Hello Japan - Japan Travel Guide

Lake Okutama-ko

Travel Guide - Lake Okutama-ko


Lake Okutama-ko, the symbol of the Okutama area, is an artificial lake created with the construction of the Ogouchi Dam which blocks the Tama-gawa River. Oguchi Dam has a capacity of 185.4 million cubic meters, providing approximately 20% of the water used by the people in Tokyo. The lake is located in Chichibu Tama National Park and offers a nice harmony of natural beauty and man-made structures.
Surrounded by verdant nature, beautiful scenery can be enjoyed year-round. You can enjoy cherry blossoms in spring, fresh greenery in summer, colorful leaves in fall, and the frosty snowscape in winter. The seasonal views from the Oguchi Dam Observatory are also popular.
Two Uki-bashi (also called Drum-can-bashi) floating bridges are crossed over from south to north of Okutama-ko Lake. The floating bridge by the Ogouchi-jinja Shrine connects Ome-kaido Highway (National Highway 411) and Okutama Circular Road, which skirt the shore of the lake.

Opening HoursOpening Hours

  • Open 24 hours


  • No closing days

Price / Entrance FeePrice / Entrance Fee

  • Admission Free

Access / Public TransportAccess / Public Transport

  • 20 minutes from JR Okutama Station by the bus bound for Tanba, Kosuge or Okutama-ko. Get off at Okutama-ko Bus stop.

Address / LocationAddress / Location

  • Sakai, Okutama-machi Nishitama-gun, Tokyo, 198-0222