Hydrology & Water Resources Engineering — Summer 2022

Explain the hydrological cycle with neat sketch.

Enlist types of dams based on their function. Explain any one in brief

Discuss the various methods of determining the average depth of rainfall over a catchment.

List out the various methods used to calculate the average depth of rainfall over a catchment and explain any one with neat sketch.

Describe the various factors affecting run-off from a basin area.

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 Km2. Time 0 4 8 12 16 20 24 28 32 36 40 (Hours) Discharge 30 68 205 410 330 254 195 133 95 58 30 m3/sec

The ordinates of 3 hour unit hydrograph are given below : Time 0 3 6 9 12 15 18 21 24 27 30 (Hours) Ordinates 0 10 25 20 16 12 9 7 5 3 0 cumecs Find the ordinates of a 6 hour unit hydrograph for the same basin, analytically. Also sketch this unit hydrograph. What is the peak value of discharge in this unit hydrograph ?

Give the difference between Specific Yield and Specific Retention for ground water.

Describe how to obtain the unit hydrograph from a flood hydrograph resulting from a storm of certain duration.

Design a tube well for the following data: 1. Yield required = 0.081 Cumec. 2. Thickness of confined aquifer = 30 m. 3. Radius of circle of influence = 300 m 4. Permeability co-efficient = 60 m/day. 5. Drawdown = 5.1 m.

Explain the terms with suitable example: Aquifuge, Aquiclude, Aquitard.

A 30 Cm diameter will completely penetrates a confined aquifer of permeability of 45 m/day. The length of strainer is 20 m. Under steady state of pumping, the draw down at the well was found to be 3.0 m and radius of influence was 300m. Calculate the discharge.

Give difference between: (I) Hyetograph and Direct runoff hydrograph, (II) Unit hydrograph and S-Hydrograph.

Explain causes of flood.

Give difference between Penstocks and Turbines.

Explain briefly all components of a hydroelectric power plant with neat sketch.

Write down the different methods available for Flood estimation and explain any one method.

Write a short note: Methods for Separation of Base flow.

Define the following with figure (1) Earthen dam (2) Gravity dam (3) Arch dam (4) Buttress dam (5) Spillway

Give difference between hydrological drought and meteorological drought.

Write the short note on Levees and Flood walls.

Explain theoretical probability distribution Gumbel’s method.

Discuss the factors affecting infiltration.

Write short note on flood forecasting and warning.

Describe the Flood routing with neat sketch.