Modernization of National Irrigation Systems in the Philippines: Linking Design, Operation and Water Supply

2018 ◽  
Vol 68 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Mona Liza F. Delos Reyes ◽  
Bart Schultz
Keyword(s):  
Water Supply ◽  
The Philippines ◽  
Irrigation Systems

Sustainable Irrigation: Karez System in Afghanistan

2020 ◽  
Vol 6 (2) ◽  
pp. 1-18
Author(s):  
Abdullah Azami ◽  
◽  
Jay Sagin ◽  
Sayed Hashmat Sadat ◽  
Hejratullah Hejran ◽  
...  
Keyword(s):  
Supply Chain ◽  
Water Supply ◽  
Land Surface ◽  
Irrigation System ◽  
Irrigation Scheme ◽  
Irrigation Systems ◽  
Irrigation Methods ◽  
Sustainable Water Supply ◽  
Water Based ◽  
Sustainable Irrigation

In Afghanistan, water is mostly used for agricultural purposes. The water supply chain requires updating to ensure its sustainability. Different irrigation methods – such as surface water based irrigation (via canals), groundwater based irrigation, and the Karez irrigation system – are applied across the country. Considering the compatibility of the Karez system with the environment, it can be deemed the most effective irrigation scheme, as it allows collecting a significant amount of groundwater and conveying it to land surface via sub-horizontal tunnels using gravity. This article analyzes Afghanistan’s Karez irrigation systems currently feeding water to over 170,000 ha of farmland with a potential to expand and become a component of sustainable water supply chain.

ОЦЕНКА ТЕХНИЧЕСКОГО СОСТОЯНИЯ ОРОСИТЕЛЬНЫХ СИСТЕМ НА СОВРЕМЕННОМ УРОВНЕ И СИТУАЦИОННЫЙ ПРОГНОЗ ИЗМЕНЕНИЯ ПОКАЗАТЕЛЕЙ ВОДОПОЛЬЗОВАНИЯ В ДОЛГОСРОЧНОЙ ПЕРСПЕКТИВЕ (2021 - 2030 гг.)

2020 ◽  
pp. 6
Author(s):  
S.D. Isaeva ◽  
A.L. Buber
Keyword(s):  
Mathematical Modeling ◽  
Water Supply ◽  
Water Use ◽  
Systems Analysis ◽  
Irrigation Efficiency ◽  
Water Withdrawal ◽  
Total Water ◽  
Irrigation Systems ◽  
Irrigation Methods ◽  
Irrigated Area

В статье проведен анализ состояния оросительных, в том числе рисовых, систем Краснодарского края за 20 лет. Рассмотрены основные способы полива, динамика орошаемой площади, суммарной водоподачи, оросительные нормы, объем коллекторно-дренажного стока и др. Выявлено сокращение поливаемых земель в Краснодарском крае, снижение суммарного водозабора и оросительных норм. Выполнен аналитический прогноз рассмотренных показателей на перспективу до 2030 г. и предложены меры по развитию и повышению эффективности орошения в Краснодарском крае, прежде всего за счет строгого планирования водопользования на основе цифровых технологий и математического моделирования.Сondition of irrigation systems analysis was carried out in the Krasnodar Territory. Irrigation methods, dynamics of irrigated area, total water supply, irrigation norms are considered. Reduction of irrigated land, total water withdrawal and irrigation norms has been established in the Krasnodar Territory. An analytical forecast of the considered indicators for the future until 2030 has been completed. Measures to develop and improve irrigation efficiency are proposed. Above all, this is rigorous water use planning based on digital technology and mathematical modeling.

Assessment of the process, nature and impact of rehabilitation for development of a moderniZation strategy for national irrigation systems in the Philippines

2015 ◽  
Vol 64 (4) ◽  
pp. 464-478 ◽  
Author(s):  
Mona Liza F. Delos Reyes ◽  
Wilfredo P. David ◽  
Bart Schultz ◽  
Krishna Prasad
Keyword(s):  
The Philippines ◽  
Irrigation Systems

Efficiency and Environmental Effects of Privatizing Waterworks and Sewerage (MWSS) in Metro Manila, Philippines

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
ROSALINA PALANCA TAN
Keyword(s):  
Social Welfare ◽  
Water Supply ◽  
Environmental Sustainability ◽  
Environmental Science ◽  
Domestic Wastewater ◽  
The Philippines ◽  
Urban Region ◽  
Sanitation Services ◽  
Pollution Problem ◽  
Metro Manila

In 1997, the Metropolitan Waterworks and Sewerage System (MWSS) was privatized to meet the rapidly growing demand for water, and sewerage and sanitation services in Metro Manila. The purpose of the study was to determine the impacts of private sector participation in the water supply and sanitation sector in Metro Manila, the foremost urban region of the Philippines. The methodology of the study used two lenses—microeconomic efficiency and environmental sustainability. It was found that MWSS privatization resulted in improvements in efficiency that translated into greater social welfare. Social welfare increased with the expansion in the water supply service coverage, and the reductions in the costs of acquiring water for those previously not connected to MWSS and in the operational costs of MWSS. The privatization, however, had not adequately and appropriately addressed two environment-related concerns with important implications on long-term water supply sustainability. First, sanitation and sewerage facilities had not been expanded sufficiently to address the Metro Manila waterways pollution problem largely caused by domestic wastewater. Second, there were no explicit provisions and concrete programs to reduce dependence on groundwater and curb groundwater depletion.Keywords: Environmental Science, water supply, sanitation and sewerage, privatization,microeconomic efficiency, environmental sustainability, descriptive design,Philippines

Ecological and Economic Efficiency of Diagnostics of Technical Condition of Water Supply Facilities of Irrigation Systems

2018 ◽  
Vol 22 (7) ◽  
pp. 66-71 ◽  
Author(s):  
M.A. Bandurin ◽  
I.F. Yurchenko ◽  
V.A. Volosukhin ◽  
V.V. Vanzha ◽  
Ya.V. Volosukhin
Keyword(s):  
Service Life ◽  
Water Supply ◽  
Technical Condition ◽  
Irrigation Systems ◽  
Automated Control ◽  
Remaining Service Life ◽  
Latent Defects ◽  
Instrument Control ◽  
Automated Instrument ◽  
Diagnostic Detection

The analysis of the current approaches to the assessment of the technical condition of water supply facilities of irrigation systems has been carried out and the need has been established for improving the monitoring technology for reclamative water utilization system on the basis of the development of innovative automated instrument control methods that use the integral evaluation of the remaining service life of structures and the prediction of the service life of the facility. Created software-hardware complex automated diagnostic detection of latent defects providing designs and constructions underlying subgrade acoustic GPR and methods of nondestructive testing, determination of the location and geometric parameters of each structure element malfunctions. As part of the diagnostics, an assessment is carried out: the degree of abrasion, leaching, filtration of concrete elements of structures; indicators of frost resistance and water resistance, the volume of existing damage and the efficiency of the structure. The problem with the evaluation of the effectiveness of the creation and application of automated control systems for technological processes, caused by the lack of standards in the field of melioration regulating such calculations, is identified.

scholarly journals Modern aspects of scientific support for the restoration of drainage systems in the humid zone of Ukraine

2021 ◽  
pp. 39-51
Author(s):  
G. V. Voropay
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
Agricultural Production ◽  
Export Market ◽  
Resource Saving ◽  
Irrigation Systems ◽  
Drainage Systems ◽  
Humid Zone ◽  
Scientific Support ◽  
Water Volumes

Modern aspects of scientific support for the restoration (reconstruction and modernization) of drainage systems in the humid zone of Ukraine were determined, which were established based on the results of the analysis of the current state and features of drainage systems functioning. One of the priority areas is the development of a scientific justification of improving water supply for drainage systems. The most effective and economical technological method of increasing the water supply in reclaimed areas is the accumulation of local drainage runoff. Given the shortage of local drainage and surface runoff, increasing the water supply in reclaimed areas is provided by withdrawing and supplying to reclamation systems extra water volumes from existing reservoirs, rivers, ponds, lakes, located both within and beyond the systems. The current structure of agricultural use of drained lands in the humid zone is subject to both climate change and export market conditions. In agricultural production such crops as grain corn, sunflower, rapeseed, soybeans are cultivated. Changes in the use of drained land should be taken into account when justifying the reconstruction or modernization of drainage systems. This will enable to develop and implement a set of measures for technical re-equipment and reconstruction of drainage systems, introduce advanced resource-saving technology for growing economically attractive crops and ensure effective water regulation on drained land sin accordance with the requirements of agricultural production. The technical state of modern drainage systems in the humid zone is mainly characterized by two conditions: satisfactory, when the systems are under operation (operational) and can perform their functions keeping the design mode, and unsatisfactory, when the restoration of drainage systems is only possible provided modernization measures. Given climate change, the priority measures for the modernization of drainage systems should include work to expand their functionality to regulate soil water regime throughout the growing season. In view of the cost of modernization to expand the functionality of different types of systems (drainage, drainage and irrigation, polder and water circulation) by constructing irrigation systems on them is much lower compared to modernize them to drainage and irrigation ones when  using sluice technology, preference should be given namely to the construction of irrigation systems.

Sign in / Sign up

Export Citation Format

Share Document