Oirase Stream and Lake Towada Nature Walk Course

The Oirase Stream runs only about fourteen kilometers from Lake Towada, yet it packs in waterfalls large and small, moss covered rocks, and a riverside path, making it a natural gallery best enjoyed on foot. Its source, Lake Towada, is a mysterious body of water born from a double caldera. This one day course walks along the stream and then rests by the lake, immersing you fully in nature.

Course Route

9:00 Start at Yakeyama, the Oirase entrance The trailhead of the riverside path. From here you walk beside the clear water.

9:30 The Ashura rapids (about 90 minutes) A wild, symbolic stretch of the Oirase where cameras rarely stop clicking.

11:00 Turn back at Choshi Otaki Falls (about 1 hour) The only waterfall on the main stream, roaring and drenched in spray.

12:00 Lunch near Nenokuchi (about 1 hour) Eat at Nenokuchi, where the stream ends, then head on to Lake Towada.

13:30 Lake Towada sightseeing boat (about 50 minutes) Board the boat at Nenokuchi and see the full sweep of the quiet caldera lake from the water. The fare is around 1,760 yen for adults (out of service in winter).

15:00 Maiden statue and Yasumiya (about 1 hour) The lakeside symbol of Towada, with a statue by the sculptor Kotaro Takamura.

16:00 End of the walk Fill your lungs with the clear air and start for home.

Highlights

The charm of the Oirase lies above all in the ever changing faces of the water. White spray leaping over rocks, still deep pools, streams that split into many threads. Fresh greenery and autumn leaves reclothe it each season, so it never grows dull no matter how often you come. Lake Towada is remarkably clear, and the contrast of sky and mountains mirrored on its surface is superb. The boat between Nenokuchi and Yasumiya offers a full view of the lake that no land route can match.

Access and Tips

The riverside path has little slope and walks easily, but covering the whole route takes several hours. A smart approach is to use the JR bus or the Towada Kanko Dentetsu bus to focus on select sections. Yakeyama, the Oirase Stream, Nenokuchi, and Yasumiya are all linked by bus. Good shoes and a light jacket, even in summer, bring peace of mind. Roads are very crowded in autumn leaf season, so an early departure is best.

Practical Travel Notes

• Fare guide: Walking the Oirase riverside path is free. The Lake Towada sightseeing boat is around 1,760 yen for adults (out of service in winter).
• Time needed: Walking the whole stream takes several hours. Focusing on sections by bus and including the boat, allow about six to seven hours overall.
• Access: Yakeyama, the Oirase Stream, Nenokuchi, and Yasumiya are linked by the JR bus and the Towada Kanko Dentetsu bus. Frequency varies by season and hour, so check the timetable.
• Walking: The path has little slope and walks easily, though some stretches run beside the road. Combining walking sections with bus rides is efficient.
• Clothing and gear: The riverside stays cool even in summer, so a layer helps. Comfortable shoes are essential.
• Crowd notes: Roads and buses are very crowded in autumn leaf season. Aim for an early start and allow extra time.

A Quick Tip

Pause often along the stream and listen closely to the sound of the water. The slower you walk, the more deeply the beauty of the Oirase reveals itself. Walking all fourteen kilometers takes stamina, so focusing on the section rich in highlights, such as from the Ashura rapids to Choshi Otaki Falls, and using the bus or boat for the rest lets you enjoy it without strain.