North of Khuzestan
irrigation & Draniage
Network company
This company has been made in 1991 in order
to operation of modern dez irrigation networks main
purpose of made this co. is promote staff and economic activities.
Summary
of physical dimensions
Gross area
125000 hec
Net area 93750 hec
Re – regulating dam 1 structure
Diversion dam 1 structure
Minor pump stations 14 units
Major pump stations 8 units
Installed total pumps 79 set
Total water structures 4969 unit
Canals
and Construction
Main Canal capacity (West
region) 157 m3/sec
Main Canal capacity (East
region) 92 m3/sec
Main Canal capacity (Sabili
region) 13 m3/sec
Total Lengths of Main
east Canal 113.5 Km
Total Lengths of Main
west Canal 93 Km
Total Lengths of
Secondary east Canal 290 Km
Total Lengths of
Secondary west Canal 243 Km
Total Lengths of Drain
634 Km
Roads
1287 KmِTotal
Access and Repair
Total irrigation gate
1070 unit
Total Big Bridge
2 unit
The
Types Of Produce Crops and Land Classification
Quality of
Soil is suitable for Agriculture and soil classes has classified in 3 grade
(1.2.3)
All of The Land has original leaved and natural slope is one meter
per one kilometer particularly northern – southern direction.
The main
crops in this area are wheat ، corn ، sugar cane citrus ، sugar beet ،
vegetables. And on the whole all of could region crops cold be plant in
this area.
Boundaries Of Networks
Lands of
networks is enclosed by four limitations at below description
:
In the north
it is limited to the northern dezfoul downhill's and
in the east led to shoor river ( kohnak wash )in the south haft – tapeh
lands beside shahoor river and at last west limitation
continued to karkheh rivers there are three big
cities above boundaries dez and shahoor
rivers Iran all over rail road Tehran khoramshar read
also two big wash as names balarud and siahmansoor passing through networks .
Background
network
Dez irrigation network is one of the fourteenth
multipurpose design of Khuzestan development that
a long period to improve lands and the uses of
natural resource water & soil.
Contemporary building of the dez dam that built in 1958 has a site to study and design
part of irrigation network about 22000 hectares as name pilot plan had began by
development and resource consulting engineers and it was operated around the
middle of 1963.after operation and study results of the pilot plan for remain
lands about 72000 hectare net irrigable area 12 construction and
installation contracts had stared in 1966. At last finish in 1977.
Also there are six radial gates in dimension
5.39×15 meters that each gate
passing maximum peak flow 746 cubic meters per seconds
The three main rivers are under names of dez،
karkheh and shahoor causes.
This area has been more water from other
places in Iran.
The water quality is the most desirable for
irrigating lands.
Maximum temperature in hot days reaches about
51 degree centigrade and in the winter it decreased to zero degree
Average rainfall is about 350 millimeters and
rainy period is usually begin in November and be finished at may in every year
Maximum amount of evaporation in hotness day
bad reported 22 millimeters
The average of summer humidity in one day is
roughly equaled 30 percent and it is nearly 60 percent in the winter season
Specification
of water installations ?
Re – regulating dam
This dam has been constructed at 4.5
kilometers from the north of the ancient bridge in order to control and re-
regulate the released water from the reservoir dez
dam also support required water in the irrigation network on base flow 200
cubic meters per second lake widespread is about 331 hectare with volume
contain 14 millions cubic meters at the height of 135/20 above the sea level.
The length of dam is 136 m and 20 meters
high. This dam has a sluice gate for passing bed load and maximum peak flow 551
cubic meters per second.
Dimension above gate is 5.6 height × 12.8 widths
Dez
Flood
Diversion Dam
This concrete Dam designed and builds
about 6 Kilometer downstream of Re-regulating dam with 394 meter lengths and 4
meter high.
In order to direct Dez water to main
east and west canals, Also passing 6000
cubic meter per second flood of the Dez River.
Pump stations
Due to about 14000 hectares of network lands
are irrigate able by pump station so those pumps have
important rule to withdrawal water especially in sabely
sections
capacity of main sabely
pump station 16m3/s
capacity of no 1 sabeley
pump station 3.8 m3/s
capacity of no 2 sabeley
pump station 2.2 m3/s
capacity of no 3 sabeley
pump station 0.54 m3/s
capacity of no 4 sabeley
pump station 0.8 m3/s
capacity of main ghomesh
pump station 3.84 m3/s
capacity of sangar pump
station 3 m3/s
capacity of andemeshk pump
station 1.5 m3/s
