Feasibility study for the Change of the Surface Irrigation to New Methods Irrigation in the Karkhe & Karoun Basins Irrigation and Drainage Minor Networks

Narrative Description of Project

In this study is investigated change of the irrigation methods in among Karkhe & Karoun basin irrigation & drainage networks in the Khouzestan & Ilam provinces. The coverage area of irrigation & drainage networks is about 51130 ha. The objective of study is using optimum from water resources with the change of irrigation methods (such as, pressurized & Low pressure).
The area of location is included 7 plains in the names of Dashte abbas, Evan, Dosalogh, Arayez, Azadegan, Chamran & Abufazel-Salamat.

Description of actual services provided by your staff within the assignment

In order to evaluation of irrigation methods in the studied area is used Multiple Criteria Decision Making (MCDM). Criteria & sub criteria are selected based on disciplines such as Soil, Agriculture, Social, Irrigation, Drainage & Economic conditions. Criteria & sub criteria are presented in the following table:

 Sub Criteria 

Main Criteria

-

Quantity of Irrigation Water

Soil texture, Sand & Gravelly, Soil depth, Salinity, Topography

Soil Characteristics

-

Energy Supply

Project Benefit , Water Economic Efficiency 

Economic Index

Water Management on farm, Water Transmission & Distribution

Labors Requirement, Costs

O & M Situations

Chemical, Physical, Biological

Quality of Irrigation Water

Development of the society, Social Integrity, Regional Tendencies, Ownership System

Social

Drainage Coefficient, Quality & Quantity drain water

Drainage Problems

Temperature, Wind speed

Climate status

-

Technology

Coverage Area, Crops, Crop rotation, Cropping pattern, Water Requirement

Agriculture

 


According to the analysis, prioritization of options were fulfillment witch results are shown in the following table:

       The final Prioritization of options

Area (ha)

Name of plain

3

2

1

S

LP

P

10000

Dashte Abbas-U1

S

LP

P

Dashte Abbas-U2

S

LP

P

Dashte Abbas-U3

S

LP

P

Dashte Abbas-U4

S

LP

P

Dashte Abbas-U5

S

LP

P

6800

Dosalogh-U1

S

LP

P

Dosalogh-U2

S

LP

P

Dosalogh-U3

S

LP

P

Dosalogh-U4

S

LP

P

2500

Ev