Question

What does the blue area in the map signify ?​

Answer 1

Answer:

The colors of the lines usually indicate similar classes of information: topographic contours (brown); lakes, streams, irrigation ditches, and other hydrographic features (blue); land grids and important roads (red); and other roads and trails, railroads, boundaries, and other cultural features (black).

Answer 2

Mainly the blue area in a map we see , signifies WATER