It is a valley.
the bottom
Height of an object = (elevation of its top) - (elevation of its bottom)
Top Elevation: 3115 Ft. Bottom Elevation: 2415 Ft.Vertical Drop: 700 Ft.
Not quite. The invert elevation of a pipe is measured at the flow line which is the bottom inside of the pipe. The bottom of pipe elevation should be the bottom outside of the pipe. The difference betwen the two measurements is the thickness of the pipe wall.
Gravity
center
google earth displays elevation based on where the cursor is. elevation is displayed in the bottom left after longitude and latitude. lowercase 'elev' X.
On the bottom of the windage / elevation housing.
it is the elevation at the bottom of the inside of a pipe (as if there was a drop of water sitting at the bottom) which typically dumps out of a culvert, or spillway
The hilly area at the bottom of mountains is known as a foothill region. Foothills are transitional zones between the mountains and the surrounding lower lands. They typically have a gentle slope and are ecologically rich areas.
2,000 ft and more it's bottom and rises to 4,000 ft to the Red River.
They are a rolling stone.