Your search found 24 records
1 Vyshpolski, F.; Mukhamedjanov, K.; Bekbaev, U.; Qadir, Manzoor; Karimov, Akmal. 2006. Application of phosphogypsum to reclaim sodic soils in Southern Kazakhstan. In Russian. Bulletin of Agricultural Science, Kazakhstan, pp.37-40.
(Location: IWMI-HQ Call no: IWMI 631.4 G772 Record No: H039612)
2 Vyshpolsky, F. F.; Mukhamedjanov, K.; Bekbaev, U.; Qadir, Manzoor; Karimov, Akmal. 2006. Application of phosphogypsum for the amelioration of sealed soils of Southern Kazakhstan. Bulletin of Agricultural Sciences of Kazakhstan, 3:37-40.
(Location: IWMI-HQ Call no: IWMI 631.4 G772 VYS Record No: H039758)
3 Vyshpolsky, F.; Qadir, Manzoor; Karimov, Akmal; Mukhamedjanov, K.; Bekbaev, U.; Paroda, R.; Aw-Hassan, A.; Karajeh, F. 2008. Enhancing the productivity of high-magnesium soil and water resources in Central Asia through the application of phosphogypsum. Land Degradation and Development, 19: 45–56.
Soil degradation ; Soil amendments ; Soil properties ; Soil salinity ; Water quality ; Cotton ; Yields ; Irrigation scheduling ; Economic analysis / Kazakhstan
(Location: IWMI HQ Call no: IWMI 631.4 G772 VYS Record No: H040596)
Recent evidences from some irrigated areas worldwide, such as Central Asia, suggest that water used for irrigation contains magnesium (Mg2þ) at levels higher than calcium (Ca2þ). Excess levels of Mg2þ in irrigation water and/or in soil, in combination with sodium (Naþ) or alone, result in soil degradation because of Mg2þ effects on the soil’s physical properties. More than 30 per cent of irrigated lands in Southern Kazakhstan having excess levels of Mg2þ are characterized by low infiltration rates and hydraulic conductivities. The consequence has been a gradual decline in the yield of cotton (Gossypium hirsutum L.), which is commonly grown in the region. These soils require adequate quantities of Ca2þ to mitigate the effects of excess Mg2þ. As a source of Ca2þ, phosphogypsum—a byproduct of the phosphorous fertilizer industry—is available in some parts of Central Asia. In participation with the local farming community, we carried out a 4-year field experiment in Southern Kazakhstan to evaluate the effects of soil application of phosphogypsum—0, 4_5, and 8_0 metric ton per hectare (t ha_1)—on chemical changes in a soil containing excess levels of Mg2þ, and on cotton yield and economics. The canal water had Mg2þ to Ca2þ ratio ranging from 1_30 to 1_66 during irrigation period. The application of phosphogypsum increased Ca2þ concentration in the soil and triggered the replacement of excess Mg2þ from the cation exchange complex. After harvesting the first crop, there was 18 per cent decrease in exchangeable magnesium percentage (EMP) of the surface 0_2m soil over the pre- experiment EMP level in the plots where phosphogypsum was applied at 4_5 t ha_1, and a 31 per cent decrease in EMP in plots treated with phosphogypsum at 8 t ha_1. Additional beneficial effect of the amendment was an increase in the soil phosphorus content. The 4-year average cotton yields were 2_6 t ha_1 with 8 t ha_1 phosphogypsum, 2_4 t ha_1 with 4_5 t ha_1 phosphogypsum, and 1_4 t ha_1 with the control. Since the amendment was applied once at the beginning, exchangeable Mg2þ levels tended to increase 4 years after its application, particularly in the treatment with 4_5 tha_1 phosphogypsum. Thus, there would be a need for phosphogypsum application to such soils after every 4–5 years to optimize the ionic balance and sustain higher levels of cotton production. The economic benefits from the phosphogypsum treatments were almost twice those from the control.
4 Kazbekov, Jusipbek; Anarbekov, Oyture; Manthrithilake, Herath; Jumabaev, Kakhramon; Tashmatov, Alisher; Mosin, Konstantin; Yusupova, Ikbal; Gunchinmaa, Tumur; Karimov, Akmal; Sabirova, Diloram. 2007. The Regional Knowledge Fair on Integrated Water Resources Management in Central Asia, Kyrgyz. National Drama Theater, Osh city, Kyrgyz Republic, 7-8 September, 2007. Report of a Knowledge fair organized by IWMI and Scientific Information Center of the Interstate Commission for Water Coordination in Central Asia (SIC-ICWC). Funded by the Swiss Agency for Development and Cooperation (SDC) 41p.
Water use efficiency ; Social participation ; Canals ; Productivity ; Water user associations ; Institutional development ; Conferences ; Exhibitions ; Farmers ; Irrigation management / Central Asia / Uzbekistan / Tajikistan / Kyrgyzstan / Ferghana
(Location: IWMI HQ Call no: IWMI 631.7.3 G782 KAZ Record No: H040653)
(0.48 MB)
5 Vyshpolsky, F.; Bekbaev, U.; Mukhamedjanov, K.; Ibatullin, S.; Paroda, R.; Yuldashev, T.; Karimov, Akmal; Aw-Hassan, A.; Noble, Andrew; Qadir, Manzoor. 2007. Enhancing the productivity of high-magnesium soil and water resources. IWMI leading BS Project output, 4p.
Magnesium ; Soil properties ; Soil reclamation ; Cotton ; Wheat ; Water use efficiency / Central Asia / Kazakhstan
(Location: IWMI HQ Call no: IWMI 631.4 G772 VYS Record No: H040657)
(1.28 MB)
6 Karimov, Akmal; Noble, Andrew; Kurbantaev, R.; Solieva, N. 2008. Stability of soil aggregates in Arys Turkestan Canal Command Zone. Paper presented at the International Conference on Agro-technologies for Soil and Water Conservation in Uzbekistan, Uzbek Research Institute of Cotton Growing, Tashkent, Uzbekistan, 5 December 2008. 14p.
Soil structural units ; Soil properties ; Soil sampling ; Saline soils ; Irrigated soils / Kazakhstan / Turkestan Canal Command Zone
(Location: IWMI HQ Call no: e-copy only Record No: H041910)
(0.17 MB)
7 Karimov, Akmal; Turral, Hugh; Mavlonov, A.; Rahmatov, N.; Manthrithilake, Herath; Borisov, V.; Anzelm, K. 2008. Regulating winter flow of Syrdarya River in aquifers of Ferghana Valley. In Russian. Water Resources of Kazakhstan, 2:17-26.
(Location: IWMI HQ Call no: e-copy only Record No: H041942)
(0.38 MB)
8 Karimov, Akmal; Mavlonov, A.; Turral, Hugh; Manthrithilake, Herath; Borisov, V.; Rahmatov N.; Jumanov, J.; Ivanov, Y. 2008. The problem of regulating winter flow of Syrdarya River and groundwater management in Fergana Valley. In Russian. In Proceedings of conference, Current Quantity and Quality of Groundwater of Uzbekistan: Issues and Solutions, held at the Hydrogeology and Engineering Geology Institute, Tashkent, Uzbekistan, 19-20 June 2008. Tashkent, Uzbekistan: Institute of Hydrogeology and Engineering Geology. pp.15-18.
(Location: IWMI HQ Call no: e-copy only Record No: H041938)
(0.26 MB)
9 Karimov, Akmal; Qadir, Manzoor; Noble, Andrew; Vyshpolsky, F.; Anzelm, K. 2009. Development of magnesium-dominant soils under irrigated agriculture in southern Kazakhstan. Pedosphere, 19(3):331-343.
Irrigation practices ; Irrigation effects ; Water quality ; Soil properties ; Groundwater ; Drainage ; Leaching ; Tube wells ; Irrigation canals ; Sodic soils ; Soil degradation / Kazakhstan / Arys Turkestan Canal command area
(Location: IWMI HQ Call no: e-copy only Record No: H041939)
(0.31 MB)
10 Qadir, Manzoor; Noble, Andrew; Qureshi, Asad Sarwar; Gupta, R. K.; Yuldashev, T.; Karimov, Akmal. 2009. Salt-induced land and water degradation in the Aral Sea basin: a challenge to sustainable agriculture in Central Asia. Natural Resources Forum, 33:134-149.
Water resources ; River basins ; Groundwater ; Soil salinity ; Soil degradation ; Soil improvement ; Soil reclamation ; Fertilizer application ; Waterlogging ; Water quality ; Saline water ; Irrigation water ; Subsurface drainage ; Trees ; Evapotranspiration ; Pumps ; Land degradation ; Farming systems ; Rice / Central Asia / Kyrgyzstan / Tajikistan / Kazakhstan / Turkmenistan / Uzbekistan / Aral Sea / Amu-Darya Basin / Syr-Darya Basin
(Location: IWMI HQ Call no: e-copy only Record No: H042212)
(0.49 MB)
Expansion of irrigated agriculture in the Aral Sea Basin in the second half of the twentieth century led to the conversion of vast tracks of virgin land into productive agricultural systems resulting in significant increases in employment opportunities and income generation. The positive effects of the development of irrigated agriculture were replete with serious environmental implications. Excessive use of irrigation water coupled with inadequate drainage systems has caused largescale land degradation and water quality deterioration in downstream parts of the basin, which is fed by two main rivers, the Amu-Darya and Syr-Darya. Recent estimates suggest that more than 50% of irrigated soils are salt-affected and/or waterlogged in Central Asia. Considering the availability of natural and human resources in the Aral Sea Basin as well as the recent research addressing soil and water management, there is cause for cautious optimism. Research-based interventions that have shown significant promise in addressing this impasse include: (1) rehabilitation of abandoned salt-affected lands through halophytic plant species; (2) introduction of 35-day-old early maturing rice varieties to withstand ambient soil and irrigation water salinity; (3) productivity enhancement of high-magnesium soils and water resources through calcium-based soil amendments; (4) use of certain tree species as biological pumps to lower elevated groundwater levels in waterlogged areas; (5) optimal use of fertilizers, particularly those supplying nitrogen, to mitigate the adverse effects of soil and irrigation water salinity; (6) mulching of furrows under saline conditions to reduce evaporation and salinity buildup in the root zone; and (7) establishment of multipurpose tree and shrub species for biomass and renewable energy production. Because of water withdrawals for agriculture from two main transboundary rivers in the Aral Sea Basin, there would be a need for policy level interventions conducive for enhancing interstate cooperation to transform salt-affected soil and saline water resources from an environmental and productivity constraint into an economic asset.
11 Karimov, Akmal; Mavlonov, A.; Smakhtin, Vladimir; Turral, Hugh; Inna, G. 2009. Groundwater development in Fergana Valley: the adaptation strategy for changed water management in Syrdarya basin. In Bloschl, G.; van de Giesen, N.; Muralidharan, D.; Ren, L.; Seyler, F.; Sharma, U.; Vrba, J. (Eds.). Improving integrated surface and groundwater resources management in a vulnerable and changing world: proceedings of Symposium JS.3 at the Joint Convention of the International Association of Hydrological Sciences (IAHS) and the International Association of Hydrogeologists (IAH), Hyderabad, India, 6-12 September 2009. Wallingford, UK: International Association of Hydrological Sciences (IAHS). 6p. (IAHS Publication 330)
Groundwater irrigation ; Aquifers ; Simulation models ; Groundwater recharge ; Conjunctive use ; Canals ; River basin management ; Hydrology ; Water budget / Central Asia / Fergana Valley / Syr Darya River Basin / Toktogul Reservoir / Sokh Aquifer
(Location: IWMI HQ Call no: e-copy only Record No: H042314)
(0.38 MB)
During the last decade, the competition for water between the hydropower-oriented upstream and irrigated agriculture-centred downstream in the Syrdarya River basin, Central Asia, has significantly increased. Since 1993, 2–3 km3 of winter flows from hydropower generation in the upstream have flowed annually into the saline depression of Arnasai located in the midstream. This results in much less water being available for irrigation during summer. Groundwater development modelling conducted for one of the Fergana Valley’s aquifers suggests that temporary storage of winter flows in the aquifer – “water banking” – could be an effective adaptive strategy to optimize water management in the basin. The study concludes that a shift from canal to groundwater irrigation, combined with winter-flow banking can effectively reduce the upstream–downstream pressures and ensure improved water supply for downstream water uses during summer time.
12 Gracheva, I.; Karimov, Akmal; Turral, Hugh; Miryusupov, F. 2009. An assessment of the potential and impacts of winter water banking in the Sokh aquifer, Central Asia. Hydrogeology Journal, 17(6):1471-1482. [doi: https://doi.org/10.1007/s10040-009-0444-0]
Groundwater recharge ; Aquifers ; Models ; Groundwater irrigation ; Artificial recharge / Central Asia / Kyrgyzstan / Syr Darya River Basin / Sokh aquifer
(Location: IWMI HQ Call no: e-copy only Record No: H042681)
(0.59 MB)
The dynamics of artificial recharge of winter surface flows coupled with increased summer groundwater use for irrigation in the Sokh aquifer (Central Asia) have been investigated. Water release patterns from the giant Toktogul reservoir have changed, as priority is now given to hydropower generation in winter in Kyrgyzstan. Winter flows have increased and summer releases have declined, but the Syr Darya River cannot pass these larger winter flows and the excess is diverted to a natural depression, creating a 40 × 109m3 lake. A water balance study of all 18 aquifers feeding the Fergana Valley indicated the feasibility of winter groundwater recharge in storage created by summer abstraction. This modeling study examines the dynamics of the process in one aquifer over a 5-year period, with four scenarios: the current situation; increased groundwater abstraction of around 625 million (M) m3/year; groundwater abstraction with an artificial recharge of 144 Mm3/year, equivalent to the volume available in low flow years in the Sokh River; and with a larger artificial recharge of 268 Mm3/year, corresponding to high flow availability. Summer surface irrigation diversions can be reduced by up to 350 Mm3 and water table levels can be lowered.
13 Karimov, Akmal; Smakhtin, Vladimir; Mavlonov, A.; Gracheva, I. 2010. Water banking in Fergana valley aquifers: a solution to water allocation in the Syrdarya river basin? Agricultural Water Management, 97(10):1461-1468. [doi: https://doi.org/10.1016/j.agwat.2010.04.01]
Aquifers ; Water storage ; Groundwater recharge ; Groundwater irrigation ; Groundwater development ; Simulation models ; River basin management ; Water power / Central Asia / Syrdarya River / Naryn River / Toktogul Reservoir / Fergana Valley / Sokh Aquifer
(Location: IWMI HQ Call no: e-copy only Record No: H043181)
(1.12 MB)
The Syrdarya river is an example of a transboundary basin with contradictory water use requirements between its upstream and downstream parts. Since the winter of 1992–93, the operational regime of the upstream Toktogul reservoir on the Naryn river – the main tributary of the Syrdarya – has shifted from irrigation to hydropower generation mode. This significantly increased winter flow and reduced summer flowdownstream of the reservoir. Consequently, excessive winterflowis diverted to the saline depression called Arnasai, while water for summer irrigation is lacking. This study suggests to store the excessive winter flows temporarily in the upstream aquifers of the Fergana valley and to use it subsequently for irrigation in summer. It is estimated that groundwater development for irrigation could be practiced on one-third of the irrigated land of the valley, and conjunctive use of groundwater and canal water on another third; the rest will remain under canal irrigation. This strategy will lower the groundwater table and create aquifer capacity for temporal storage of excessive water—“water banking”. This use of the term is only one of many concepts to which “water banking” or “groundwater banking” is applied. In this paper, the term is applied for temporary storing of river flow in subsurface aquifers. Pilot modeling studies for the Sokh aquifer – one of the 18 aquifers of the Fergana valley – supported that this strategy is a feasible solution for the upstream–downstream issues in the Syrdarya river basin. Field studies of water banking are required to determine the scale of adoption of the proposed strategy for each aquifer of the Fergana valley.
14 Karimov, Akmal; Yakubov, Murat; Noble, Andrew; Jumabaev, Kahramon; Anarbekov, Oyture; Kazbekov, Jusipbek; Mirzaev, N.; Alimdjanov, A. 2010. Alternative water allocation in Kyrgyzstan: lessons from the Lower Colorado River Basin and New South Wales. Water, 2:510-529. [doi: https://doi.org/10.3390/w2030510]
Water allocation ; Models ; River basins ; Irrigation requirements ; Reservoirs ; Case studies / Central Asia / Kyrgyzstan / Australia / USA / Lower Colorado River basin / Akbura River Basin / Texas / New South Wales
(Location: IWMI HQ Call no: e-copy only Record No: H043191)
(0.15 MB) (151.77 KB)
Focus group discussions and a modeling approach were applied to determine policy and regulatory refinements for current water allocation practices in Kyrgyzstan. Lessons from the Lower Colorado River basin, Texas and New South Wales, Australia were taken into consideration. The paper analyzes the impact of adopting some of these interventions within the socio-environmental context that currently prevails in Kyrgyzstan. The optimization model for water distribution at the river-basin scale was developed using GAMS 2.25 software. Application of the model to the Akbura River basin indicated efficiencies in the proposed institutional rules especially in low water years.
15 Karimov, Akmal; Gracheva, I.; Miryusupov, F. 2010. Modeling the managed aquifer recharge for groundwater salinity management in the Sokh River Basin. Paper presented at ISMAR7, Theme - Integrated Water Management, Abu Dhabi, UAE, 9-13 October 2010. 9p.
Aquifers ; Recharge ; Salinity ; Groundwater ; Surface water ; Conjunctive use ; Water conservation ; Irrigation water ; Drinking water ; Models ; River basins / Central Asia / Fergana Valley / Sokh River / Sokh Aquifer / Naryn River
(Location: IWMI HQ Call no: e-copy only Record No: H043327)
(1.19 MB)
The vulnerability of surface water sources in the Syrdarya River Basin, due to their transboundary nature and climatic change, raises the importance of the shift from canal irrigation to conjunctive use of surface water and groundwater. However, groundwater development for irrigation may increase salinity of water due to leaching of dissolved solids from the salt-affected vadoze zone and blending of freshwater and saline water. In this paper managed aquifer recharge and discharge are analyzed as a strategy to maintain the groundwater quality of the Sokh aquifer of the Fergana Valley located upstream of the Syrdarya River Basin. Field studies suggested that groundwater recharge from the river floodplain may contribute to maintaining good-quality water in the groundwater system. The modeling study examines groundwater salinity change over a 5-year period under different managed groundwater recharge and discharge scenarios. The modeling results show that adopting water saving technologies and increased groundwater recharge through the river floodplain allows maintaining low groundwater salinity. The studies found that developing groundwater for irrigation increases salinity in the aquifer due to downward saline water fluxes. The results indicate that managed aquifer recharge and discharge contribute to maintaining salinity levels in the vadoze zone and groundwater.
16 Karimov, Akmal; Smakhtin, Vladimir; Aulchaev, T.; Borisov, V. 2010. Transformation of a negative impact of upstream irrigation and the benefits for downstream water users: an example of Ferghana Valley. In Russian. In Proceedings of the Republican Scientific Practical Conference on Efficient Agricultural Water Use and Tropical Issues in Land Reclamation, Tashkent, Uzbekistan, 10-11 November 2010. Tashkent, Uzbekistan: Ministry of Agriculture and Water Resources; Tashkent, Uzbekistan: International Water Management Institute; Tashkent, Uzbekistan: Scientific Information Center of Interstate Commission for Water Coordination (SANIIRI). pp.129-138.
(Location: IWMI HQ Call no: e-copy only Record No: H043571)
(2.80 MB)
17 Karimov, Akmal; Molden, David; Platonov, Alexander; Khamzina, A. 2011. From improved water accounting to increased water productivity in the Fergana Valley. In ICID. 21st Congress on Irrigation and Drainage: Water Productivity towards Food Security, Tehran, Iran, 15-23 October 2011. New Delhi, India: ICID. pp.141-153. (ICID Transaction No. 30-A)
Water resources ; Water accounting ; Water productivity ; River basins ; Upstream ; Downstream ; Water depletion ; Water conservation ; Water use ; Evaporation / Central Asia / Uzbekistan / Fergana valley / Syrdarya River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044425)
http://www.irncid.org/GetFileArticles.aspx?FilePrm=8327_12461.pdf
https://vlibrary.iwmi.org/pdf/H044425.pdf
https://vlibrary.iwmi.org/pdf/H044425.pdf
(1.06 MB) (1.07MB)
Facing competition for limited water resources with domestic, industrial, hydropower and environmental uses, agriculture has to adapt to produce more food with less water. This paper proposes to apply water accounting procedure to identify the scope for water productivity improvement. The Fergana Valley, a highly productive area within the upstream of the Syrdarya River Basin, was selected to examine the proposed procedure. Significant non-productive depletions of water as evaporation at 31-34% of the available water were identified in the Fergana Valley. There is also flow to sinks and pollution in the downstream at 1-5% of the gross inflow due to the changes of the river flow regime, its quantity and quality, caused by the return flow from the irrigated land and the winter hydropower releases from the upstream. Total non-productive depletions of water at 4,200-5,200 million m3 (Mm3) were identified in the form of evaporation, flows to sinks, and pollution. Proper water saving technologies to reduce non-productive depletions will improve water productivity in the Fergana Valley and increase water availability for the downstream water uses.
18 Karimov, Akmal; Molden, David; Khamzina, T.; Platonov, Alexander; Ivanov, Y. 2012. A water accounting procedure to determine the water savings potential of the Fergana Valley. Agricultural Water Management, 108:61-72. (Special issue on "Irrigation efficiency and productivity: scales, systems and science" with contributions by IWMI authors). [doi: https://doi.org/10.1016/j.agwat.2011.11.010]
Water management ; Water accounting ; Water conservation ; Water productivity ; Water use ; Conjunctive use ; Water power ; Upstream ; Downstream ; River basins ; Water storage ; Groundwater recharge / Central Asia / Syrdarya River Basin
(Location: IWMI HQ Call no: PER Record No: H044811)
(1.37 MB)
The Syrdarya River basin in Central Asia exhibits symptoms of scarcity because of growing competition between hydropower upstream and environment, cities and agriculture downstream. Different approaches to water management, based on water savings in agriculture could relieve the stress of competition, yet keep alive a vibrant agriculture. The Fergana Valley, a highly productive area within the upstream of the Syrdarya River, was analyzed to determine the water savings potential of agriculture. This paper used a water accounting procedure to identify both the scope for savings and the strategies to realize those gains. Signi cant nonproductive depletion of water at 681–4164millionm3 (Mm3) was identi ed in the formof evaporation, ows to sinks and pollution. Thewater-saving potential is estimated at 2823Mm3 annually, which is about 10% of the total in ow into the area, through a range of practical approaches. This strategy would bring regional bene ts by reallocation of surplus winter ow from the upstream for summer use in the downstream.
19 Karimov, Akmal; Giordano, Mark; Mukherji, Aditi; Borisov, V.; Djumanov, J. 2012. Of transboundary basins, integrated water resources management (IWRM) and second best solutions: the case of groundwater banking in Central Asia. Water Policy, 14(1):99-111. [doi: https://doi.org/ 10.2166/wp.2011.149]
Water management ; History ; Groundwater development ; Water budget ; River basin management ; International waters ; Energy generation ; Water power ; Valleys / Central Asia / Tajikistan / Kazakhstan / Kyrgyzstan / Uzbekistan / Syrdarya River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044972)
(0.31 MB)
This paper tells the story of trade-off between hydropower and irrigation and its implications for groundwater use in Syrdarya basin in Central Asia. With the independence of the central Asian republics, this trade-off has become a transboundary issue. Efforts to coordinate bilateral action using integrated water resources management (IWRM) principles of basin-wide cooperation have not yet yielded the hoped for results. This paper shows that there could be a ‘second best’ option of solving at least part of this transboundary problem by ‘banking’ winter flows released for hydropower production in Kyrgyzstan in the underground aquifers of Uzbekistan’s Fergana Valley and extracting it for irrigation in the summer months.
20 Karimov, Akmal; Mavlonov, A.; Miryusupov, F.; Gracheva, I.; Borisov, V.; Abdurahmonov, B. 2012. Modelling policy alternatives toward managed aquifer recharge in the Fergana Valley, Central Asia. Water International, 37(4):380-394. (Special issue on "How hydrological models support informed decision making in developing countries" with contributions by IWMI authors). [doi: https://doi.org/10.1080/02508060.2012.706432]
Aquifers ; Groundwater recharge ; Valleys ; Rivers ; Downstream ; Upstream ; Models ; Policy making ; Water power ; Water management ; Water supply ; Conjunctive use ; Water use ; Irrigation water ; Reservoirs / Central Asia / Uzbekistan / Fergana Valley / Syrdarya River / Isfara Aquifer / Sokh Aquifer / Kairakum Reservoir / Chardara Reservoir
(Location: IWMI HQ Call no: PER Record No: H045025)
(1.14 MB)
Storing flow of the Syrdarya River in the aquifers of the upstream Fergana Valley in winter and recovery of this water in summer is examined as a solution for competing demands between upstream hydropower and downstream irrigation. Modelling of the Isfara and Sokh aquifers suggests the potential of reducing the Syrdarya River flow to the Fergana Valley downstream by 540 Mm3 in winter and increasing it by 540 Mm3 in summer. Implementing the proposed strategy in only these two aquifers would cover over 25% of the summer water deficit in the Syrdarya River downstream.
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