Water represents a blue line on a map.
The blue line on a map usually represents a stream of water!
a blue line on a map means that it is water weather it is a stream river or lake
an equator line
A wavy blue line on a map usually indicates water. I could indicate a river, canal, or any type of waterway.
I am guessing that's a river.
equeater
the blue line represents Lakes, Streams , canal and mainly just water
The horizon
A stream,river or another body of water.
A blue line represents a river on a map so you know it is a river,a lake, or the sea
It usually stands for rivers or borders, depends which map you're looking at.