Lundberg Dam, located in Montgomery, Iowa, was completed in 1967 by the USDA NRCS and serves multiple purposes including fire protection, stock, and small fish pond. The earth dam stands at 31 feet high and spans a length of 770 feet, with a storage capacity of 67 acre-feet. The dam is state-regulated by the Iowa DNR and is inspected regularly to ensure its safety and functionality.

Despite being classified as having a low hazard potential, Lundberg Dam presents a moderate risk level due to its location on TR-Ramp Creek. The dam's uncontrolled spillway and soil foundation further contribute to its risk assessment. The dam has not been rated for its condition, but it meets state inspection requirements and is equipped for emergency response if needed. With a surface area of 5.7 acres and a drainage area of 0.57 square miles, Lundberg Dam plays a crucial role in water resource management in the area.

Overall, Lundberg Dam stands as a vital structure for water resource management in the region, providing essential services for fire protection, stock, and small fish pond purposes. While its hazard potential is low, its moderate risk level underscores the importance of regular inspections and maintenance to ensure the safety and reliability of the dam. With state regulation and oversight by the Iowa DNR, Lundberg Dam continues to be a key feature in the local water infrastructure for the community of Essex and beyond.