Final answer:
The calculated discharge is 199.8 m³/s.
Step-by-step explanation:
To calculate the discharge of a stream, we can use the equation:
Q = A * v
Where:
- Q is the discharge in cubic meters per second
- A is the cross-sectional area of the stream in square meters
- v is the average velocity of the stream in meters per second
In this case, the width and depth of the stream are given, so we can calculate the cross-sectional area:
A = width * depth
Substituting the given values:
A = 12.0 m * 15.0 m = 180.0 m²
Finally, substituting the area and velocity into the discharge equation:
Q = 180.0 m² * 1.11 m/s = 199.8 m³/s