Hydrology and Runoff

In Snyder's synthetic unit hydrograph method, the basin lag $t_p$ is expressed as:

Options:

• (A) $t_p = C_t (L \cdot L_c)^{0.3}$
• (B) $t_p = C_t (L / L_c)^{0.5}$
• (C) $t_p = C_t \sqrt{A}$
• (D) $t_p = C_t L^{0.77}$