Troublesome Cr Watershed Site 42-1 is a low-hazard, earth dam located in Audubon County, Iowa, along the TR-Troublesome Creek. Built in 1979 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 30 feet and a length of 390 feet, the dam has a storage capacity of 166 acre-feet and covers a surface area of 7.3 acres.

Managed by the Iowa Department of Natural Resources, Troublesome Cr Watershed Site 42-1 is regulated, permitted, inspected, and enforced by state agencies to ensure its structural integrity and functionality. Despite being classified as "Not Rated" in terms of condition assessment, the risk assessment for this dam is moderate, with a hazard potential of low. The dam has not been modified over the years and currently does not have an emergency action plan in place.

Overall, Troublesome Cr Watershed Site 42-1 is an important infrastructure for water resource management in the area, providing essential services for both fire protection and flood risk reduction. With the proper regulatory oversight and management measures, this dam continues to play a crucial role in maintaining water quality and ensuring public safety in the region.