The Davis Subwatershed M-18560 is a vital water resource located in Woodbury, Iowa, specifically in the city of Turin. Managed by the local government, this earth dam was completed in 1958 by the USDA NRCS and serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 35 feet and a storage capacity of 188 acre-feet, it covers a surface area of 5.6 acres and drains a 3.18 square mile watershed area.

Although categorized as having a low hazard potential, the Davis Subwatershed M-18560 is regulated by the Iowa DNR and undergoes regular state oversight, inspection, and enforcement. The dam's spillway type is uncontrolled, with a length of 300 feet, and is situated along the Cottonwood Hollow river or stream. Despite being in moderate risk (3), the condition assessment is not rated, and certain emergency preparedness measures such as an Emergency Action Plan (EAP) are yet to be established. Overall, this subwatershed plays a crucial role in water management and protection within the region, emphasizing the importance of its maintenance and monitoring for long-term sustainability.