Rosa Dam, located in Harvey, Iowa, is a private earth dam constructed in 2001 by the NRCS for fire protection, stock, and small fish pond purposes. With a height of 33 feet and a length of 300 feet, this dam has a storage capacity of 37 acre-feet and serves the TR- English Creek. It is regulated by the Iowa DNR and has a low hazard potential, rated as moderate risk (3).

Despite being a privately owned structure, Rosa Dam is subject to state jurisdiction, permitting, inspection, and enforcement. It has a spillway width of 1 foot and is designed for uncontrolled spillway discharge. The dam's condition is currently not rated, and there is no Emergency Action Plan (EAP) in place. With a surface area of 2.7 acres and a drainage area of 0.06 square miles, the dam plays a crucial role in water resource management in Lucas County, Iowa.

Water resource and climate enthusiasts will find Rosa Dam intriguing for its design, purpose, and risk assessment. As a vital infrastructure for fire protection and livestock management, this earth dam contributes to the local ecosystem while also posing a moderate risk that requires ongoing management measures. Its location on TR- English Creek and association with the NRCS make it a significant feature in the water management landscape of Iowa, highlighting the intersection of human development and environmental conservation.