Tucked away in the far western reaches of Tokyo lies Okutama Lake, a tranquil reservoir surrounded by forested mountains and rugged hiking trails. Although technically part of Japan’s bustling capital, this peaceful destination feels worlds apart from the noise and rush of city life. Formed by the Ogouchi Dam on the Tama River, Okutama Lake is a beloved retreat for outdoor enthusiasts, nature lovers, and anyone seeking a breath of fresh mountain air. For travelers wanting to explore the wilder side of Tokyo, this hidden gem offers a perfect blend of natural beauty and quiet reflection.
A Reservoir Rooted in History and Function
Okutama Lake was created in 1957 with the completion of the Ogouchi Dam, built as part of Tokyo’s post-war infrastructure development. The lake serves as a crucial water source for the capital, providing around 20% of its drinking water. At the time of construction, several villages were submerged, and more than 900 households were relocated. Today, the lake stands as both a symbol of engineering ambition and a testament to the sacrifices made for Tokyo’s growth.
Despite its utilitarian origins, Okutama Lake is anything but industrial. With a circumference of about 45 kilometers, the lake is encircled by mountains, including the scenic peaks of Mount Gozen and Mount Mito. The area is particularly popular in autumn, when the forest canopy transforms into a riot of reds and golds, reflected in the calm surface of the water. During spring and summer, the lake draws picnickers, cyclists, and hikers, offering a quiet respite from the city without ever leaving Tokyo’s borders.
Exploring the Trails and Vistas
One of Okutama’s greatest attractions is its extensive network of hiking trails. Whether you’re looking for a gentle lakeside stroll or a challenging mountain ascent, the area offers options for all skill levels. The trail around the lake itself is suitable for casual walkers and offers beautiful views of the water from various vantage points. For the more adventurous, the climb up Mount Mito rewards hikers with sweeping views of the lake, the Chichibu-Tama-Kai National Park, and even glimpses of Mount Fuji on clear days.
Several rest spots, observation decks, and suspension bridges provide perfect photo opportunities or moments of quiet contemplation. The Lake Okutama Floating Bridge, affectionately known as “Drum Bridge” due to its shape and floating drum-like platforms, allows visitors to walk directly over the water—an experience both surreal and serene.
Okutama Station, the final stop on the JR Ome Line, serves as the gateway to the lake. From there, local buses take visitors through winding mountain roads to the lakeshore. The journey itself is part of the adventure, with views of rushing rivers, deep valleys, and charming rural hamlets along the way.
Seasonal Beauty and Local Charm
While the lake is beautiful year-round, each season offers its own magic. In spring, cherry blossoms bloom along the approach roads and trails, while in summer, the cool mountain air offers a welcome escape from Tokyo’s humidity. Autumn is perhaps the most spectacular season, with vivid foliage creating a painterly landscape of reds, oranges, and yellows. Even in winter, when the crowds have thinned and snow dusts the peaks, Okutama exudes a quiet, austere beauty.
Local attractions add to the lake’s appeal. Nearby hot spring facilities like Moegi-no-Yu provide the perfect way to unwind after a long hike. Small roadside shops sell regional snacks like wasabi-infused pickles and handmade soba noodles. For those interested in culture, the Ogouchi Shrine and the Okutama Visitor Center offer insights into the area’s history and ecology.
A Natural Getaway Within Reach
Visiting Okutama Lake is like stepping into a different rhythm—one dictated not by timetables and screens, but by wind through leaves and the rippling surface of water. It is a rare place within Tokyo where visitors can reconnect with nature, experience the changing seasons in vivid detail, and find stillness in a modern world.
Whether you’re planning a day trip or a quiet weekend away from the city, Okutama Lake invites you to slow down, breathe deeply, and let the natural world take center stage.
More Information
Address
Okutama-machi, Nishitama-gun, Tokyo 198-0223, Japan
Access
From Tokyo Station, take the JR Chuo Line to Ome, then transfer to the JR Ome Line to Okutama Station. From there, local buses connect to the lake.
Admission
Free
Recommended Activities
Hiking, photography, seasonal foliage viewing, hot springs, cycling
Best Seasons to Visit
Spring (cherry blossoms), Autumn (foliage), Summer (cool retreat)