Mannō Lake

What it is

• The largest irrigation pond in Japan, located in Kagawa Prefecture.
• Founded by Michimori no Ason between 701 and 704.
• The famous Buddhist monk Kūkai repaired the pond in 821.
• Designated as a National Place of Scenic Beauty and World Heritage Irrigation Structure.

What to see

• A massive pond with a circumference of approximately 20 kilometers.
• The historic sluice gate, which is a Registered Tangible Cultural Property.
• A dam standing 32 meters high with a vast storage capacity.
• One of Japan's 100 Soundscapes, recognized for its unique auditory environment.

When to go

• Mid-June marks the start of the annual water release for irrigation.

Notes written by Japan Gems from facts in Japanese Wikipedia.