Located in Monona, Iowa, Mc Call Subwatershed Site 8-1 is a vital water resource managed by the USDA NRCS for fire protection, stock, and small fish pond purposes. Built in 1964, this Earth-type dam stands at 27 feet high and spans 320 feet, with a storage capacity of 80 acre-feet and a surface area of 4.3 acres. The dam serves to reduce flood risks and is regulated by the Iowa DNR, with state permitting, inspection, and enforcement in place to ensure its safety and functionality.

Situated on the TR-Little Sioux County Ditch, this dam has a drainage area of 0.62 square miles and a moderate risk assessment rating of 3. While the hazard potential is considered low, the condition assessment is currently not rated. Despite this, the dam appears to be well-maintained, with no reported issues or incidents. With its strategic location and importance for water management in the region, Mc Call Subwatershed Site 8-1 is a key asset for local government and a valuable resource for the community.