Rezaul Karim

Assistant Professor,

Environmental Science and Technology

Jessore Science and Technology University

Environmental Hydrology: Introductory Class

WELCOME

Rezaul Karim

Assistant Professor,

Dept of EST,

Jessore University of

Science and

Technology

B.Sc. & M.S. in Environmental

Science (JU)

M.Sc. In Sustainable

Technology, KTH, Sweden

Research Interest

◦ Climate Change;

◦ Sustainability;

◦ Risk Management;

◦ Energy

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Class outline

Aims

Out line of the topics: Hydrology

◦ Course contents

◦ Course materials

◦ Class test + attendance

◦ References

Summary

Outcomes of the study

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Course Number: EST 2111

Course Title: Environmental Hydrology

Credit: 2 [2 hours per week for a period

of 13 (2X13 hours) weeks]

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Aims

The class is designed to give an understanding about “Hydrology and its contents and importance” to the 2nd year student of the EST department.

therefore, they will be able to do higher courses related to water issues of their further study.

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Introduction: Hydrology

The word hydrology combines ◦ the Greek word “Hudor” which means “water” and

◦ the –logy designates “a study of.”

It is also origins in the new Latin word hydrologia.

Generally, hydrology refers to the scientific study of water and its properties, distribution, and effects on Earth’s surface, soil and atmosphere.

Different things to different professions. E.g. Chemist, planners, environmentalists & meteorologists and so on.

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Definition

Hydrology is an earth science.

It encompasses the occurrence, distribution, movement and properties of the waters of the earth.

The U.S. National Research Council (1991)

Z

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Hydrologic Cycle is the Centre

of Hydrology

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Course out line Introduction:

Hydrology: the study of water, Importance of Water, World’s water resource, A brief history of development hydrology, Major aspects of hydrology, Hydrological data, Scope of hydrology, Application of hydrology to environmental problems

Hydrologic cycle:

hydrologic cycle and its components and process; system concept, water balance, world's surface water: precipitation, evaporation and runoff, metrological parameters affecting hydrologic cycle, water shed, hydrologic equation

Precipitation and interception:

water vapor and precipitation; precipitation formation; types of precipitation, precipitation distribution; static influences on precipitation distribution; measurement of precipitation; forest rainfall measurement; point and areal precipitation; moving from point measurement to spatially distributed estimation; rain-gauge density; rainfall intensity and storm duration; surrogate measures for estimating rainfall; precipitation in the context of water quantity and quality

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Evaporation and transpiration: evaporation, evaporation as a process, evaporation from water

surfaces and soil, evaporation above a vegetation canopy: transpiration, measurement of evaporation, estimation of evaporation, remote sensing of evaporation, evaporation in the context of water quantity and quality

Storage and ground water: water beneath the earth’s surface, water in the unsaturated zone,

water in the saturated zone, aquifers and aquitards, groundwater flow, measuring water beneath the surface, measurement of infiltration rate, estimating water beneath the surface, storage in the context of water quantity and quality

Run off and flooding: types of flow, runoff mechanisms, groundwater contribution to

stormflow, measuring streamflow, measuring hillslope runoff, estimating streamflow, floods, influences on flood size, runoff in the context of water quality

Stream flow analysis and modelling : hydrograph analysis; the unit hydrograph; flow duration curves;

frequency analysis; limitations of frequency analysis; computer modelling in hydrology; flow assessment for stream ecology

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Course Number: EST 2112

Course Title: Environmental Hydrology Sessional

Credit: 1 [1 hours per week for a period of 13 (1X13 hours) weeks]

Course Content

◦ Data Analysis and Statistics

◦ Calculating Intensity, Duration, and Frequency

◦ Field infiltration tests

◦ Runoff modeling using TR55

Course Teacher:

◦ Rezaul Karim

◦ Sayka Jahan

Sciences involved

Hydrology is a broad subject.

It needs help from allied sciences such as ◦ Physics

◦ Mathematics

◦ Statistics

◦ Geology

◦ Geography

◦ Meteorology

◦ Forestry

◦ Agriculture

◦ Hydraulics

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Application fields: essential for:

Sustainable agriculture (foods for the growing population);

Environmental protection and management;

Water resources development and management;

Prevention and control of natural disasters;

Control problems of tidal rivers and estuaries;

Soil erosion and sediment transport and deposition;

Mitigation of the negative impacts of climatic change;

Water supply; and

Flood and drought control;

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Recommended references

Tim Davie (2002) Fundamentals of hydrology, Routledge Fundamentals of Physical Geography, 2nd ed. Routledge 270 Madison Avenue, New York, NY 10016

Viessman, W., Jr., and G.L. Lewis, 2003. Introduction to Hydrology, 5th Edition. Harper Collins College Publishers, New York, NY.

Raghunath, H. M. (2006) Hydrology: principles, analysis and design. 2nd ed. New age international (p) limited, New delhi - 110002

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As to sum up Hydrology is an earth science that

encompasses the occurrence, distribution, movement and properties of the waters of the earth.

The main jobs of a hydrologist are collection and analysis of data, and making predictions out of this analysis.

It requires support of other allied subjects.

The employment opportunity is diversified fields e.g. weather station, flood control department, mining and so on.

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Outcomes of the study

After the class, it is expected that one can

◦ Define the hydrology

◦ Describe its contents and important

◦ Analyze their prospects and potentials on the

field related to hydrology and

◦ Evaluate their decision when they might to

choose the course from multi-disciplinary

curriculum on their teaching or taking subsidiary

courses on their further study.

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Thank

you