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ENCE 354Bachelor in Civil Engineering · Semester 61 Paper Available

Irrigation and Drainage Engineering

Past examination question papers and complete curriculum syllabus for Irrigation and Drainage Engineering (ENCE 354), Bachelor in Civil Engineering Semester 6 under Institute of Engineering (IOE), Tribhuvan University.

Sem 6 Subjects (6)View Full Semester Overview →
ENCE 351Estimating and CostingENCE 352Design of RCC StructuresENCE 353Transportation Engineering IIENCE 354Irrigation and Drainage EngineeringENCE 355Professional and Social EngineeringENCE 365-389Elective I
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6th-sem_Irrigation and Drainage Engineering.pdf

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Most Frequently Asked Questions

Top recurring IOE board exam questions for Irrigation and Drainage Engineering with verified mark schemes, formula notation, and recurrence frequency.

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Year-wise & Session-wise Exam Papers

Complete questions from each exam session (Regular & Back exams from 2082 to 2069) for Irrigation and Drainage Engineering. Click any session paper to expand.

Showing 122 questions across 18 exam session papers
Institute of Engineering • 2082 Chaitra Board Examination
Q1[5 Marks]Introduction
Write the different methods of surface and sub-surface irrigation and explain about drip irrigation with its' suitability.
Q2[8 Marks]Irrigation Water Requirements and Water Availability
The transplantation of rice usually takes two weeks and of water required is in the field. Due to rain about demand is fulfilled. Taking losses from the distributary head to water course head and losses in water course, compute (a) Duty of water at the head of the water course. (b) Duty of water at the head of distributary.
Q3[5 Marks]Canal Irrigation System and Design of Canals
Derive the balancing depth for a canal. Calculate the balancing depth for a canal section having a bed width equal to and side slopes of in cutting and in filling. The bank embankments are kept higher than the ground level (berm) and crest width of banks is kept as .
Q4[8 Marks]Canal Irrigation System and Design of Canals
A stable channel is to be designed for a discharge of 40 and the silt factor of unity. Calculate the dimensions of the channel using Lacey’s regime equations. What would be the bed-width of this channel if it were to be designed on the basis of Kennedy’s method with critical velocity ratio equal to unity and the ratio of bed-width to depth of flow the same as obtained from Lacey’s method.
Q5[8 Marks]River Training Works
Design the length, radius of curved head, length and thickness of launching apron of a guide bund to train a river with the following data. Design flood discharge = ; bed level of river = ; HFL=; average diameter of river bed material = . Provide designed sketches.
Q6[4 Marks]Canal Regulating Structures
a) Design crest, length and thickness of impervious floor of a vertical drop structure for the following data: [8] Discharge = , Bed level U/S = Side slope of the channel = , Bed slope D/S = FSL U/S = , Bed width U/S and D/S = Top width of crest = (for initial assumption) ; Sp. Gr. of masonry drop structure = ; Bligh's Coefficient = . b) What do you understand about the head regulator and cross regulator? State the importance of outlets and escape structures in the irrigation canal.
Q7[4 Marks]Cross-Drainage Structures
a) Following data are obtained at the crossing of a canal and a drainage. [6] Canal data: , depth of water and , Bed width , side slope Drainage data: , , Bed level and Ground level Design the following components of siphon aqueduct. i) Drainage waterway ii) Canal waterway iii) Transition iv) Uplift b) Explain different types of cross-drainage structure with necessary sketch.
Q8[5 Marks]Waterlogging and Drainage
List out the main causes and preventive measures of water logging. Determine the size of a circular tile drain, draining of a drainage area, if the drainage coefficient is and the tile grade is . Assume the rugosity coefficient for the tile material as .
Q9[8 Marks]Canal Regulating Structures
a) Design crest, length and thickness of impervious floor of a vertical drop structure for the following data: [8] Discharge = , Bed level U/S = Side slope of the channel = , Bed slope D/S = FSL U/S = , Bed width U/S and D/S = Top width of crest = (for initial assumption) ; Sp. Gr. of masonry drop structure = ; Bligh's Coefficient = . b) What do you understand about the head regulator and cross regulator? State the importance of outlets and escape structures in the irrigation canal.

Curriculum Syllabus & Course Topics

Sourced from TU curriculum portal
Full Syllabus (PDF)
Chapter-wise Units & Micro-Syllabus Topics (8 Units)

  1. 1. Introduction

    • 1.1Definition, need and advantages of irrigation and drainage
    • 1.2Disadvantages of over irrigation and waterlogging
    • 1.3Status, need and challenges of irrigation development in Nepal
    • 1.4Crops, their seasons and periods, cropping pattern and intensity
    • 1.5Commanded areas and irrigation intensity
    • 1.6Methods of field irrigation and their suitability
    • 1.7Planning of irrigation and drainage projects

  2. 2. Irrigation Water Requirements and Water Availability

    • 2.1Relation between duty, delta and crop periods
    • 2.2Crop water requirements by Penman’s method
    • 2.3Operational water requirements; Losses due to seepage and evaporation
    • 2.4Effective rainfall
    • 2.5Irrigation efficiencies and irrigation water requirements
    • 2.6Soil-moisture-irrigation relation
    • 2.7Depth and frequency of irrigation
    • 2.8Design discharges for canals
    • 2.9Water available at source compared to irrigation requirement

  3. 3. Canal Irrigation System and Design of Canals

    • 3.1Classification of canals
    • 3.2Components of a canal irrigation system
    • 3.3Alignment of canals
    • 3.4Canal standards and balancing canal depth
    • 3.5Canal distribution system and methods of water distribution
    • 3.6Sediment transport in canals and tractive force approach of canal design
    • 3.7Design of non-alluvial stable canals
    • 3.8Silt theories and design of alluvial canals by Lacey and Kennedy
    • 3.9Design of lined canals with economic analysis

  4. 4. Diversion Headworks

    • 4.1River stages and suitable location of headworks
    • 4.2Component parts of weir/barrage (Detail drawing)
    • 4.3Bligh’s, Lane’s and Khosla’s seepage theories for foundation
    • 4.4Design of weir and barrage with sloping glacies (Crest, length and thickness of impervious floor)
    • 4.5Design of under sluice and silt excluder
    • 4.6Design of head regulator (Crest, length and thickness of impervious floor)
    • 4.7Design considerations of settling basin and silt ejector

  5. 5. River Training Works

    • 5.1River characteristics and need of river training
    • 5.2Classification and methods of river training
    • 5.3Design of guide bund and launching apron
    • 5.4Spurs (Types and design considerations)
    • 5.5Flood control (Structural and non-structural methods)

  6. 6. Canal Regulating Structures

    • 6.1Alignment of the off-taking channels
    • 6.2Function of head and cross regulators, outlets, drops and escapes
    • 6.3Design of regulators and escapes (Crest, length and thickness of impervious floor)
    • 6.4Types of outlet; Design of pipe outlet (Free and submerged)
    • 6.5Types of drop; Design of vertical drop (Crest, length and thickness of impervious floor)

  7. 7. Cross-Drainage Structures

    • 7.1Need of cross-drainage works
    • 7.2Types and selection of cross-drainage structures with sketch
    • 7.3Design of siphon aqueduct (Detail drawing, drainage waterway and barrel, canal waterway and transition, RCC aqueduct, length and thickness of impervious floor, protection works)

  8. 8. Waterlogging and Drainage

    • 8.1Causes and effects of waterlogging
    • 8.2Symptoms of waterlogging and their detection
    • 8.3Preventive and remedial measures of waterlogging in irrigated land
    • 8.4Drainage of irrigated field and land reclamation
    • 8.5Surface drainage systems and their design
    • 8.5.1Layout planning of drainage and types of surface drains
    • 8.5.2Internal drainage of bunded fields (Drain design discharge)
    • 8.5.3External drainage of lands from flooding
    • 8.5.4Design of surface drains (water level, maximum and minimum slopes and cross section)
    • 8.5.5Remodeling of existing natural drains
    • 8.6Subsurface drainage systems and their design
    • 8.6.1Layout of subsurface drainage system
    • 8.6.2Flow of ground water to drains and spacing of tile drains
    • 8.6.3Economic diameter of tile drains

Examination Scheme & Marks Distribution

Evaluation Structure

  • Final Board Theory Exam: 60 Marks (Pass mark: 24)
  • Internal Assessment: 40 Marks (Pass mark: 16)
  • Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)

* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.

Exam Preparation Guidelines

  • Review the available past examination paper to understand question styling, typical derivation topics, and marks allocation.
  • Cross-reference key answers with official syllabus units, standard textbooks, and lecture notes.
  • Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.
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