Located in Buena Vista County, Iowa, the Garton Subwatershed M-4619 is a crucial water resource managed by the local government with oversight from the Iowa Department of Natural Resources. Constructed in 1951 by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock water supply, and flood risk reduction for the surrounding area. With a storage capacity of 89 acre-feet and a drainage area of 0.62 square miles, the dam plays a vital role in managing water resources in the region.

The Garton Subwatershed M-4619 dam stands at a height of 27 feet and is classified as having a low hazard potential with a moderate risk assessment. While the condition assessment is currently not rated, regular state inspections, permitting, and enforcement ensure the safety and functionality of the dam. The dam's spillway, categorized as uncontrolled, helps to regulate water flow during periods of high discharge. Despite its modest surface area of 5 acres, the dam provides essential water storage and flood protection benefits for the local community.

As a part of the larger watershed system, the Garton Subwatershed M-4619 plays a critical role in water management and climate resilience efforts in the region. With its strategic location along the TR-Little Sioux River, the dam helps to mitigate flood risks and protect downstream areas. Managed by the local government and designed by the USDA NRCS, this earth dam exemplifies the collaborative approach needed to sustainably manage water resources and adapt to changing climate conditions in Iowa.