Сравнение практик

• Use of water resources
• Use of land resources

Страна: Кыргызстан

Страна: Узбекистан

Область: Хорезмская

Район: Урганчский

Transboundary river

Khorezm Region lies in the northwest of Uzbekistan (between the latitudes of 40N and 42N and longitudes of 60E and 62E). The Region stretches for 280 km from northwest to southeast, and for 80 km – from west to east. The adyr relief is mainly formed by moist-type playa and, to a lesser extent, by meadow and grey-dessert soils; the depressions relief is formed by sands.

Дата начала: 01.04.2012

Дата окончания: 31.10.2016

Дата начала: 01.01.2004

Дата окончания: 31.12.2016

Imperfections of the water management mechanism in the Isfara small transboundary river basin

Inefficient field-level use of irrigation water

The principle of stakeholder engagement in decision-making associated with water management of small transboundary river;

IWRM planning technique

Technology of furrow-based counter irrigation

The river originates in Kyrgyzstan in Ak-Suu Glacier on the northern slope of the Turkestan Ridge 3,193 m above sea level.  The Ak-Suu ruins are located close to the river source.  Near the settlement of Karavshin, the river is called the same name.  Crossing the national border, the river merges with the Kshemysh River (Kshemyshsai) and, further on, the river receives the name of Isfara.

 Actions:

Establishment of stakeholder groups, i.e. Small Basin Councils (SBC) representing local authorities, NGOs, water users and local communities.  SBC secretariats independently hold internal semi-annual meetings.  Thus, the SBCs serve as platforms to exchange opinions and information as well as take joint decisions associated with the enhancement of the overall situation in the river basin.

Results:

Creation of national Small Basin Councils (SBC) on the Isfara River allowed a platform for exchanging opinions and information as well as for drawing joint decisions to improve the overall situation in the Isfara River Basin, including the development of the IWRM basin plan for the target basin.

Technology applicability

In the majority of Central Asian countries, irrigated agriculture is based on flooding irrigation (ex.: wheat) and/or furrow-based irrigation (other crops).  Against the background of climate change and global water shortage, the traditional and/or currently practiced irrigation methods have lost their relevance and are no longer justified, in particular, in the Aral Sea area.  In addition, watering the whole field of uneven relief based on traditional furrow-based technique requires long time. In many cases, traditional watering leads to uneven water distribution (alternating dry and bogging spots) across the field and rising ground water level.  The suggested technology of counter irrigation is suitable for watering areas with even/flat relief, i.e. flat/lowland territories of Central Asian countries.

Technology description

The technology is quite simple and consists of simultaneous irrigation of a field from two sides.  It was appraised in Uzbekistan’s northwestern part within the framework of the ZEF/UNESCO Project.  The technology’s pilot application demonstrated that furrow-based counter irrigation can be used as a technical option of irrigating undeviating (even) sites and increases water efficiency due to more uniform water distribution along furrows.  This effective water-conservation technology has been already widely tested in Central Asian countries, including Uzbekistan (Syr Darya and Khorezm Regions) by SANIIRI.

Advantages

• Water-saving – results of the system’s field pilot testing show that compared to traditional furrow-based irrigation counter watering allows saving up to 20% of irrigation water during vegetation season;
• Decreased seasonal land salination at furrow ends – land salination at furrow ends due to poor absorption of irrigation water and high capillarity can be reduced by half;
• Increased yields – application of the method allows increasing crop yields in general by 30-35%, and specifically for cotton – by 0.5 tons/ha;
• Application and design enhancements of furrow-based irrigation (discharge optimizing, washing irrigation, field laser planning) allow increasing the technology’s efficiency from the current 45% up to 65%.

Lessons learnt:

Introduction of IWRM principles is the pre-requisite of stable and fair water supply irrespective of a given water user’s location.

Recommendations:

Currently, when local stakeholders are represented in SBCs and are engaged in joint water management, it is necessary to hold thematic seminars to ensure sustainability of SBC operations in the future.  In the long term, it might be possible to establish a joint body to manage the whole river basin.

Lessons learnt:

The furrow-based counter irrigation technology is rather simple (entails simultaneous irrigation of a field from both sides) and represents a justified technical option of irrigating undeviating (even) relief land and increasing water efficiency due to more uniform water distribution along furrows.

Recommendations:

The irrigation technology is recommended for application by farmers prior to controlling ground water level and enhancing land reclamation condition via more radical measures.  Under the condition of available investment, this watering method can be widely introduced on engineered basis.

Foreign tools (transfer of foreign experience)

• Traditional tools transferred from generation to generation that proved their efficiency in modern conditions
• Domestic tools (outcomes of research by domestic R&D organizations)

1. Затраты на внедрение: Высокие

2. Примерная стоимость капиталовложений на 1 га:

3. Затраты на поддержание и эксплуатацию: Высокие

4. Экспертная поддержка: Не требуется

1. Затраты на внедрение: Высокие

2. Примерная стоимость капиталовложений на 1 га:

3. Затраты на поддержание и эксплуатацию: Высокие

4. Экспертная поддержка: Не требуется

Development and implementation of basin plans constitute principal elements of integrated water resources management.  Multi-agency coordination mechanism via basin councils or coordination groups is an important advantage of IWRM.  This approach allows streamlined coordination and synergy of actions on all levels of management hierarchy.

Project title: Stakeholder partnership in joint policy-making: assistance to transboundary cooperation in small watersheds of Central Asia.

Project duration: Apr 2012-Oct 2016

Project goal and objectives: introduction of the integrated water resources management (IWRM) practice in three transboundary watersheds and its scaling-up in Central Asia.

Project beneficiaries: communities of the Isfara small transboundary river basin, specialists of water and environmental agencies, farmers.

Project implementer: USAID/CAREC.

Project beneficiaries: water consumers and WUAs.

 Project implementer: Central Asian Research Institute of Irrigation (SANIIRI)

carecnet.org

1) Reference Book on climatically optimized investment in rural areas of the Aral Sea Basin (based on the examples of Uzbekistan and Tajikistan), Tashkent 2016;

2) Paluashova, G.K., Shirokova, Yu.I. “Efficiency of furrow-based counter irrigation of cotton in Khorezm conditions” (http://www.cawater-info.net/bk /improvement- irrigated-agriculture/files/paluashova-shirokova.pdf);

3) Paluashova, G. (2005), “Investigating land saline regime due to changed irrigation technology in the conditions of Khorezm Oasis.  Materials of “Scientific Support as a Factor of Sustainable Water Sector Development” International Research and Applied Conference (Taraz, Kazakhstan).

SIC ICWC

SIC ICWC