Groenedyk Dam, located in Mahaska County, Iowa, serves multiple purposes including fire protection, stock, and small fish pond management. Constructed in 1974 by the USDA NRCS, this private-owned Earth dam stands at a height of 30 feet and spans 330 feet in length. With a storage capacity of 36 acre-feet, the dam covers a surface area of 2.3 acres and drains a 0.18 square mile watershed of the TR-South Skunk River.

Managed and regulated by the Iowa Department of Natural Resources, Groenedyk Dam has a low hazard potential and a moderate risk level. Despite not being rated for condition assessment, the dam has not undergone any modifications since its last inspection in 1967. With no outlet gates or locks, the spillway is uncontrolled with a width of 0 feet. The surrounding area of Lake Keomah benefits from the dam's presence, providing essential water resources for both local wildlife and agricultural activities.

For water resource and climate enthusiasts, Groenedyk Dam offers a glimpse into the intersection of human infrastructure and natural ecosystems. As policymakers and stakeholders work to balance the needs of water management and environmental conservation, monitoring and maintaining structures like Groenedyk Dam will be crucial in ensuring the sustainability and resilience of our water resources in the face of changing climate conditions.