Austin No. 1 is a privately owned earth dam located in Johnson County, Wyoming, along Austin Draw. Built in 1991 by designer John A. Lambert, this dam serves multiple purposes including fire protection, stock, and small fish pond. With a height of 22 feet and a hydraulic height of 17 feet, the dam has a storage capacity of 217 acre-feet and a surface area of 24 acres.

Despite its low hazard potential, Austin No. 1 is currently assessed as being in poor condition. The last inspection in June 2019 revealed the need for improvements, but the dam remains state regulated with regular inspections, permitting, and enforcement. The spillway, with a width of 60 feet, is uncontrolled, and there are no outlet gates associated with the structure.

Water resource and climate enthusiasts may be interested in Austin No. 1 for its contribution to local water management and conservation efforts. As part of the Omaha District, this dam plays a crucial role in protecting against fire, providing water for livestock, and creating a habitat for small fish. However, ongoing maintenance and potential upgrades are needed to ensure the safety and effectiveness of this vital water infrastructure.