In order to see what the water operation in Tokyo is like, participants went to Ogouchi dam, which is located in Okutama area, west side of Tokyo.
I woke up 4:30 this morning in order to take the participants to the destination...
They were given the explanation about the dam and water operation in Tokyo area.
After that, they got into inside of the dam. This dam is 149 meters high and one of the dam operators taught us that the temperature of the bottom of the dam is 10 degrees Celsius throughout the year. It was like a natural air conditioner.
After that, participants had a barbecue looking down Tamagawa River. The landscape was fantastic and they were having so fun taking pictures and walking along the river.