Located in Woodbury, Iowa, the Jett Subwatershed Site M-6 is a local government-owned dam constructed in 2003 by the USDA NRCS. Situated on the TR- East Branch Wolf Creek, this earth dam stands at a height of 32 feet and spans 510 feet in length, with a storage capacity of 279 acre-feet and a surface area of 12.6 acres. Despite its low hazard potential and moderate risk assessment rating, the dam is currently not rated in terms of condition assessment.

Managed by the Iowa DNR, this dam is regulated, permitted, inspected, and enforced by the state, highlighting a commitment to water resource and climate protection in the region. With a primary purpose not specified, the Jett Subwatershed Site M-6 serves as a crucial infrastructure for water management in the area, ensuring the safety and efficiency of water flow and storage. As a significant component in the local watershed system, this dam plays a vital role in maintaining ecological balance and water security for the community of Little Sioux and surrounding areas.