Dutch Hollow Subwatershed Site M-1, located in Woodbury, Iowa, is a local government-owned earth dam designed by the USDA NRCS in 1983 for fire protection, stock, and small fish pond purposes. This dam, situated on Koker Creek, has a height of 26 feet and a length of 500 feet, providing a storage capacity of 97 acre-feet. With a drainage area of 0.48 square miles, the dam serves the community with flood risk reduction measures while also offering recreational opportunities.

Despite its low hazard potential, Dutch Hollow Subwatershed Site M-1 is regulated by the Iowa DNR with state permitting, inspection, and enforcement in place. The dam's condition assessment is currently not rated, indicating a need for further evaluation. With a moderate risk assessment score of 3, there is room for improvement in risk management measures to ensure the safety and longevity of this essential water resource infrastructure. As climate change continues to impact water availability and extreme weather events, the importance of maintaining and enhancing dams like Dutch Hollow Subwatershed Site M-1 becomes increasingly crucial for water resource and climate enthusiasts in the region.