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# Hydrology and hydrogeology

Q2. Which of the following catchment characteristics is most likely to decrease the depth of the initial losses in
the catchment?
A.
Decrease in catchment size
B.
Decrease in catchment slope
C.
Decreased urbanization
D.
Increased soil depth
E.
Strong La Nina
Q3. The shape (peakiness) of the hydrograph is usually not a function of the following:
A.
Infiltration
B.
Surface roughness
C.
Catchment slope
D.
Evaporation
E.
Directly connected impervious area
Q4. The total volume of the hydrograph is usually not a function of the following:
A.
Catchment slope
B.
Canopy interception
C.
Areal coverage of the storm
D.
Infiltration
E.
Directly connected impervious area
Q6. Which of the f
ollowing design parameters would you use to size a reservoir?
A.
Peak water level
B.
Detention time
C.
Peak flow
D.
Maximum rainfall intensity
E.
Maximum storm volume
Q7.Which option A to E below provides the best combination of alternatives (1)
â€“
(4) that complete the
following statement:
For a given catchment, as the flood magnitude increases:
(1)
The average recurrence interval increases
(2)
The exceedance probability decreases
(3)
The availability of flow data increases
(4)
The acceptable level of risk decreases
A.
(1) and (2)
B.
(1), (3) and (4)
C.
(2) and (4)
D.
(1), (2) and (4)
E.
None of the combinations given in A
D, it is another combination
Q8. Methods based on rainfall are usually preferred for estimating design flows because.
A.
Rainfall data have a higher resolution than flow data
B.
Rainfall
runoff models provide a go
od representation of catchment processes
C.
Rainfall data are easier to measure than flow data
D.
Rainfall data typically have longer records than flow data
E.
None of the above
Q9. Which option A to E below represents the best combination of factors (1)
(5) that are likely to have an
influence on the design flows for a structure?
(1)
Maximum rainfall intensity
(2)
Catchment area
(3)
Consequences of failure
(4)
Projected construction costs
(5)
Geographical region
A.
(1), (2), (3), (4) and (5)
B.
(1), (2), (3) and (4)
C.
(1), (2) and (3)
D.
(1) and (2)
E.
(1)
Q10. Flow measurement is usually done by measuring flow velocity continuously. Is this true? Please select
the option with the most appropriate reasoning.
A.
Yes, because flow velocity measurements are far more accurate than river height measurements
B.
No, because river height measurements are far more accurate than river velocity measurements
C.
No, because river height is easier to measure continuously than velocity
D.
No, because river height over weir structures is easily converted to flow usi
ng appropriate formulae
E.
None of the above
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Category: Sample Questions