What color on a map indicates aquatic features?

The color blue on a map is universally used to represent aquatic features, such as rivers, lakes, ponds, and oceans. This color choice helps to visually distinguish water bodies from land features, simplifying navigation and orientation for map readers. For instance, on topographic or navigational maps, water-related elements are clearly marked in blue, which makes it easier for individuals to identify and understand the geographical layout of the area being depicted.

In contrast, red often signifies man-made structures or political boundaries, black typically represents roads, buildings, and other physical features, while green is generally used to indicate vegetation, parks, or agricultural areas. This systematic use of color makes maps user-friendly and enhances their overall effectiveness in conveying geographic information.