Arakawa No. 1 Retention Basin

What it is

• A flood control facility spanning from Sakura Ward to Toda City.
• A retention basin with a storage capacity of thirty-nine million cubic meters.
• A project completed in 2003 to manage water from the Arakawa and Kamogawa rivers.
• The site contains a reservoir known as Lake Saiko.

What to see

• Lake Saiko, a reservoir completed in 1997 located within the basin.
• The Yakult Toda Baseball Stadium situated on the grounds.
• The Tokyo Gaikan Expressway crossing the area via Sakitama Bridge.
• An eight kilometer stretch of engineered basin landscape.

When to go

• Water levels are lowered by over two meters from July to September.

Notes written by Japan Gems from facts in Japanese Wikipedia.