Collier Dam, located in Loveland, Iowa, was completed in 1974 and is owned privately. Designed by the USDA NRCS, this earth dam stands at 41 feet tall and stretches 375 feet in length, with a storage capacity of 90 acre-feet. The primary purpose of Collier Dam is for fire protection, stock, or small fish pond usage, serving the TR-Boyer River and covering a surface area of 4.1 acres.

Managed by the Iowa DNR, Collier Dam is regulated at the state level and undergoes regular inspections to ensure its structural integrity. With a low hazard potential and a moderate risk assessment rating, measures are in place to mitigate any potential risks associated with the dam. Despite not being rated for condition assessment, Collier Dam continues to serve its primary purposes effectively and safely, contributing to water resource management in the area.

With its picturesque location in Harrison County, Iowa, alongside the TR-Boyer River, Collier Dam stands as a testament to effective water resource management and the importance of private ownership in maintaining critical infrastructure. Its low hazard potential and moderate risk assessment highlight the ongoing efforts to ensure the safety and functionality of the dam for fire protection, stock, and small fish pond usage in the region.