CIV E 634 - SURFACE WATER HYDROLOGY
SPRING 2011
HOMEWORK 3:   OVERLAND FLOW

  1. Calculate and plot the Horton solution for overland flow (Eq. 4-36) for t/te varying between 0 and 1, at intervals of 0.1.

  2. In Horton's solution, what is the t/te corresponding to q/qe = 0.99? What is the t/te corresponding to q/qe = 0.999?

  3. Given the following overland flow conditions: i = 36 mm/hr, n = 0.1, So = 0.01, and L = 90 m. Calculate the equilibrium outflow qe (L/s/m) and the time-to-equilibrium te (sec) by Horton's method (m = 2).

  4. For the data in Prob. 3, what is the discharge q (L/s/m) when t = te?