M.O. No. 1 is a privately owned dam located in Converse, Wyoming, completed in 1985 by designer John A. Lambert. This earth dam serves multiple purposes, including fire protection, stock maintenance, and serving as a small fish pond. With a height of 27 feet and a length of 220 feet, M.O. No. 1 has a storage capacity of 40 acre-feet and a surface area of 3 acres, serving as an essential resource in the region.

The dam is regulated by the state of Wyoming and is used for water management in the area. Despite having a low hazard potential and fair condition assessment, M.O. No. 1 is subject to regular inspections every five years to ensure its safety and compliance with regulations. With a moderate risk assessment rating, the dam plays a crucial role in the local ecosystem and water resource management, highlighting the importance of maintaining and monitoring its structural integrity for the community.

Located in a picturesque setting near Madison Drive and Cottonwood Creek, M.O. No. 1 is a vital piece of infrastructure contributing to the water supply and environmental conservation efforts in the region. With its uncontrolled spillway and earth construction, this dam exemplifies the fusion of functional design and natural beauty, embodying the intersection of water resource management and climate sustainability.