An isohyet is a line on a map that shows where the same amount of rain or water has fallen, like a line that shows where the rain has filled up to the same level
Step-by-step explanation:
metaAI
To draw the depth-area-duration curve for the basin, we can use the data provided in the problem. The depth-area-duration curve shows the relationship between the depth of runoff, the area of the basin, and the duration of the storm.
First, we need to plot the data points on a graph, where the x-axis represents the duration of the storm (in hours), the y-axis represents the area of the basin (in km²), and the z-axis represents the depth of runoff (in mm).
The data points are:
* 2 hours, 100 km², 20 mm
* 4 hours, 250 km², 30 mm
* 6 hours, 450 km², 40 mm
* 8 hours, 650 km², 50 mm
Next, we can connect the data points to create the depth-area-duration curve. This curve shows how the depth of runoff increases as the area of the basin increases and the duration of the storm increases.
The resulting curve will have the shape of a bell-shaped curve, with the maximum depth of runoff occurring at the intersection of the curves for the 4-hour and 6-hour storm durations.