AY Honors/Water Environment/Answer Key

Water Environment

Skill Level

Unknown

Year

Unknown

Version

01.06.2025

Approval authority

Franco-Belgian Union

1

Research a waterway near you. Check the following items and submit a report on the observations made.

Good health indexes:

• Abundance of small fish and aquatic insects
• Clear water and fresh smell
• Banks covered with vegetation
• Some green algae in the water (light green)
• Presence of aquatic plants
• Presence of aquatic birds (kingfisher, etc.)
• Presence of crayfish, insects under the stones, etc.
• Sandbanks covered with vegetation indicating good water level stability

Water pollution indexes:

• Presence of a large amount of dark green algae
• Banks without (or little) vegetation
• Smell of putrefaction in the water
• Foaming on the surface of the water due to the presence of detergents
• Litter in the watercourse and on the banks
• Water with too much silt
• Absence of aquatic insects and fish
• Presence of oil slicks on the surface of the water
• Warehouses or factories dumping their waste into the river

2

Organize a clean-up operation for a watercourse or a pond in your municipality or of an individual (by presenting the project to them).

References

• Water Environment requirements from the French-Italian Swiss Conference