2. Surface Water

Hydrograph Analysis — Quiz

Test your understanding of hydrograph analysis with 5 practice questions.

Practice Questions

Question 1

In event analysis of a storm hydrograph, which parameter directly quantifies the watershed’s responsiveness to rainfall intensity?

Question 2

The principle of superposition in unit hydrograph theory relies on the assumption that the watershed response is:

Question 3

For a hydrograph recession limb described by $Q=Q_{0}e^{-kt}$, if $Q_{0}=50\;\mathrm{m^{3}/s}$ and $Q=20\;\mathrm{m^{3}/s}$ at $t=3\;\mathrm{h}$, what is the recession constant $k$ (in $\mathrm{h^{-1}}$)?

Question 4

Which hydrograph separation method isolates baseflow by fitting an exponential function to the observed recession limb?

Question 5

A 2-hour unit hydrograph has a peak of $80\;\mathrm{m^{3}/s}$ for $1\;\mathrm{cm}$ of excess rainfall. If a storm delivers $4\;\mathrm{cm}$ of excess rainfall over 2 h, what is the peak direct runoff?