Okutama cesium level seen spiking, Japan Times by Mizuho Aoki, Oct. 8, 2011:
An aerial radiation survey of the capital and Kanagawa Prefecture has revealed the northwest tip of Tokyo was tainted by an unusually high amount of fallout [... in] the mountainous Okutama region on Tokyo’s western fringe. Radiation readings in the area were the highest of the two prefectures at 100,000 to 300,000 becquerels of radioactive cesium per square meter.
The hourly radiation readings in the area hovered between 0.2 and 0.5 microsievert, but a few spots had higher levels between 0.5 and 1.0 microsieverts, science official Hirotaka Oku said. [...]
- “Formed by the construction of Ogochi Dam in the upstream of Tama River to serve as a reservoir of drinking water for Tokyo metropolitan area.”
- “Lake is said to be the world’s largest among the reservoirs used solely for city water supply.“
Published: October 9th, 2011 at 9:50 am ET