Hidden Dam, also known as Hensley Lake, is a Federal-owned structure located in Madera, California. Built in 1975 by the US Army Corps of Engineers, the dam stands at 140 feet tall and has a maximum storage capacity of 116,727 acre-feet. Its primary purpose is flood risk reduction, but it also serves for hydroelectric power generation, irrigation, and recreation. The dam is situated on the Fresno River and covers a surface area of 1570 acres.

With a high hazard potential, Hidden Dam is continuously monitored and managed by the US Army Corps of Engineers to mitigate flood risks. The agency regularly inspects the dam, updates emergency action plans, and collaborates with local emergency managers to ensure preparedness in case of a dam-related emergency. Despite its risk management measures, the dam's limited water storage capacity and the potential for severe weather events to overwhelm the system highlight the importance of ongoing vigilance and maintenance. As the agency works to address all types of flood risks associated with the dam, additional details specific to Hidden Dam will be provided in the future to enhance understanding and preparedness.