CEE634-SURFACE WATER HYDROLOGY
SPRING 2001
HOMEWORK NO. 1
- Derive Eq. 4-36 in the book, i.e., Horton's solution for overland flow.
- Express Horton's solution such that q/qe
is the independent variable
and t/te is the dependent variable.
- Using the equation derived in 2, calculate and plot Horton's solution
at intervals of 0.01 q/qe from 0.00 to 0.99, then 0.999
q/qe
and 0.9999 q/qe.
- 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 and the time to
equilibrium te.
- Using the data of item 4 and the equation derived in item 2, calculate how
long will it take for
the outflow discharge from the overland flow plane to attain
50, 90, 99, 99.9, and 99.99 percent
of its equilibrium value.
Assigned: February 6, 2001
Due: February 15, 2001
Late: February 22, 2001.
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