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Engineering Hydrology Quiz
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Engineering Hydrology Quiz

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Questions and Answers

What is the primary focus of Deterministic Hydrology?

  • Discovery of basic principles and relationships of hydrologic phenomena
  • Analysis of physical characteristics such as slope, area, and depth in a cause-and-effect sense (correct)
  • Analysis of statistical probability of occurrence of hydrologic events
  • Use of hydrology in the design and management of civil works
  • What is the main application of Scientific Hydrology?

  • Discovery of basic principles and relationships of hydrologic phenomena (correct)
  • Assessment of statistical probability of occurrence of hydrologic events
  • Planning and design of water resources engineering projects
  • Gathering data pertaining to the occurrence and distribution of water
  • What type of hydrology is concerned with the use of hydrology in the design and management of civil works?

  • Applied Hydrology (correct)
  • Stochastic Hydrology
  • Scientific Hydrology
  • Deterministic Hydrology
  • What is the term for a person who studies hydrologic phenomena and gathers data pertaining to the occurrence and distribution of water?

    <p>Hydrologist</p> Signup and view all the answers

    What type of hydrology deals with the analysis of statistical probability of occurrence of hydrologic events?

    <p>Stochastic Hydrology</p> Signup and view all the answers

    What is the primary purpose of hydrological investigations in water resources engineering projects?

    <p>To properly assess the different factors affecting the project</p> Signup and view all the answers

    What is the primary purpose of hydrological investigations and assessment?

    <p>To determine the capacity of storage structures and magnitude of flood flows</p> Signup and view all the answers

    What can happen if the minimum flow and quantity of flow available at various seasons are not considered?

    <p>Failure of bridges and culverts</p> Signup and view all the answers

    What is the term used to describe the total loss of moisture content from the bodies of water, earth's surface, plants, etc.?

    <p>Evapotranspiration</p> Signup and view all the answers

    What is the collective term used to denote moisture in the liquid form that falls from the atmosphere to the surface of the earth?

    <p>Precipitation</p> Signup and view all the answers

    What is the maximum size of a raindrop?

    <p>6 mm</p> Signup and view all the answers

    What is the term used to describe precipitation in the form of water droplets sizes larger than 0.5 mm?

    <p>Rainfall</p> Signup and view all the answers

    What is essential for the formation of precipitation?

    <p>Moisture in the atmosphere, sufficient nuclei present, and good weather condition</p> Signup and view all the answers

    What is the term used to describe a fine sprinkle of numerous water droplets of sizes less than 0.5 mm and intensity less than 1 mm/hr?

    <p>Drizzle</p> Signup and view all the answers

    Study Notes

    Engineering Hydrology

    • Engineering Hydrology encompasses the planning, design, and operation of engineering projects for the control and use of water, involving aspects of occurrence, circulation, and distribution of water.

    Branches of Hydrology

    • Scientific Hydrology: discovers basic principles and relationships.
    • Deterministic Hydrology: analyzes physical characteristics like slope, area, and depth in a cause-and-effect sense.
    • Stochastic Hydrology: considers statistical probability of occurrence of events like peak floods.
    • Applied Hydrology: applies hydrology to design and manage civil works, including studying hydrology of major storms, flood surface drainage, and water supply and irrigation.

    Application of Hydrology to Engineering

    • Hydrological investigations are necessary for water resources engineering projects, including:
      • Irrigation
      • Water Supply
      • Flood control
      • Reservoir
      • Water power
      • Navigation
    • Factors requiring hydrological investigations and assessment:
      • Capacity of storage structures like reservoirs
      • Magnitude of flood flows
      • Minimum flow and quantity of flow available at various seasons
      • Interaction of flood wave and hydraulic structures

    Importance of Hydrological Investigations

    • Prevents failures of important projects due to:
      • Inadequate spillway capacity
      • Excessive flow
      • Overestimation of streamflow

    Relevant Data Required by a Hydrologist

    • Weather records (temperature, humidity, wind velocity)
    • Precipitation data
    • Streamflow records
    • Evaporation and transpiration data
    • Infiltration characteristics of the area
    • Groundwater characteristics
    • Physical and geological characteristics of the area

    Hydrologic Cycle

    • Continuous process involving evaporation, precipitation, and run-off.
    • Water circulates through three main routes:
      • Evaporation and transpiration
      • Precipitation
      • Run-off

    Components of Hydrologic Cycle

    • Evaporation: loss of moisture from bodies of water and the earth's surface to the atmosphere.
    • Transpiration: loss of moisture from plants to the atmosphere.
    • Evapotranspiration: total loss of moisture content from bodies of water, earth's surface, plants, etc.
    • Run-off: excess rainfall accumulated at the earth's surface.
    • Precipitation: collective term for moisture in liquid form falling from the atmosphere to the earth's surface.

    Factors Needed for Precipitation

    • Moisture in the atmosphere
    • Sufficient nuclei for condensation
    • Good weather conditions for condensation
    • Product of condensation must reach the earth

    Forms of Precipitation

    • Rain: principal form of precipitation in the Philippines, with drop sizes larger than 0.5 mm.
    • Drizzle: fine sprinkle of numerous water droplets with sizes less than 0.5 mm and intensity less than 1 mm/hr.
    • Shower: precipitation with a higher intensity than drizzle.

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    Description

    Test your knowledge of engineering hydrology, the science that deals with the control and use of water in engineering projects, including its occurrence, circulation, and distribution.

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