Watershed Morphometry

Stream frequency $F_s$ of a watershed of area $A$ having total number of stream segments $N_s$ is defined as:

Options:

• (A) $F_s = \frac{N_s}{A}$
• (B) $F_s = \frac{A}{N_s}$
• (C) $F_s = \frac{N_s}{\sum L}$
• (D) $F_s = N_s \cdot A$