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Consumptive Use of Water
What is Consumptive Use of Water
and Factors Affecting it
By: Haseeb Jamal
Definition:
It is the quantity of water used by the vegetation growth
of a given area.
It is the amount of water required by a crop for its
vegetated growth to evapotranspiration and building of plant tissues plus
evaporation from soils and intercepted precipitation.
It is expressed in terms of depth of water.
Consumptive use varies with temperature, humidity, wind
speed, topography, sunlight hours, method of irrigation, moisture availability.
Mathematically,
Consumptive Use = Evapotranspiration = Evaporation + transpiration.
It is expressed in terms of depth of water.
Factors Affecting the Consumptive Use
of Water
Consumptive use of water varies with:
1.
Evaporation which
depends on humidity
2.
Mean Monthly
temperature
3.
Growing season of
crops and cropping pattern
4.
Monthly
precipitation in area
5.
Wind velocity in
locality
6.
Soil and topography
7.
Irrigation
practices and method of irrigation
8.
Sunlight hours
Types of Consumptive Water Use
Following are the types of consumptive use,
1. Optimum Consumptive Use
2. Potential Consumptive Use
3. Seasonal Consumptive Use
1. Optimum Consumptive Use:
It
is the consumptive use which produces a maximum crop yield.
2. Potential Consumptive Use:
If
sufficient moisture is always available to completely meet the needs of
vegetation fully covering the entire area then resulting evapotranspiration is
known as Potential Consumptive Use.
3. Seasonal Consumptive Use:
The total amount of water used in the evapo-transpiration by a
cropped area during the entire growing season.
Haseeb
Jamal. I am a Civil Engineer,
graduated from University
of Engineering and Technology, Peshawar, Pakistan in 2010. I also
have a PG-Diploma in Disaster Management and
MS in Urban
Infrastructure Engineering (In Progress). My expertise include civil
related softwares like AutoCAD,
SAP2000, MS Project, Primavera, MS Office and GIS. My technical skills include
project management, monitoring and evaluation, structural assessment, disaster
risk management, Quantity survey, land survey, material testing, site
management and technical writing. I am trained in writing project progress
reports as well as proposals and concept papers. I have also received advanced
training on surveying, proposal writing, Monitoring and Evaluation of projects
as well as organizations.
I have worked as Project
Engineer at National Research and Development Foundation, Peshawar and
CENCON Associates. I also worked with Spectra Engineering Solutions as Senior
Civil Engineer in monitoring of World Bank and UNDP funded projects all
over Khyber Pakhtunkhwa and FATA. Currently, I am working as Deputy
Manager Development at NayaTel, Peshawar.
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