Wyoming Development Company No. 1, also known as Wheatland No. 1, is a privately owned irrigation structure located in Platte, Wyoming. This earth dam, designed by J A COLE and completed in 1960, serves the primary purpose of irrigation and stands at a height of 45 feet, with a storage capacity of 11,590 acre-feet. The dam spans 6,600 feet in length and is situated on Sybille Creek offstream, with a controlled spillway width of 4 feet.

The dam's significant hazard potential and fair condition assessment have prompted inspections every 5 years, with the last assessment conducted in May 2017. While the risk assessment indicates a very high risk level, the dam's emergency action plan status and risk management measures are currently unspecified. With Liz Cheney (R) representing Congressional District 00, Wyoming, the Wyoming Development Company No. 1 plays a crucial role in water resource management and climate resilience efforts in the region.

Overall, Wyoming Development Company No. 1 stands as a key infrastructure for irrigation in the area, highlighting the importance of maintaining and monitoring such structures for the safety and sustainability of water resources. The dam's location, design, and operational status demonstrate the intricate balance between human development and environmental conservation, making it a focal point in the efforts to address water security and climate challenges in Wyoming.