The following four hydrological features have to be estimated or taken as inputs before one can compute the flood hydrograph at any catchment outlet:1. Unit hydrograph2. Rainfall hydrograph3. Infiltration index4. Base flowThe correct order in which they have to be employed in the computations is

The following four hydrological features have to be estimated or taken

1.	The following four hydrological features have to be estimated or taken as inputs before one can compute the flood hydrograph at any catchment outlet:1. Unit hydrograph2. Rainfall hydrograph3. Infiltration index4. Base flowThe correct order in which they have to be employed in the computations is
A.	1, 2, 3, 4
B.	2, 1, 4, 3
C.	2, 3, 1, 4
D.	4, 1, 3, 2
Answer» D. 4, 1, 3, 2

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The following four hydrological features have to be estimated or taken as inputs before one can compute the flood hydrograph at any catchment outlet:1. Unit hydrograph2. Rainfall hydrograph3. Infiltration index4. Base flowThe correct order in which they have to be employed in the computations is

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