Lawson Subwatershed Site 2-1 in Iowa is a critical water resource managed by the local government and designed by USDA NRCS. This site plays a crucial role in fire protection, stock, and small fish pond purposes, as well as flood risk reduction. The earth dam, completed in 1968, stands at a height of 26 feet and has a storage capacity of 42 acre-feet, with a surface area of 2.8 acres and a drainage area of 0.2 square miles.

Located in Monona County, Iowa, near Castana, this dam on the TR-Maple River has a low hazard potential and a moderate risk assessment rating. While it has not been inspected or assessed for its condition recently, it is regulated and permitted by the Iowa DNR. The dam's design and construction by the Natural Resources Conservation Service ensure its structural integrity for emergency situations, although further evaluation may be needed for maintenance and risk management measures.

Water resource and climate enthusiasts will find Lawson Subwatershed Site 2-1 an intriguing case study of sustainable water management in rural Iowa. With its multifaceted purposes and historical significance, this dam serves as a valuable asset for the community's water supply, agricultural needs, and environmental conservation efforts. As climate change impacts water resources, understanding and monitoring sites like this are essential for adapting to future challenges and ensuring the resilience of our water infrastructure.