Introduction to Flood Hydrograph and DRH

Q. Hydrograph is a graphical representation of

1. Runoff vs Time
2. Surface runoff vs Time
3. Ground water flow vs Time
4. Rainfall vs Time

Q. An isochrone is a line on the map

1. joining rainguage stations having equal rainfall duration
2. joining points having equal rainfall depth in a given time interval
3. joining points having equal time of travel of surface runoff to the catchment outlet.
4. joining points which are at equal distance from the catchment outlet.

Q. Match List-I with List-II and select the correct answer using the codes given below the lists.

$\begin{array}{cc}\text{LIST-I}& \text{LIST-II}\\ \text{A. Rainfall intensity}& \text{1. Isohyets}\\ \text{B. Rainfall excess}& \text{2. Cumulative rainfall}\\ \text{C. Rainfall averaging}& \text{3. Hyetograph}\\ \text{D. Mass curve}& \text{4. Direct runoff hydrograph}\end{array}$

1. A	B	C	D
   1	3	2	4

2. A	B	C	D
   3	4	1	2

3. A	B	C	D
   1	2	4	3

4. A	B	C	D
   3	4	2	1