Which one is incorrect about assumptions made that are inherent to the unit hydrograph: Rainfall excesses of equal duration are assumed to produce hydrographs with equivalent time bases regardless of the intensity of the rain. O The time distribution of direct runoff is assumed to dependent on antecedent precipitation. Rainfall distribution is assumed to be the same for all storms of equal duration, both spatially and temporally. O Direct runoff ordinates for a storm of a given duration are assumed to be directly proportional to rainfall excess volumes. Thus, twice the rainfall produces a doubling of hydrograph ordinates.
Which one is incorrect about assumptions made that are inherent to the unit hydrograph: Rainfall excesses of equal duration are assumed to produce hydrographs with equivalent time bases regardless of the intensity of the rain. O The time distribution of direct runoff is assumed to dependent on antecedent precipitation. Rainfall distribution is assumed to be the same for all storms of equal duration, both spatially and temporally. O Direct runoff ordinates for a storm of a given duration are assumed to be directly proportional to rainfall excess volumes. Thus, twice the rainfall produces a doubling of hydrograph ordinates.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Which one is incorrect about assumptions
made that are inherent to the unit
hydrograph:
O Rainfall excesses of equal duration are assumed
to produce hydrographs with equivalent time
bases regardless of the intensity of the rain.
O The time distribution of direct runoff is
assumed to dependent on antecedent
precipitation.
Rainfall distribution is assumed to be the same
for all storms of equal duration, both spatially
and temporally.
O Direct runoff ordinates for a storm of a given
duration are assumed to be directly
proportional to rainfall excess volumes. Thus,
twice the rainfall produces a doubling of
hydrograph ordinates.
Expert Solution
Step 1
Given Data :
● Assumptions made that are inherent to the unit hydrograph:
TO Determine:
Wrong assumption/ wrong option
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