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Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Types of Air Masses and Fronts

If the surface is warm and moist, air in the region becomes warm and moist also. If the air then moves to different regions it takes these properties along, gradually changing in response to the new area. Air masses are designated as cold or warm and moist or dry. It is a boundary between two air masses. The term has its origins analog to military operations as the

Types of Precipitation Formation Processes

Although moisture is always present in the atmosphere but it is condensed only when air is cooled and saturated with some water vapors. Usually mechanism by which air is cooled to cause precipitation is the lifting of air mass. Based on lifting of air carrying vapors, precipitation is classified as follows: Cyclonic precipitation Convective precipitation Orographic precipitation

Sources of Error in Measuring Precipitation

Some water is used to wet the surface of instrument. The rain recorded may be less than the actual rainfall due to the direction of the rainfall as affected by wind. Dents in the collector and tube may also cause error.

Types of Precipitation Based on Lifting Mechanism

Although moisture is always present in the atmosphere but it is condensed only when air is cooled and saturated with some water vapors. Usually mechanism by which air is cooled to cause precipitation is the lifting of air mass. Precipitation is often classified according to the factor responsible for lifting of air to higher altitudes. Following are the various types of

Clear Water Scour Scouring in Hydraulic Structures

Local scour is the Erosion occurring over a region of limited extent due to local flow conditions, such as may be caused by the presence of hydraulic structures. Scour is the result of the erosive action of flowing water excavating and carrying away material from the bed and banks of streams. Potential scour can be a significant factor in the analysis of a stream crossing system.

Clear Water Scour Scouring in Hydraulic Structures

Local scour is the Erosion occurring over a region of limited extent due to local flow conditions, such as may be caused by the presence of hydraulic structures. Scour is the result of the erosive action of flowing water excavating and carrying away material from the bed and banks of streams. Potential scour can be a significant factor in the analysis of a stream crossing system.

Factors Affecting Precipitation Formation

Following are the factors mainly responsible for the formation of precipitation....A lifting mechanism to produce cooling of the air. A mechanism to produce condensation of water vapors and formation of cloud droplets. A mechanism to produce growth of cloud droplets to size capable of falling to the ground against the lifting force of air. When air ascends from near the

Engineering Hydrology Class Lectures and Notes

Engineering Hydrology Helps in the following ways: Hydrology is used to find out maximum probable flood at proposed sites e.g.. Dams. The variation of water production from catchments can be calculated and described by hydrology.

History And Origin of Hydrology

It was along the Indus in Pakistan, the Tigris and Euphrates in Mesopotamia, the Hwang Ho in China, and the Nile in Egypt that the first hydraulic engineers created canals, levees, dams, subsurface water conduits, and wells as early as 5000-6000 years ago.
By Haseeb Jamal - Mar 13, 2017

Evaporation in Engineering Hydrology

It is defined as the transfer of liquid water into vapor state to the atmosphere. It involves the conversion of water from liquid to vapor state and then again return to the atmosphere in the form of liquid or solid precipitation that reaches the earth surface.
By Haseeb Jamal - Mar 05, 2017

Methods of Measurement of Evaporation

The rate of evaporation is defined as the amount of water evaporated from a unit surface area per unit of time. It can be expressed as the mass or volume of liquid water evaporated per area in unit of time, usually as the equivalent depth of liquid water evaporated per unit of time from the whole area.

Precipitation And Factors Affecting Precipitation

It is defined as the fall of moisture from the atmosphere to the earth surface in any physical form. Usually precipitation is in two forms: Liquid - rainfall Solid Precipitation

Applications of Hydrology in Civil Engineering

In hydrology we apply scientific knowledge and mathematical principles to solve water-related problems in society: problems of quantity, quality and availability. Mathematical models of all Hydrological phenomena are made.

How Precipitation Occurs

Precipitation takes place when a body of moisture cools sufficiently for it to become saturated in water droplets and ice crystals, upon condensation. Air may be cooled in a number of ways i.e. By meeting of air masses of different temperature. By coming into contact with a cold object such as ground (mountains). The most important mechanism is uplift of air, as air

How to Measure Rainfall / Precipitation

All the forms of precipitation are measure on the basis of vertical depth of water that would accumulate on a level surface of precipitation remained where it fell. In metric system precipitation is measure in millimeters and tenths. Any open receptacle with vertical side can be used as a gauges for measuring rainfall. These refined receptacles with vertical side can be

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