Pleasant Valley No. 3, also known as Noeska Detention, is a privately owned earth dam located in Winona, Minnesota. Constructed in 1968 by the USDA NRCS, this structure serves primarily for flood risk reduction along the Pleasant Valley CR-TR. With a height of 27 feet and a length of 336 feet, the dam has a storage capacity of 23 acre-feet and a maximum discharge of 150 cubic feet per second.

Managed by the Minnesota Department of Natural Resources, Pleasant Valley No. 3 has a significant hazard potential and is rated in fair condition as of the last assessment in 2015. Despite its uncontrolled spillway and outlet gates, the dam is inspected every four years to ensure its integrity and safety. Situated within a moderate risk zone, this structure plays a crucial role in protecting the surrounding area from potential flooding events, showcasing the importance of proper water resource management and climate resilience in the region.

Water resource and climate enthusiasts can appreciate the engineering and regulatory efforts that have gone into maintaining Pleasant Valley No. 3. With its buttress core design and state-regulated operations, this dam stands as a testament to the ongoing efforts to mitigate flood risks and safeguard communities in Minnesota. As the climate continues to change, structures like Pleasant Valley No. 3 highlight the need for sustainable water management practices and adaptive strategies to address the growing challenges posed by a changing environment.