Located in South Lake Tahoe, California, the Emergency Effluent Holding structure serves as a critical water supply facility, completed in 1961 with a dam height of 27 feet and a storage capacity of 184 acre-feet. This earth dam on Tr Heavenly Vy Cr is regulated by the Department of Water Resources and has a high hazard potential, though its condition assessment in 2017 was deemed satisfactory. The dam's primary purpose is to support flood risk reduction, irrigation, and water supply in the region, making it an essential resource for the community.

Despite its age, Emergency Effluent Holding continues to play a vital role in managing water resources in El Dorado County. With state oversight in place for permitting, inspection, and enforcement, the dam ensures the safety and reliability of water supply for residents and businesses in the area. The structure's high hazard potential underscores the importance of regular maintenance and monitoring to mitigate risks and safeguard against potential emergencies in the future.

As climate change intensifies and water resources become increasingly strained, structures like Emergency Effluent Holding are becoming ever more crucial for water management and supply. With a comprehensive emergency action plan in place and regular assessments to ensure its integrity, this facility stands as a testament to proactive measures in protecting water resources and infrastructure in the face of evolving climate challenges.