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Not all topographic maps need a contour line that represents sea level because on some topographic maps you can analyze, that the contour line does not start on sea level. There are several reasons for this. One reason maybe that, the mountain or hill is mapped in the middle of an area and not surrounded by water. Zero meters of elevation represents sea level and if it includes 0 meters than that means that land is possibly an island. In other cases, there should be a contour line marked zero, but in some cases there are not.

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14y ago
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1h ago

No, not all topographic maps must have a contour line representing 0 meters of elevation. Some maps may start their contour lines at a different elevation, depending on the area being mapped and the geographic context.

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Q: Must all topographic maps have a contour line that represents 0 meters of elevation Explain?
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Related questions

What is a contour line map?

topographic elevation


What is the purpose of contour on topographic map?

Contour lines show elevation.


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A contour is a line that joins points of equal elevation.


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What is the contour?

the difference in elevation represented by each contour line on a topographic map


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On a topographic map the difference in elevation between one contour line and the next is the?

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What connects points of equal elevation on topographic maps?

contour lines


A what connects points of equal elevation on a topographic map?

contour lines