Balch Diversion, also known as Black Rock, is a private structure located in Balch Camp, California, along the North Fork Kings River. Completed in 1927, this concrete dam stands at 135 feet high and serves a primary purpose of hydroelectric power generation. With a storage capacity of 1,295 acre-feet, Balch Diversion plays a crucial role in water resource management in Fresno County.

Managed by the Federal Energy Regulatory Commission, Balch Diversion has a significant hazard potential and a moderate risk assessment rating. Despite its age, the dam has not undergone a recent condition assessment, but regular state inspections ensure its structural integrity. The dam's uncontrolled spillway can handle a maximum discharge of 47,000 cubic feet per second, making it a key component in flood control efforts in the region.

Situated in a scenic area with a surface area of 35 acres and a drainage area of 56 square miles, Balch Diversion is a vital piece of infrastructure for water supply and environmental conservation in Central California. With its historic significance and ongoing regulatory oversight, this hydroelectric facility continues to contribute to the sustainable management of water resources in the region, making it a compelling subject for water resource and climate enthusiasts to study and appreciate.