Larson Dam, also known as Wetland #1, is a private earth dam located in Sioux County, North Dakota. Designed by USFWS and completed in 2001, this dam serves multiple purposes including fire protection, stock, and small fish pond maintenance. With a height of 19.5 feet and a length of 550 feet, Larson Dam has a storage capacity of 205.1 acre-feet and a drainage area of 9.63 square miles.

Situated on Cedar Creek-Tr, Larson Dam is regulated by the North Dakota State Water Commission and is subject to state permitting, inspection, and enforcement. With a spillway width of 90 feet and a low hazard potential, this dam has not been rated for its condition assessment. Despite its moderate risk level, Larson Dam does not have an Emergency Action Plan in place, and its risk management measures are currently unspecified. Overall, Larson Dam serves as a key infrastructure for water resource management in the region.

For water resource and climate enthusiasts, Larson Dam represents an important piece of infrastructure that plays a crucial role in fire protection, livestock maintenance, and small fish pond operations in North Dakota. As a privately owned dam with state regulation and oversight, Larson Dam serves as a testament to the collaboration between private entities and government agencies in managing water resources. With its low hazard potential and moderate risk level, Larson Dam highlights the importance of proper risk assessment and management in ensuring the safety and sustainability of water infrastructure projects.