Ashmore Dam, located in Arbor, Iowa, is a private earth dam designed by NRCS and completed in 1996. The dam serves multiple purposes, including fire protection, stock watering, and small fish pond management. With a height of 25 feet and a length of 515 feet, Ashmore Dam has a storage capacity of 101 acre-feet and covers a surface area of 6.6 acres, with a drainage area of 0.38 square miles. The dam is regulated by the Iowa DNR and undergoes regular inspections, with a low hazard potential and a moderate risk assessment rating.

Situated on the TR-BRUCE BRANCH stream, Ashmore Dam is owned by a private entity and falls under state jurisdiction, with permitting, inspection, and enforcement conducted by the Iowa DNR. The dam features an uncontrolled spillway and is constructed with a stone core and soil foundation. Despite being in operation for over two decades, the dam's condition assessment is currently listed as "Not Rated," and it does not have an emergency action plan in place. The risk assessment for Ashmore Dam is moderate, with no reported incidents or modifications in recent years, making it a vital water resource for the local community.