Dear 100 Hour Board,
Why is the Vrbas River in Bosnia & Herzegovina an emerald green color? It's quite stunning.
-Bound for Bosnia
Dear Bound for Bosnia,
It doesn't look like any of us writers can give you a definite answer. I do, however, have three guesses:
- Green algae – These little critters like to live in rivers, and since they do not absorb green light, they can make the water appear green.
- Dissolved chemicals – Lime, copper, and other chemicals can make water appear blue, green, or turquoise.
- Reflection of surrounding foliage – From the pictures of the river I looked at, it appears that this river is surrounded by dense green foliage on both banks, which likely contributes to the river's color.
If any readers have a better answer, please comment!