Shimek Forest Dam 1, located in Croton, Iowa, is a state-regulated earth dam constructed in 1950 by the USDA SCS. With a height of 24 feet and a length of 415 feet, this dam serves multiple purposes including fire protection, stock watering, small fish pond creation, and recreation. Situated on the TR-DES MOINES RIVER, the dam has a normal storage capacity of 63 acre-feet and a maximum storage capacity of 115 acre-feet, covering a surface area of 7.2 acres and draining a 0.19 square mile watershed.

Although assessed as having a low hazard potential, the dam has a moderate risk rating due to its age and condition assessment being marked as "Not Rated". The dam's spillway type is uncontrolled, with no outlet gates, locks, or inspections reported. Despite these concerns, the dam's risk management measures and emergency action plan status remain unknown. The dam is under the jurisdiction of the Iowa DNR and falls within the regulatory authority of the state, ensuring its continued compliance with safety standards and environmental protection guidelines.