Which color on a map represents water?

• A. Black
• B. Brown
• C. Green
• D. Blue

Answer: (D)

The color blue is universally recognized on maps as the representation of water bodies. This convention is employed consistently across various types of maps, including topographical, nautical, and recreational maps. The use of blue makes it easy for individuals to identify rivers, lakes, oceans, and other water features quickly. In contrast, other colors such as black typically denote roads, buildings, and other structures; brown often represents elevation or contour lines; and green is usually indicative of vegetation or parks. Thus, blue's association with water enhances map readability and user understanding by providing a clear and intuitive visual cue for locating aquatic features.