Hydrologic floodplain, the land adjacent to the baseflow channel residing below bankfull elevation. It is inundated about two years out of three. Not every stream corridor has a hydrologic floodplain.
Topographic floodplain, the land adjacent to the channel including the hydrologic floodplain and other lands up to an elevation based on the elevation reached by a flood peak of a given frequency; for example, the 1-percent (100 year) floodplain.
Another way to look at it, in an incising channel, that is to say that the river is cutting into valley, will create two floodplain benches, the lower and narrow one the hydrologic floodplain and the higher and much wider one the topographical floodplain.
Topographic maps are used to show elevation on land, and bathymetric maps are used to show depth in bodies of water.
contour lines
mt st helens is 3-d, topographic map is 2-d. a topographic map can probably fit on your desk, but mt st helens may not
Total relief is the difference in elevation between the highest and lowest points on the map.
A topographical map shows elevations. They are more useful than other types of maps when looking for information about landforms, their locations, and their heights.
By observation of the relative altitudes of the land mapped, a watershed area may then be intuited by the larger distance between lay lines.
Contour interval
Contour interval
Contour interval
Topographic maps are used to show elevation on land, and bathymetric maps are used to show depth in bodies of water.
It would be the difference between the two darker lines, or index lines, and then divide the space in between with your difference.
contour lines
mt st helens is 3-d, topographic map is 2-d. a topographic map can probably fit on your desk, but mt st helens may not
The relief is the difference between the highest and lowest contour line.
Total relief is the difference in elevation between the highest and lowest points on the map.
The difference in elevation between two side-by-side contour lines on a topographic map is called the contour interval. It represents the vertical distance between each contour line and helps depict the steepness of the terrain.
A topographical map shows elevations. They are more useful than other types of maps when looking for information about landforms, their locations, and their heights.