Problem $3$: Classify the following hydrologic phenomena according to the structure given in Figur $1\mathrm{.}4\mathrm{.}1$ as discussed in class $($deterministic$/$stochastic$,$ spatial variability, temporal variability$).$ For eac scenario below, list the category that best describes the scenario and provide a brief explanation.

a$.$ Steady uniform open channel flow $(3$pt$.)$

b$.$ Sequence of annual maxima values of discharge at a site $(3$pt$.)$

c$.$ Annual precipitation values at two gages located on opposite banks of a river $(3$pt$.)$

d$.$ The longitudinal profile of water surface elevation in a channel upstream of a weir during a storm event $(3$pt$.)$