Topics: 1. Engineering Hydrology 2. Computation of Runoff

1. Dr. P. Rambabu, Associate Professor, BVRIT, Narsapur 1
WATER RESOURCES ENGINEERING - I
Assignment
S.
No.
Question
Blooms
Taxonomy
Level
Marks Roll No.
UNIT I – INTRODUCTION TO ENGINEEING HYDROLOGY
1
Explain with the help of sketch the hydrologic cycle in nature
indicating its various phases? And also give an account of
global water budget?
Understanding 3+2 15-162
2 List out the practical applications of hydrology Remembering 2
15-163
3 What are the types and forms of precipitation? Remembering 3
4 Explain different types of rain gauges Understanding 3 15-168
5
Explain the methods of estimating missing rainfall data at a
station in a basin.
Understanding 3 15-169
6 Define rainfall double mass curve Remembering 3 15-170
7
Explain step by step procedure you would adopt to prepare the
depth-area-duration curves for a particular storm for a basin
having a number of rain-gauges, most of which are recording.
Understanding 3 15-171
8
Explain the following in brief.
a) Isohyets
b) Rain gauge density.
Understanding 3+2 15-172
9
A basin has the area in the form of a pentagon with each side of
length 20Km. The five rain gauges located at the corners
A,B,C, D and E have recorded 60, 81,73, 59 and 45mm of
rainfall respectively. Compute average depth of rainfall over
the basin using arithmetic mean and Theissen polygon
methods.
Evaluating
5 15-175
10
The annual rainfalls at 7 rain gauge stations in a basin are 58,
94, 60, 45, 20, 88 and 68cm respectively. What is the
percentage accuracy of the existing network in the estimation
of average depth of rainfall over the basin. How many
additional gauges are required, if it is desired to limit the error
to only 10%.
Evaluating 5 15-178
11 Evaluating 5 15-180
12
There are four rain gauge stations neighboring a gauge A,
which was inoperative during a storm. The records show that
the storm rainfall for the four stations is 13.7, 14.1, 14.5, and
12.6 cm and the respective normal precipitation of the stations
are 140, 146, 157, and 122 cm. If the normal rainfall of station
A is 131 cm, cal1culate storm precipitation of station A
Evaluating 5 15-181
13 Difference between the rainfall and runoff? Understanding 3 15-185

2. Dr. P. Rambabu, Associate Professor, BVRIT, Narsapur 2
14
What is Runoff? Explain different methods of estimating
runoff?
2+3
15 Explain factors affecting Runoff 3 15-188
16
Explain the following in brief.
a) Evaporation
b) Infiltration
c) Evapotranspiration
d) Abstractions
Understanding
3+3+3
+3
15-192
17
Explain factors affecting
a) Evaporation
b) Infiltration
c) Evapotranspiration
Understanding 3+3 15-193
18 How can you measure the infiltration? Remembering 2 15-194
19 What are the types of infiltration indices? Remembering 2 15-195
20 Evaluating 5 15-196
21 Evaluating 5 15-198
22 Evaluating 5 15-199
UNIT II – RUNOFF
23 What do you mean by base flow? Understanding 3
15-1A0
24
Explain brief about
a) Hydrograph
b) Hyetograph
Understanding 3+3
25
Explain briefly about
a) S- hydrograph
b) Synthetic Unit Hydrograph
Understanding 3+3 15-1A2
26
Describe with the help of neat sketches any three methods of
separation of base flow from the hydrograph of runoff (i.e.
stream flow hydrograph) indicating the situation under which
you advocate them.
Understanding 3+2 15-1A4
27
Define Unit Hydrograph? What are the assumptions underlying
the unit hydrograph theory. How do they limit the applicability
of unit hydrograph?
Remembering,
Understanding
2+2+2 15-1A5

3. Dr. P. Rambabu, Associate Professor, BVRIT, Narsapur 3
28
What are the various components of runoff? Describe how each
component is derived in the runoff process
Remembering,
Understanding
2+3 15-1A6
29
Explain the different factors that affect the shape of the
hydrograph
Understanding 3 15-1A7
30
Describe the method of deriving unit hydrograph from complex
storms. Describe SCS method in detail.
Understanding 3+3 15-1A8
31 Evaluating 5 15-1B0
32 Creating 5 15-1B2
33 Creating 5 15-1B3
34
A drainage basin has the following characteristics. Basin area
= 2500sq.km. Length of the main stream L=110km, Distance
from the centroid of the basin to outlet = 70km. Construct the
4hour synthetic unit hydrograph for the basin if Ct = 150 and
Cp = 0.6
Creating 5 15-1B4
35 Evaluating 5 15-1B5
36 Evaluating 5 15-1B7

4. Dr. P. Rambabu, Associate Professor, BVRIT, Narsapur 4
37 Creating 5 15-1B9
38 Creating 5 LE-113
39
Explain briefly about
a) Define Maximum Probable Flood?
b) Design Flood
c) Return Period
Understanding 2+2+2 LE-116
40 Explain briefly about Flood Frequency Analysis? Understanding 3 LE-117
41
Describe the method of estimating a T-year Food using
Gumbel’s distribution. Understanding 3
LE-118,
LE-124
42 Evaluating 5 LE-119
43 Explain briefly about Flood Routing Understanding 3
LE-120,
LE-123