4.1 permanent river = perennial river
- On a topographic map, a perennial river may be represented as a continuous blue line that shows the river's path and direction of flow. It will also likely be labeled with its name.
4.2 periodic river = intermittent river
- On a topographic map, an intermittent river may be represented by a dashed blue line to indicate that it only has water during certain periods or seasons. It may also be labeled with its name and information regarding its intermittent flow.
Give another term for each of the following and show how they would appear on a topographic
4.1 permanent river
4.2 periodic river
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