Final answer:
You can use a compass rose on a map to determine the direction of water.
Step-by-step explanation:
To determine the direction of water on a map, you can use a compass rose. A compass rose is a diagram that shows the orientation of the cardinal directions (north, south, east, and west) on a map. By referring to the compass rose, you can determine which direction the water flows based on the map's markings or symbols.
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