Lower Peters Canyon Retarding Basin, located in Lemon Heights, California, serves as a crucial flood risk reduction infrastructure along the Peters Can Wash. Completed in 1990, this earth dam stands at a height of 52 feet and has a storage capacity of 206 acre-feet, providing protection to the surrounding area from potential flooding events. The dam, owned by the local government and regulated by the Department of Water Resources for dam safety, plays a vital role in safeguarding the community from the hazards of high-risk potential associated with its location.

With a satisfactory condition assessment as of September 2017, the Lower Peters Canyon Retarding Basin remains a key piece of water resource infrastructure in Orange County. The dam's primary purpose of flood risk reduction is complemented by its secondary function of water supply, demonstrating its versatility in serving the local community. Regular inspections and enforcement by state regulatory agencies ensure the dam's continued reliability and safety for the residents and wildlife in the area.

As climate change continues to impact water resources and weather patterns, structures like the Lower Peters Canyon Retarding Basin become increasingly important in managing the risks of floods and ensuring sustainable water management practices. With high hazard potential but satisfactory condition, this dam stands as a testament to effective water resource management and the collaboration between local government and state agencies in protecting communities from the effects of extreme weather events.