How to build a dam in a flowing creek

Here the guys at Kongu Village are diverting the stream around/over the proposed dam position to allow construction to start. They've created a temporary dam feeding to a PVC pipe. Which is supported by a timber brace.

Now the team has diverted the water from the main stream, has assembled the steel cage and is pouring concrete (cement, stones and water) in the formwork to create the dam.

Here the guys are preparing the steel reinforcing cage before the formwork is placed. Each bar is embeded into the rock to "key" the dam in. The hole are made by hammering out with a crowbar by hand.