STUPIDSID
1 (a)
Explain the various methods of determining average rainfall over a catchment
due to storm. Discuss relative merits and demerits of each.
7 M
1 (b)
Define unit hydrograph. Describe the procedure of deriving a unit hydrograph
from a given flood hydrograph.
7 M
2 (a) 1
Explain the following terms:
1. Precipitation.
2.Infiltration capacity.
3.Evapo-transpiration.
4.Infiltration Rate.
5.Hydrograph.
6.Floods
7.Drought.
1. Precipitation.
2.Infiltration capacity.
3.Evapo-transpiration.
4.Infiltration Rate.
5.Hydrograph.
6.Floods
7.Drought.
7 M
2 (b)
Describe in detail the factors affecting infiltration.
7 M
2 (c)
A storm with 11cm precipitation produces a direct surface runoff of 6.2 cm.
The time distribution of the storm is given in the following table.
Compute the Φ index of the storm.
| Time from start in hour | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Incremental rainfall in each hour in cm | 0.5 | 1.0 | 1.8 | 2.6 | 2.0 | 1.5 | 1.2 | 0.4 |
Compute the Φ index of the storm.
7 M
3 (a)
Define runoff, sub-surface runoff and direct runoff. Explain the factors
affecting runoff.
7 M
3 (b)
The ordinates of flood hydrograph from a 4 hour rainfall are given below.
Derive the ordinates of 4 hour unit hydrograph for a catchment area of 640 km .
| Time (hours) | 0 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 |
| Discharge m3/s | 30 | 68 | 205 | 410 | 330 | 254 | 195 | 133 | 95 | 58 | 30 |
7 M
Define the following in relation to aquifer
3 (c) 1
Confined aquifer
1 M
3 (c) 2
Unconfined aquifer.
1 M
3 (c) 3
Aquiclude
1 M
3 (c) 4
Aquifuge
1 M
3 (c) 5
Transmissibility
1 M
3 (c) 6
Storage coefficient
1 M
3 (c) 7
Specific yield
1 M
3 (d)
A 30 cm diameter well completely penetrates a confined aquifer of permeability 45 m/day. The length of strainers is 20 m. Under steady state of pumping, the drawdown at the well was found to be 3.0 m and radius of influence was 300 m. Calculate the discharge.
7 M
Write a short note on
4 (a) 1
Rational formula for flood estimation
4 M
4 (a) 2
Flood forecasting and warning
3 M
4 (b)
Explain various causes of flood and their preventive measures.
7 M
4 (c)
Explain the procedure to determine the reservoir capacity using mass curve.
7 M
Describe in brief
4 (d) 1
Reservoir sedimentation
4 M
4 (d) 2
Components of power house
3 M
Write a short note on
5 (a) 1
Causes of drought
4 M
5 (a) 2
Water conservation
3 M
5 (b)
Explain various methods of water harvesting.
7 M
5 (c)
Explain flood frequency analysis.
7 M
5 (d)
Explain functional requirements of water resources projects.
7 M
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