sustainability of this vital water resource in Johnson County. Climate and water resource enthusiasts should take note of Fish Stockwater as a key component of the local ecosystem and agricultural infrastructure.