Nesa
Irrigation
&
Drainage
Network
&
Diversion
Dam (Narmashir)
Client:
Kerman
Regional
Water
Authority
Contractors:
Lojanak Construction & Facility Co.
Jahad
Nasr of
Kerman
Province
Location:
Narmashir
plain is
located
in
Kerman
province,
25 km
southeast
of Bam.
>>
Proper
distribution of water to irrigated land.
>>
Collection, conveyance and discharge of surface runoffs to Koly
River by constructing diversion drains and protective dykes.
General Specifications:
>
9000
hectares of irrigation network consisting of:
.
>
2700
hectares of irrigation improvement.
. >
6300
hectares of irrigation development.
>> Irrigation
Method:
>
4423
hectares irrigated by surface irrigation
>
4575
hectares irrigated by drip irrigation
>>
water supply:
>
141
mcm of irrigation water requirement is supplied from Normashi
reservoir annually.
>
40 mcm
of irrigation water is supplied from groundwater resources.
Project Components:
>>
Diversion Dam:
|
spillway |
concrete free flow ogee 119 m long |
|
Dam height from foundation |
7.2 m |
|
Flood discharge capacity |
1291 cms |
|
Length
of stilling basin |
22 m |
|
Sediment discharge sluiceway |
7.4 m wide |
|
Dikes |
50 m long on the left bank and 930 m
long on the right bank |
|
Maximum intake capacity |
8 cms |
>> Conveyance
system (main canals):
|
Length
of main canals |
16320 m |
|
Capacity |
8 cms at the beginning and 3.34 cms at
the end. |
>>
Irrigation Network:
|
Primary
canals |
23310 m |
|
Secondary canals |
38835 m |
|
Pressurized
pipelines |
25000 m |
>>
Drainage Network:
|
Diversion drains |
51000 m |
|
Main drains |
10650 m |
|
Primary & secondary drains |
46760 m |
|
385
hydraulic structures |
|
