Simonsen Subwatershed Sta 142+42 Main, located in Cherokee, Iowa, is a vital water resource managed by the local government. This earth dam, completed in 1952 by the USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 33 feet and a storage capacity of 150 acre-feet, this dam plays a crucial role in managing water resources in the area.

Situated on Rock Creek, this dam has a low hazard potential and a moderate risk assessment rating. Despite not having a current condition assessment, it is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement to ensure its structural integrity and functionality. The dam's location, dimensions, and design make it a key feature in the watershed, contributing to water conservation efforts and providing essential services to the community.

Simonsen Subwatershed Sta 142+42 Main is a significant infrastructure project that exemplifies the importance of sustainable water management and climate resilience. With its strategic location, purposeful design, and state-regulated operations, this dam serves as a critical asset in protecting the environment, mitigating flood risks, and supporting the local ecosystem. Water resource and climate enthusiasts can appreciate the role of this dam in promoting water security and environmental stewardship in the region.