Five indices are used to investigate the whole picture of a river environment, including the river water, the living things, the scenery, and its use in our daily lives. Each index has three to five items (called separate indicators) used to investigate the river condition.
Evaluate each separate indicator on a scale of 3 to 1 by observing the river conditions.
If possible, write the reasons why you chose your ranking.
You can start with any indicator that seems appropriate.

4. Pleasant waterfront environment

This is investigated by the human senses: How beautiful and pleasant is the water environment?

*For more detailed information,
please refer to the Ministry of the Environment manual "Let's go to a river together! (PDF)".

(1) Scenery (feel)

Are the river and its environment beautiful?

Stand on the riverside and feel whether the river and its surrounding scenery are beautiful. Go to the following locations to observe the river.

  • A place where you can observe the flow of the water.
  • A place where you can observe the other side of the river.
  • A place where you can observe the river from a higher position, for example, on a bridge.

Beautiful (Scale 3)

Average (Scale 2)

Not beautiful (Scale 1)

(2) Trash (visual)

Is trash visible?

Observe the amount of waste floating on the river or being dumped along the riverside and check whether the waterfront environment is visually pleasant.

No trash (Scale 3)

Some trash (Scale 2)

A lot of trash (Scale 1)

(3) Touching the water (touch)

Do you want to touch the river water?

On hot days in the summer, we often feel like going into rivers or touching the water. Do you want to touch the river water? Touch the water and feel whether it is pleasant.

I want to touch it (Scale 3)

I don’t mind touching it (Scale 2)

I don’t want to touch it (Scale 1)

(4) Smell along the riverside (smell)

What do you smell along the riverside?

The smell along the riverside is not the smell of water but rather the entire river’s smell including the vegetation, forests, and paddy fields near the riverside. Investigate the entire smell and all the scents when you are on the riverside or riverbank.

Scale Smell
3 A pleasant smell
2 No specific smell
1 An unpleasant smell

Take a deep breath and feel the smell.

(5) Sound along the riverside (audial)

What do you hear along the riverside?

You hear various sounds along the riverside: the sound of water flowing, the sound of overflowed water from weirs, the songs of water birds, the sound of wind blowing over the water surface, and the voices of children playing along the riverside. Investigate the various sounds including the pleasant sound of the river water flowing and the sounds coming from the surroundings.

Scale Sound
3 The pleasant sound of the river
2 No specific sounds
1 Unpleasant sounds or noises

Let's listen to it.

All photos shown here are of rivers in Japan. When the number of overseas surveys increases in the future, we plan to present photos of overseas rivers here. We hope that with your cooperation, surveys will be conducted widely around the world.

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