Comparison of practices

Use of water resources

Использование водных ресурсов

Country: Kyrgyzstan

Province: Osh Region

District: Kara-Suu District

Other settlement: WUAs in proximity of the Aravan-Akbura Main Canal

Country: Kazakhstan

Province: Jambyl Region

Akbura River Basin

Shallow groundwater occurrence

Объект расположен в зоне предгорьях значительных перепадов местности

Start date: 01.01.2003

End date: 31.12.2011

Start date: 01.01.2006

End date: 31.12.2007

• Uneven distribution of water to consumers (head-end issue),
• Unstable water supply to consumers,
• Significant organizational water losses

Водная эрозия, сброс, неравномерное распределение оросительной воды, низкая урожайность

Principles of water rotation and public participation

Техника и технология полива комплектом синхронного импульсного дождевания (КСИД-10С)

Uniform and fair water distribution among water consumers (WCs) inside WUAs, clear alignment and coordination of water supply schedules via internal WUA networks of all levels with water supply schedules to WUA derivation canals from main canals is ensured by enhancing existing water distribution planning techniques based on water rotation (recirculation) and volumes of technically deliverable water executed via decade planning (within vegetation period decades).

Actions:

In accordance with the approved decade-based water distribution scheduled plan, decade water quantity is supplied to WCs in turns as per their water requests.  The schedules can be quickly adjusted depending on water availability in concerned water bodies.  The technique is based on wide engagement of WCs in distribution procedures – not only WUA personnel but also WCs themselves know who is receiving water, when and how much of it and, thus, can monitor each other and assess each other’s operations.  This promotes better mutual water discipline among WCs.  The process can be controlled from beginning to end based on corresponding documents (decade water distribution schedules, water request from WCs and WUAs, water request registration logs, water accounting logs at WUA headworks and WUA derivation canals.

Results:

As the result of introducing the decade-based water distribution plan in 2009-2011:

• actual water intake decreased, despite the fact that water supply to WCs remained high due to the increased efficiency of water distribution inside WUAs (90% of water availability) and ensured high yields;
• irrigation network efficiency rate rose from 0.69 to 0.79. The volume of water saved due to reduced losses along WUA irrigation lines made 8% of the total actual water intake;
• increased net incomes due to yield growth thanks to better water supply of key agricultural crops;
• drastic drop in the number of disputes and conflicts associated with not only water use but also financial, economic and institutional stability of WUAs;
• instead of mineralized collector and water, WCs located in the end sections of WUA networks started to get water safe for their crops.

Мероприятия:

Применяется комплект синхронного импульсного дождевания. Поливная вода предельно равномерно рассредоточивается по всему участку орошаемого пастбищно-сенокосного угодья, который поливается одновременно. При этом подводимый расход воды к импульсному аппарату составляет 0,05-0,3 л/с, к поливному трубопроводу 0,25-2,0 л/с, что сокращает затраты на устройство трубопроводной сети в 3-4 раза по сравнению с обычными системами (комплектами) дождевания. Трубопроводная сеть состоит из труб диаметром от 15 до 25 мм, что значительно облегчает их транспортировку и монтаж в условиях горных склонах.

Технические характеристики:
Режим работы: автоматический и ручной
Площадь полива: 10 га
Водоподача за сутки: до 100 м3/с
Средняя интенсивность дождя – 0,002-0,008 мм/мин
КПД: 99%
КЗИ: 98%
Степень автоматизации полива: 100%

Результаты:

• Осуществлена водоподача в соответствии с потребностью растений в воде с учетом изменяющихся метеорологических условий, запасов влаги в активном слое почвы;
• Исключены: 1) водная эрозия почв, 2) луже-образование и 3) сбросной сток;
• Нет необходимости в водообороте между участками полива.

Lessons learnt:

Thanks to proper water use management inside WUAs, water intake in the upper sections of main canals and rivers decreased by 50-80% and, thus, the unproductive discharge to collectors and depressions reduced also.  Reduced water intake in the head sections of main canals and rivers led to the increased influx of high-quality irrigation water in their end sections resulting in better observance of environmental requirements aimed at preserving wild flora and fauna.

Recommendation:

Country-wide scaling-up of the practice of decade-based water distribution planning inside WUAs is necessary and possible.

Уроки:

Достоинства импульсного дождевания подтверждаются исследованиями, проведенными на других опытных участках КазНИИВХ в Жамбылской области, которые позволили повысить биологическую урожайность яблонь сорта «Голден Делишес» на 10,1-36,8 %, товарную – на 16,6-49,4 % по сравнению с поливом обычным дождеванием.

Рекомендации:

Нужно продолжать применение таких практик на предгорных местностях в Центральной Азии, где есть проблема с энергоснабжением.

The practice is the result of streamlining:

• traditional tools transferred from generation to generation which demonstrate their relevance in modern conditions,
• research works

Отечественные инструменты (результат разработок отечественных научно-исследовательских структур)

1. Cost of implementation: High

2. Approximate cost of investment per 1 ha:

3. O&M costs: High

4. Expert support: Not needed

1. Cost of implementation: Moderate

2. Approximate cost of investment per 1 ha:

3. O&M costs: Low

4. Expert support: Needed at O&M stage

Project title: Integrated Water Resources Management in the Fergana Valley (IWRM-Fergana).

Project duration: Jan 01, 2001-Dec 31, 2012 (12 years).

Project goal and objectives: overall project goal was “to contribute to safer living, environmental sustainability and wide social harmony, to support rural restructuring in Central Asian countries by enhancing water resources management based on the example of the Ferghana Valley”.

Project beneficiaries: WUAs, farmers in project sites.

Project implementer: IWMI, SIC of the ICWC, Project Steering Committee (PSC) consisting of 3 representatives of the Ministries of Rural and Water Management (MRWM) of project target countries, 3 heads of Regional Water Administrations hosting project target sites.

• Guidelines on designing and adjusting water distribution plan on WUA level based on daily planning;
• Guidelines on irrigation water distribution on WUA level;
• Handbook on water use monitoring on WUA level.

SIC ICWC

НИЦ МКВК