Instructions:
- All questions carry equal marks.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer from any seven of the following:
Which of the following recording rain gauges does not produce the mass curve of precipitation as record?
Depth-area-duration curve of precipitation is drawn as
An isohyet is a line joining point having
Main annual runoff of from a catchment of area represents an effective rainfall of
An area is classified as a drought-prone area if the probability P of occurrence of a drought is
The average pan coefficient for a standard US weather bureau class A pan is
The chemical that is found to be most suitable as water evaporation inhibitor is
A unit hydrograph has one unit of
The surface joining the static water levels in several wells penetrating a confined aquifer represents
The dimension of the coefficient of transmissibility T is
Q.2 Solve both questions:
Discuss the hydrological water budget with the aid of examples. What are the significant features of global water-balance studies?
A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges is as follows:
Q.3 Solve both questions:
What are the different methods of recording of rainfall?
Assuming the initial infiltration rate of , final infiltration rate of $ 5 ,, mm/h $ and the constant value (describing the rate of decay of the difference between the initial and final infiltration rates) as , calculate the total infiltration depth for the storm lasting 6 h.
Q.4 Solve both questions:
Define infiltration capacity. Discuss the factors affecting the infiltration capacity of an area.
Following observations were made for conducting the water budget of a reservoir over a period of one month of 30 days: Average surface area Rainfall Mean surface inflow rate = 10 \,\, m^3/s $; mean surface outflow rate = 15 ,, m^3/s $ Fall of reservoir level = 1.50 \,\, m $; pan evaporation = 20 ,, cm $ Assume pan evaporation coefficient . Estimate the average seepage discharge during the month.
Q.5 Solve this question:
Describe briefly the surface water resources in India.
Q.6 Solve both questions:
What is meant by 75% dependable yield of a catchment? Indicate a procedure to estimate the same by using annual runoff volume time series.
For a catchment in Bihar, India, the mean monthly temperatures are given:
Q.7 Solve both questions:
Describe the S-curve method of developing a 6 h unit hydrograph by using 12 h unit hydrograph of the catchment.
Given below are observed flows from a storm of 6 h duration on a stream with a catchment area of :
Q.8 Solve both questions:
Distinguish between the following: (i) Aquifer and Aquitard (ii) Unconfined aquifer and a Leaky aquifer (iii) Water table and Piezometric surface
A well is located in a 25 m confined aquifer of permeability 30 m/day and storage coefficient 0.005. If the well is being pumped at a rate of 1750 lpm, calculate the drawdown at a distance of (i) 100 m and (ii) 50 m from the well after 20 hour of pumping.
Q.9 Write short notes on any four of the following:
Instructions:
- All questions carry equal marks.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer from any seven of the following:
Which of the following recording rain gauges does not produce the mass curve of precipitation as record?
Depth-area-duration curve of precipitation is drawn as
An isohyet is a line joining point having
Main annual runoff of from a catchment of area represents an effective rainfall of
An area is classified as a drought-prone area if the probability P of occurrence of a drought is
The average pan coefficient for a standard US weather bureau class A pan is
The chemical that is found to be most suitable as water evaporation inhibitor is
A unit hydrograph has one unit of
The surface joining the static water levels in several wells penetrating a confined aquifer represents
The dimension of the coefficient of transmissibility T is
Q.2 Solve both questions:
Discuss the hydrological water budget with the aid of examples. What are the significant features of global water-balance studies?
A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges is as follows:
Q.3 Solve both questions:
What are the different methods of recording of rainfall?
Assuming the initial infiltration rate of , final infiltration rate of $ 5 ,, mm/h $ and the constant value (describing the rate of decay of the difference between the initial and final infiltration rates) as , calculate the total infiltration depth for the storm lasting 6 h.
Q.4 Solve both questions:
Define infiltration capacity. Discuss the factors affecting the infiltration capacity of an area.
Following observations were made for conducting the water budget of a reservoir over a period of
one month of 30 days:
Average surface area $ = 10 ,, km^2 $
Rainfall $ = 10 ,, cm $
Mean surface inflow rate = 10 \,\, m^3/s $; mean surface outflow rate = 15 ,,
m^3/s
$
Fall of reservoir level = 1.50 \,\, m $; pan evaporation = 20 ,, cm $
Assume pan evaporation coefficient .
Estimate the average seepage discharge during the month.
Q.5 Solve this question:
Describe briefly the surface water resources in India.
Q.6 Solve both questions:
What is meant by 75% dependable yield of a catchment? Indicate a procedure to estimate the same by using annual runoff volume time series.
For a catchment in Bihar, India, the mean monthly temperatures are given:
Q.7 Solve both questions:
Describe the S-curve method of developing a 6 h unit hydrograph by using 12 h unit hydrograph of the catchment.
Given below are observed flows from a storm of 6 h duration on a stream with a catchment area of :
Q.8 Solve both questions:
Distinguish between the following:
(i) Aquifer and Aquitard
(ii) Unconfined aquifer and a Leaky aquifer
(iii) Water table and Piezometric surface
A well is located in a 25 m confined aquifer of permeability 30 m/day and storage coefficient 0.005. If the well is being pumped at a rate of 1750 lpm, calculate the drawdown at a distance of (i) 100 m and (ii) 50 m from the well after 20 hour of pumping.
Q.9 Write short notes on any four of the following:
Instructions:
- All questions carry equal marks.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer from any seven of the following:
Which of the following recording rain gauges does not produce the mass curve of precipitation as record?
Depth-area-duration curve of precipitation is drawn as
An isohyet is a line joining point having
Main annual runoff of from a catchment of area represents an effective rainfall of
An area is classified as a drought-prone area if the probability P of occurrence of a drought is
The average pan coefficient for a standard US weather bureau class A pan is
The chemical that is found to be most suitable as water evaporation inhibitor is
A unit hydrograph has one unit of
The surface joining the static water levels in several wells penetrating a confined aquifer represents
The dimension of the coefficient of transmissibility T is
Q.2 Solve both questions:
Discuss the hydrological water budget with the aid of examples. What are the significant features of global water-balance studies?
A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges is as follows:
Q.3 Solve both questions:
What are the different methods of recording of rainfall?
Assuming the initial infiltration rate of , final infiltration rate of $ 5 ,, mm/h $ and the constant value (describing the rate of decay of the difference between the initial and final infiltration rates) as , calculate the total infiltration depth for the storm lasting 6 h.
Q.4 Solve both questions:
Define infiltration capacity. Discuss the factors affecting the infiltration capacity of an area.
Following observations were made for conducting the water budget of a reservoir over a period of
one month of 30 days:
Average surface area $ = 10 ,, km^2 $
Rainfall $ = 10 ,, cm $
Mean surface inflow rate = 10 \,\, m^3/s $; mean surface outflow rate = 15 ,,
m^3/s
$
Fall of reservoir level = 1.50 \,\, m $; pan evaporation = 20 ,, cm $
Assume pan evaporation coefficient .
Estimate the average seepage discharge during the month.
Q.5 Solve this question:
Describe briefly the surface water resources in India.
Q.6 Solve both questions:
What is meant by 75% dependable yield of a catchment? Indicate a procedure to estimate the same by using annual runoff volume time series.
For a catchment in Bihar, India, the mean monthly temperatures are given:
Q.7 Solve both questions:
Describe the S-curve method of developing a 6 h unit hydrograph by using 12 h unit hydrograph of the catchment.
Given below are observed flows from a storm of 6 h duration on a stream with a catchment area of :
Q.8 Solve both questions:
Distinguish between the following:
(i) Aquifer and Aquitard
(ii) Unconfined aquifer and a Leaky aquifer
(iii) Water table and Piezometric surface
A well is located in a 25 m confined aquifer of permeability 30 m/day and storage coefficient 0.005. If the well is being pumped at a rate of 1750 lpm, calculate the drawdown at a distance of (i) 100 m and (ii) 50 m from the well after 20 hour of pumping.
Q.9 Write short notes on any four of the following:
Instructions:
- All questions carry equal marks.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer from any seven of the following:
Which of the following recording rain gauges does not produce the mass curve of precipitation as record?
Depth-area-duration curve of precipitation is drawn as
An isohyet is a line joining point having
Main annual runoff of $ 1 \,\, m^3/s $ from a catchment of area $ 31.54 \,\, km^2 $ represents an effective rainfall of
An area is classified as a drought-prone area if the probability P of occurrence of a drought is
The average pan coefficient for a standard US weather bureau class A pan is
The chemical that is found to be most suitable as water evaporation inhibitor is
A unit hydrograph has one unit of
The surface joining the static water levels in several wells penetrating a confined aquifer represents
The dimension of the coefficient of transmissibility T is
Q.2 Solve both questions:
Discuss the hydrological water budget with the aid of examples. What are the significant features of global water-balance studies?
A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges is as follows:
| Station | P | Q | R | S | T | U | V |
|---|---|---|---|---|---|---|---|
| Rainfall (cm) | 135.0 | 142.1 | 122.2 | 108.5 | 165.2 | 102.1 | 146.9 |
(i) Determine the standard error in the estimation in mean rainfall in the existing set of rain
gauges.
(ii) For a 5% error in the estimation of the mean rainfall, calculate the minimum
number of additional rain gauge stations to be established in the catchment.
Q.3 Solve both questions:
What are the different methods of recording of rainfall?
Assuming the initial infiltration rate of $ 10 \,\, mm/h $, final infiltration rate of $ 5 \,\, mm/h $ and the constant value (describing the rate of decay of the difference between the initial and final infiltration rates) as $ 0.95 \,\, h^{-1} $, calculate the total infiltration depth for the storm lasting 6 h.
Q.4 Solve both questions:
Define infiltration capacity. Discuss the factors affecting the infiltration capacity of an area.
Following observations were made for conducting the water budget of a reservoir over a period of
one month of 30 days:
Average surface area $ = 10 \,\, km^2 $
Rainfall $ = 10 \,\, cm $
Mean surface inflow rate $ = 10 \,\, m^3/s $; mean surface outflow rate $ = 15 \,\,
m^3/s
$
Fall of reservoir level $ = 1.50 \,\, m $; pan evaporation $ = 20 \,\, cm $
Assume pan evaporation coefficient $ = 0.70 $.
Estimate the average seepage discharge during the month.
Q.5 Solve this question:
Describe briefly the surface water resources in India.
Q.6 Solve both questions:
What is meant by 75% dependable yield of a catchment? Indicate a procedure to estimate the same by using annual runoff volume time series.
For a catchment in Bihar, India, the mean monthly temperatures are given:
| Month | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Temp (°C) | 10 | 16 | 22 | 27 | 34 | 41 |
| Rainfall $ (P_m)[cm] $ | 5 | 3 | 2 | 0 | 3 | 15 |
| Month | Jul | Aug | Sep | Oct | Nov | Dec |
| Temp (°C) | 39 | 35 | 30 | 27 | 17 | 11 |
| Rainfall $ (P_m)[cm] $ | 35 | 38 | 24 | 2 | 0 | 2 |
Estimate the annual runoff and annual runoff coefficient by Khosla's method.
Q.7 Solve both questions:
Describe the S-curve method of developing a 6 h unit hydrograph by using 12 h unit hydrograph of the catchment.
Given below are observed flows from a storm of 6 h duration on a stream with a catchment area of $ 500 \,\, km^2 $:
| Time (h) | 0 | 6 | 12 | 18 | 24 | 30 | 36 |
|---|---|---|---|---|---|---|---|
| Observed flow $ (m^3/s) $ | 0 | 100 | 250 | 200 | 150 | 100 | 70 |
| Time (h) | 42 | 48 | 54 | 60 | 66 | 72 | |
| Observed flow $ (m^3/s) $ | 50 | 35 | 25 | 15 | 5 | 0 |
Assuming the base flow to be zero, derive the ordinates of the 6 h unit hydrograph.
Q.8 Solve both questions:
Distinguish between the following:
(i) Aquifer and Aquitard
(ii) Unconfined aquifer and a Leaky aquifer
(iii) Water table and Piezometric surface
A well is located in a 25 m confined aquifer of permeability 30 m/day and storage coefficient 0.005. If the well is being pumped at a rate of 1750 lpm, calculate the drawdown at a distance of (i) 100 m and (ii) 50 m from the well after 20 hour of pumping.
Q.9 Write short notes on any four of the following:
Instructions:
- All questions carry equal marks.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer from any seven of the following:
Which of the following recording rain gauges does not produce the mass curve of precipitation as record?
Depth-area-duration curve of precipitation is drawn as
An isohyet is a line joining point having
Main annual runoff of $ 1 \,\, m^3/s $ from a catchment of area $ 31.54 \,\, km^2 $ represents an effective rainfall of
An area is classified as a drought-prone area if the probability P of occurrence of a drought is
The average pan coefficient for a standard US weather bureau class A pan is
The chemical that is found to be most suitable as water evaporation inhibitor is
A unit hydrograph has one unit of
The surface joining the static water levels in several wells penetrating a confined aquifer represents
The dimension of the coefficient of transmissibility T is
Q.2 Solve both questions:
Discuss the hydrological water budget with the aid of examples. What are the significant features of global water-balance studies?
A catchment area has seven rain gauge stations. In a year, the annual rainfall recorded by the gauges is as follows:
| Station | P | Q | R | S | T | U | V |
|---|---|---|---|---|---|---|---|
| Rainfall (cm) | 135.0 | 142.1 | 122.2 | 108.5 | 165.2 | 102.1 | 146.9 |
(i) Determine the standard error in the estimation in mean rainfall in the existing set of rain
gauges.
(ii) For a 5% error in the estimation of the mean rainfall, calculate the minimum
number of additional rain gauge stations to be established in the catchment.
Q.3 Solve both questions:
What are the different methods of recording of rainfall?
Assuming the initial infiltration rate of $ 10 \,\, mm/h $, final infiltration rate of $ 5 \,\, mm/h $ and the constant value (describing the rate of decay of the difference between the initial and final infiltration rates) as $ 0.95 \,\, h^{-1} $, calculate the total infiltration depth for the storm lasting 6 h.
Q.4 Solve both questions:
Define infiltration capacity. Discuss the factors affecting the infiltration capacity of an area.
Following observations were made for conducting the water budget of a reservoir over a period of
one month of 30 days:
Average surface area $ = 10 \,\, km^2 $
Rainfall $ = 10 \,\, cm $
Mean surface inflow rate $ = 10 \,\, m^3/s $; mean surface outflow rate $ = 15 \,\,
m^3/s
$
Fall of reservoir level $ = 1.50 \,\, m $; pan evaporation $ = 20 \,\, cm $
Assume pan evaporation coefficient $ = 0.70 $.
Estimate the average seepage discharge during the month.
Q.5 Solve this question:
Describe briefly the surface water resources in India.
Q.6 Solve both questions:
What is meant by 75% dependable yield of a catchment? Indicate a procedure to estimate the same by using annual runoff volume time series.
For a catchment in Bihar, India, the mean monthly temperatures are given:
| Month | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Temp (°C) | 10 | 16 | 22 | 27 | 34 | 41 |
| Rainfall $ (P_m)[cm] $ | 5 | 3 | 2 | 0 | 3 | 15 |
| Month | Jul | Aug | Sep | Oct | Nov | Dec |
| Temp (°C) | 39 | 35 | 30 | 27 | 17 | 11 |
| Rainfall $ (P_m)[cm] $ | 35 | 38 | 24 | 2 | 0 | 2 |
Estimate the annual runoff and annual runoff coefficient by Khosla's method.
Q.7 Solve both questions:
Describe the S-curve method of developing a 6 h unit hydrograph by using 12 h unit hydrograph of the catchment.
Given below are observed flows from a storm of 6 h duration on a stream with a catchment area of $ 500 \,\, km^2 $:
| Time (h) | 0 | 6 | 12 | 18 | 24 | 30 | 36 |
|---|---|---|---|---|---|---|---|
| Observed flow $ (m^3/s) $ | 0 | 100 | 250 | 200 | 150 | 100 | 70 |
| Time (h) | 42 | 48 | 54 | 60 | 66 | 72 | |
| Observed flow $ (m^3/s) $ | 50 | 35 | 25 | 15 | 5 | 0 |
Assuming the base flow to be zero, derive the ordinates of the 6 h unit hydrograph.
Q.8 Solve both questions:
Distinguish between the following:
(i) Aquifer and Aquitard
(ii) Unconfined aquifer and a Leaky aquifer
(iii) Water table and Piezometric surface
A well is located in a 25 m confined aquifer of permeability 30 m/day and storage coefficient 0.005. If the well is being pumped at a rate of 1750 lpm, calculate the drawdown at a distance of (i) 100 m and (ii) 50 m from the well after 20 hour of pumping.