Saitama Prefecture: High School Students Host River Life Discovery Festival at Koshigaya Lake Town

Saitama Prefecture is advancing initiatives to deepen public interest in rivers as part of the 'SAITAMA River Supporters Project' (commonly known as 'RibaSapo').

As part of these efforts, an event led by high school students will be held at Koshigaya Lake Town.

At this event, high school members of the RibaSapo program—engaged in research on conserving the endangered species *Microphysogobio musashino* (Musashi Tomyo) and ecological surveys of invasive species such as the red-necked longhorn beetle—will present their daily activities through poster exhibitions and workshop-style sessions.

The poster displays include fun mystery quizzes designed to deepen knowledge about river creatures, which visitors can enjoy in a stamp rally format.

Additionally, numerous engaging activities will be offered, including a fishing game featuring native Saitama fish species and a wall-mounted aquarium, suitable for river enthusiasts and young children alike.

We encourage everyone to attend and learn more about rivers, making them a more familiar and cherished part of your summer.

Event Overview

1. Date and Venue

Date: Saturday, July 11, Reiwa 8 (2026), 10:00–16:00

Venue: Tsubasa no Hiroba (Wings Plaza), 1st Floor, AEON Lake Town kaze (4-2-2 Lake Town, Koshigaya City, Saitama Prefecture)

Organizer: SAITAMA River Supporters Project (Saitama Prefectural Government, Environmental Department, Water Environment Division; Koshigaya Environmental Management Office)

Cooperation: Urawa Gakuyu Gakuen Junior & Senior High School, Saitama Prefectural Kasukabe High School, Saitama Prefectural Kawagoe Girls' High School, Sato Ei Gakuen Eiho High School, Saitama Prefectural Kumagaya Girls' High School, Epic Enviro Buddies (a student-led circle active in Saitama conducting cleanups and wildlife surveys)

2. Event Program

High School Poster Presentations

- Urawa Gakuyu Gakuen Junior & Senior High School (Loach surveys in Saitama)

- Saitama Prefectural Kasukabe High School (Wildlife surveys in the Kurokawa River basin)

- Saitama Prefectural Kawagoe Girls' High School (Conservation of *Neocaridina* shrimp in the Koma River basin, ecological survey of the red-necked longhorn beetle)

- Sato Ei Gakuen Eiho High School (Environmental survey of the Shibukawa River basin—water quality, plankton, riparian vegetation)

- Saitama Prefectural Kumagaya Girls' High School (Improving rearing environments for *Microphysogobio musashino* in the Moto-Arakawa River basin) ※Poster exhibition

- Epic Enviro Buddies (Ecology of ayu in the Arakawa River basin, life cycle of eels) ※Poster exhibition

Workshops (Invasive and Rare Species Karuta, Storytelling, Loach specimen crafting)

Fish Fishing Game

Wall-Mounted Aquarium

Stamp Rally (Collect stamps to exchange for gifts)

About the SAITAMA River Supporters Project

This is a prefecture-supported project that promotes collaborative efforts among individuals, businesses, and organizations for river conservation and coexistence (utilization).

For more information, visit the RibaSapo portal site.

What is RibaSapo? (RibaSapo Portal Site)

Contact:

Water Environment Division, Environmental Department

Direct: 048-830-3083 Ext. 3087

Email: a3070-13@pref.saitama.lg.jp

● Event Flyer

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