Trying to figure this out and can't:
The elevation of a streambed is surveyed near a bridge to be 2,367m. At another bridge 12.2km downstream the elevation is 2,232m. What is the gradient of this stream?
To find the gradient of the stream, we need to determine the change in elevation per unit of horizontal distance. In this case, the horizontal distance is given as 12.2 km (or 12,200 meters), and the change in elevation is 2,367m - 2,232m = 135m.
The formula for gradient is:
Gradient = Change in Elevation / Horizontal Distance
Substituting the given values into the formula:
Gradient = 135m / 12,200m
Now we can calculate the gradient:
Gradient = 135 / 12,200 ≈ 0.01107
Therefore, the gradient of this stream is approximately 0.01107.