CC BY
3
Nabiev D.Z.
Artikova F. Ya.
Dovulov N.L.
Specialized school of the Agency of Presidential Educational Institutions in Urgut District, Samarkand Region National University of Uzbekistan named after Mirzo Ulugbek
LARGE IRRIGATION IN ZARAFSHON BASIN CHANNEL
INDICATORS
Annotation: The article is devoted to the study of indicators of large irrigation canals in the Zaravshan basin. The large irrigation canals receiving water from the Zarafshan river serve to increase the hydrological importance of the irrigated lands.
Keywords: water consumption, river, river basin, water flow, hydrological regime, canal, canal length, canal permeability, irrigated lands.
The waters of the Zarafshan River have been used for a wide range of purposes in all areas of human economic activity since ancient times. In order to develop the deserts of Uzbekistan, large irrigation canals fed by the waters of the Zarafshan River were built, and the river's waters have been effectively used for thousands of years. Examples of such large canals are New Dargom, Round Dargom, Old Dargom, Narpay, Old Anhor, Old Tuya-Tortar canals. Currently, when it is necessary to use water resources effectively and rationally, determining the morphometric and hydrological indicators of channels, studying the water regime, is one of the urgent issues. The main goal of this research work is to study the morphometric and hydrological parameters of the large irrigation canals in the Zarafshan basin, and the large irrigation canals in the Zarafshan basin were selected as the research object. The research subject of the work is to study the current main morphometric indicators and hydrological regime of large irrigation canals receiving water from the Zarafshan River. The large irrigation canals receiving water from the Zarafshan River are controlled by the Regional Department of the Ministry of Water Management of the Republic of Uzbekistan, the Department of the Use of the Zarafshan Main System of the Samarkand Region. The following table provides information on the main morphometric and hydrological parameters of the large irrigation canals receiving water from the Zarafshan River. The New Dargom canal is the largest of them, its water carrying capacity is 125 m3/s (Table 1.1).
Table 1.1
Large irrigation canals that ^ receive water from the Zarafshon River
№ Channels Location, district Main inc icators
L, km Qmax, m3/s
1 New Dargom Urgut 5,2 125
2 New Dargom, filler Urgut 3,5 40
3 Old Dargham Urgut 3,7 60
4 New Dargom Toyloq 5,1 60
5 Old Dargham Toyloq 5 58
6 Right bank Bulung'ir 2,2 125
7 Right bank, filler Bulung'ir 0,8 10
8 Old Tuyatortar Bulung'ir 1,5 45
Note: L is channel length; Qmax is the water carrying capacity of the channel.
Dargom Irrigation Network Administration (ITB) supplies Zarafshan water to Urgut, Toyloq, Samarkand, Pastdargom, Nurabad, Kattakurgan districts and Samarkand city of Samarkand region. The length of the canals included in this system varies between 3.22 (Jaghalboyli) and 51.6 (New n/s) kilometers. The maximum water transfer varies between 15.48 m3/s (Urgutsoy) and 0.3 m3/s (Kavarzor).
Table 1.2
The main indicators of the channels under the control of Dargom ITB
Channels Location, district Main indicators
L, km Qmax, m3/s F, 103 ga
New Urgut Urgut 36,4 25 18,396
New Urgut Samarkand 27,6 15 7,747
Urgutsoy Urgut 10 15,5 0.205
A new pump brings water to the station Urgut 51,6 15.0 0.972
Shaudar TaänoK 7 10 3,091
Anhor Pastdargom 41.95 25.0 11.800
Anhor highway Pastdargom 13 18 1,420
Progress Pastdargom 30 8.0 4.680
Honchorbog highway Pastdargom 10,75 24 1,439
0 KPC Pastdargom 46.3 20 10,274
1 Videl-4 Pastdargom 2,83 3.5 1.362
2 MR-1 Pastdargom 17,5 5.0 0.198
3 MR-2 Pastdargom 2,61 3.0 0.269
4 Younger Pastdargom 10,5 4.0 0.055
Note: L is channel length; Qmax - channel water carrying capacity, F -irrigated area.
The old Anhor irrigation systems provide Zarafshan water to Pastdargom, Nurabad, Kashkadarya region of Samarkand region, Chirakchi district of Kashkadarya region, and partly to Qamashi and Shahrisabz districts.
This system includes the Old Anhor canal itself and the Sandal, Kumdarya, Dovur and Arabbandi canals that receive water from it.
Table 1.3
Indicators of old Ankhor ITB channels
№ Channels Located place, district Main indicators
L, km Qmax, m3/s F, 103 ga
1 Old Anhor Pastdargom 15,1 60 2,199
2 Old Anhor straight 16,0 57 3,123
3 Old Anhor straight 17,6 60 -
4 Old Anhor A lamp 48,3 50 8,868
5 Sandal A lamp 5,1 30 3,190
6 Qumdaryo A lamp 17,9 40 0,754
7 Dovur A lamp 16 10 3,576
8 Arabbandi A lamp 27,0 10 5,820
Note: L is channel length; Qmax - channel water carrying capacity, F -irrigated area.
The main task of the Tuyatortar-Qiyli irrigation systems is to supply Zarafshan water to Jizzakh city, Jizzakh, Bakhmal, Gallaorol districts of Jizzakh region. The largest water flow that can be transferred by the canals under the jurisdiction of this ITB is 60 m3/s, and their length varies between values of 23.9 km.
Table 1.4
Indicators of Tuyatortar-Qyili ITB channels
№ Channels Location place, district Main indicators
L, km Qmax, m3/s F, 103 ga
1 Right Bank Jizzakh 3,4 60 2,076
2 Palace head Jizzakh 1,8 15 2,680
3 Head of Iran Jizzakh 19,2 10 2,380
4 Old Tuyatortar Gallaorol 12,1 45 6,683
5 Sangzar, betonli Gallaorol 23,9 30 0,715
6 O'ng qirg'oq Jizzakh 2,0 60 0,004
7 JSO, chiqish Jizzakh 12,8 15 4,984
8 JSO, chiqish Jizzakh 8,4 50 0,910
9 QSO, chiqish Gallaorol 4,7 50 1,520
Note: L is the length of the channel; Qmax is the maximum water consumption that the channel can carry; F - irrigated area.
Right bank Narpai-Navoi irrigation systems supply Zarafshan river water to Narpai, Pakhtachi, Kattakurgan, Karmana districts and Navoi city of Samarkand region. The Narpay canal takes the main place in providing this system with Zarafshan water, and all irrigation water arteries receive water from this canal, and more than 50,000 hectares of cultivated land in Samarkand and Navoi regions are irrigated.
Table 1.5
Indicators of Narpay-Navoi ITB channels
№ Channels Location place, district Main indicators
L, km Qmax, m3/s F, 103 ga
1 Narpai-Navoi Kattakurgan 20,6 90 3,086
2 Chig'anoq Kattakurgan 9,0 20 0,903
3 Narpai Narpai 33,2 70 16,811
4 Car Narpai 15,19 12 4,213
5 Don't turn Hamza Narpai 4,02 20
6 Narpai Pakhtachi 43,2 50 22,456
7 LB-1 (left bank) Pakhtachi 33,5 20 1,495
8 Narpai Karmana 9,7 10 4,970
Note: L-channel length; Qmax - water permeability; F - irrigated area.
In short, at present, the water resources of the rivers are effectively used with the help of irrigation systems in the Zarafshan basin, Amudare waters also contribute to meeting the water requirements of the oasis, and the needs of the national economy are fully provided.
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2. Hikmatov F.H., Haydarov S.A., and others. Hydrometeorological conditions and water resources of the Zarafshan river basin. -Tashkent.: «Science and technology », 2016. - 276 p.
3. Yunusov G'.Kh., Hikmatov F.H., and others.. Technologies for ensuring operational reliability of irrigation canals and improving their efficiency (Monograph). -Tashkent: "Science and Technology Publishing House", 2020. -164 p.
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