The image depicts a diagram of a lake with two large lock gates, one on each side of the lake. The lake is labeled "Catun Lake" and is surrounded by land that has two lock gates labeled "Lock." The lock gates are positioned vertically, with one gate on the left side of the lake and the other on the right side. The lock gates appear to be part of a dam or barrier structure, likely used for controlling water levels and preventing flooding. The overall scene suggests a controlled water management system, possibly for hydroelectric power generation or flood control.