Yui-Shiori
View the impressive dam that stops the Tenryu River and its fishway
NaganoLeisure

View the impressive dam that stops the Tenryu River and its fishway

About this spot

A hydroelectric dam towering in a valley surrounded by mountains along the middle Tenryu River. Standing before the massive embankment, you'll be overwhelmed by its scale. Fishways around the dam allow you to observe fish climbing upstream. The observation area offers views of the deep ravine carved by the Tenryu River. A family-friendly spot that combines impressive civil engineering structures with mountain scenery.

Fireworks details

Name: 泰阜村民夏まつり花火大会

Date & time: 7/25 (Sat) 19:40–21:00

Venue: 泰阜村・泰阜村総合グラウンド

Shells: approx. 450

2026年7月25日(土)、泰阜村総合グラウンドを会場に行われる、村をあげての夏まつりの花火大会です。約450発の花火が19時40分から21時まで打ち上がり、周囲を山に囲まれた静かな山あいに、次々と大輪の光が広がります。都市部の大規模な花火大会とは違い、間近で見上げる迫力と村のあたたかな雰囲気を一緒に味わえるのがこの花火大会ならではの魅力です。1年に一度、村中の人々が集まるこの夜は、山里の夏を締めくくる特別な時間になります。

Tips

荒天時の開催可否は村の公式発表で確認しましょう。駐車場は台数に限りがあるため早めの来場がおすすめです。終了後は帰りの道が混み合うことがあるので、少し余韻を楽しんでからの移動も一案です。

Food stalls

Food stalls: Yes

Based on previous years. Stall lineups change year to year. Please check the official site for the latest details.

Turn this into a day plan with stall time included
Source: hanabi.cloud

Tips

About 10 minutes by car from Michi-no-Eki Ryujinnosato Tenryu. Viewing areas are limited; please follow signs and view safely. Bring a hat as there's little shade in summer.

Best time to visit

About 1 hour. The dam lake's water surface shimmers beautifully in afternoon light.

Access & map

〒399-1203 Nagano Prefecture, Shimoina District, Tenryu Village, Hiraoka

Visit official website

Model course featuring this spot

2026 Yasutomi Village Summer Festival Fireworks - Full-Day Experience Course

Nagano

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