Lake Kameyama
Open by month
Open in January. No seasonal closure recorded.
Open in February. No seasonal closure recorded.
Open in March. No seasonal closure recorded.
Open in April. No seasonal closure recorded.
Open in May. No seasonal closure recorded.
Open in June. No seasonal closure recorded.
Open in July. No seasonal closure recorded.
Open in August. No seasonal closure recorded.
Open in September. No seasonal closure recorded.
Open in October. No seasonal closure recorded.
Open in November — at its best. Kameyama Autumn Festival in November with sightseeing boats through the autumn colors; lake festival fireworks in late September.
Open in December. No seasonal closure recorded.
Checked against the official site on 2026-10-15.

The reservoir of Kameyama Dam, completed in 1981 as Chiba's first and largest multipurpose dam. Boat houses line the shore, and in autumn you can tour the colored hills by boat.
Nearby
- Kameiwa Cave & Nomizo Falls ≈ 30 min by car
- Yoro Valley & Awamata Falls ≈ 45 min by car
- Seichoji Temple ≈ 45 min by car
- Mt. Kano: Kujukutani Observation Park ≈ 50 min by car
- Kasamori Kannon (Kasamori-ji) ≈ 55 min by car
Travel times are rough estimates by car.
- Best time
- November — Kameyama Autumn Festival in November with sightseeing boats through the autumn colors; lake festival fireworks in late September
- Getting there
- 7 min walk from Kazusa-Kameyama Sta. (JR Kururi Line, only a few trains a day) to the Kameyama tourist information center
- Good to know
- Free car park (about 20 cars) at the Kameyama tourist information center
- Time needed
- 1 h 30 min
Checked against the official Japanese website on 2026-10-15. Report outdated info