scholarly journals Water Resources Use in the basin of the Lake Khanka

2019 ◽  
Author(s):  
Keyword(s):  
Water Resources ◽  
Water Use ◽  
High Water ◽  
Water Withdrawal ◽  
Lake Basin ◽  
Economic Activities ◽  
Water Losses ◽  
Lake Water Level ◽  
Russian Part ◽  
Lake Khanka

The article deals with investigation of the Lake Khanka water resources’ use. We have stated that the predominant development of agriculture determines the water resources use on both the Russian part and the Chinese part of the basin. We have assessed the irrigated land areas and water volumes used for this end, as well as economic activities’ impact of the lake water level. On the basis of statistical data, satellite images and published scientific articles we have assessed for the first time the irrigated lands’ dynamics in the Lake Khanka basin over the 1960–2015 period. Analysis of the official information and the expert-restored data on water withdrawal made it possible firstly to estimate the dynamics of water use for irrigation and establish the values of water consumption (irrevocable water losses) during irrigation in the Russian part of the lake basin for the same period. We have established that the source for irrigating rice crops in Russia is the lake itself. The use of Lake Khanka’s waters in China is possible only in low water years. The influence of water use on irrigation in the Russian part of the basin at the lake level for the entire period of rice cultivation was manifested only in its reduction, and to a very small extent. In high water years, the Lake Malaya Khanka acts as a reservoir for the flood waters of the Mulinghe River, which, if discharged into the Lake Khanka, can have an impact on the growth of the Lake Khanka level.

Water withdrawal for brackish and inland aquaculture, and options to produce more fish in ponds with present water use

Water Policy ◽  
2009 ◽  
Vol 11 (S1) ◽  
pp. 52-68 ◽  
Author(s):  
M. C. J. Verdegem ◽  
R. H. Bosma
Keyword(s):  
Water Use ◽  
Brackish Water ◽  
Water Withdrawal ◽  
Total Water ◽  
Water Losses ◽  
Pond Aquaculture ◽  
Freshwater Aquaculture ◽  
Increase Productivity ◽  
Freshwater Use ◽  
Brackish Water Aquaculture

This paper reviews freshwater use in inland and coastal pond aquaculture, and focuses on options to increase productivity while reducing water use. Total freshwater use depends on system-associated and feed-associated water losses. System-associated water losses depend on total area, evaporation, infiltration and water replacement. About 8,750,000 ha freshwater and 2,333,000 ha brackish water ponds are in use today. Total water withdrawal in freshwater aquaculture is estimated at 16.9 m3/kg production, representing 429 km3/yr, which is 3.6% of flowing water globally. Infiltration and replacement water recharges aquifers; if these losses are clean, their re-use decreases aquaculture-related water withdrawal by nearly 60%. A further reduction in freshwater use in aquaculture can come from intensification and aquafeed development. The goal should be to feed the pond, not the fish. A tripling of average pond production should be possible, without increasing total freshwater use. Such improvements will also benefit brackish water aquaculture, which could in turn further reduce freshwater use by increasing the productivity of saline systems.

scholarly journals Policy reforms to promote efficient and sustainable water use in Swiss agriculture

Water Policy ◽  
2012 ◽  
Vol 14 (5) ◽  
pp. 887-901 ◽  
Author(s):  
Robert Finger ◽  
Niklaus Lehmann
Keyword(s):  
Water Resources ◽  
Water Use ◽  
Sustainable Use ◽  
Water Saving ◽  
Water Withdrawal ◽  
Policy Reforms ◽  
Environmental Laws ◽  
Scarce Water ◽  
Irrigated Crops ◽  
Irrigation Technologies

The more sustainable use of scarce water resources is a policy goal in several countries. In this regard, current discussions on potential policy reforms in Switzerland revolve around the subsidization of water-saving irrigation technologies. Today, the share of drip irrigation systems is low, at 3%. In Switzerland, environmental laws specify levels of water flow that must not be undercut. Variable pricing of water, however, has not yet been used. This paper analyzes whether subsidies on water-saving irrigation techniques would be beneficial in this legislative setting, and shows that such subsidies may have crowding out effects because they could provide incentives to switch from non-irrigated crops (e.g. wheat) to the production of crops (e.g. potatoes) that require irrigation. This may result in even higher water withdrawal rates. Such an increased competition for water resources may also result in adverse conditions for farmers. By contrast, our analysis shows the implementation of water prices could lead to a sustainable increase in the share of water-saving technologies, to a shift from irrigated to non-irrigated crops, and therefore to a reduction of overall water use in agriculture. Thus, the introduction of water prices should have absolute priority if agricultural water policies are reformed in Switzerland.

scholarly journals Causes of the Transboundary Lake Khanka Extreme High Water Level

2016 ◽  
pp. 62
Author(s):  
Keyword(s):  
Water Level ◽  
Lake Level ◽  
High Water ◽  
Water Levels ◽  
Anthropogenic Factors ◽  
Economic Activities ◽  
Republic Of China ◽  
High Water Level ◽  
Level Regime ◽  
Lake Khanka

Reasons of the extremely high water level in Lake Khanka (it was 0.5 m higher the historical maximum over the past years) have been revealed within the frameworks of the carried out exploration. The lake capacity characteristics alteration due to the natural and anthropogenic factors’ impact has been assessed. We have considered the factors that form the Lake Khanka level regime, i.e. natural: atmosphere circulation, atmospheric perspiration, river inflow to the lake, evaporation from the lake surface, and outflow; anthropogenic: economic activities on the catchment on Russian and Chinese territories (hydro/melioration and the runoff transfer). The passage capacity of the Sungachi River, the only outflow from the lake, has been analyzed in details at different water levels in Lake Khanka. The paper is based on summing up and analysis of information on the lake hydro/meteorological regime and economic activities on its catchment, as well as reference literature. As a result of the study the authors for the first time has identified the main reason of the abnormal rise of the Kanka level. It was found that the significant transformation of the lake level regime occurred due to the Mulinkhe Rivers runoff transfer to Lake Malaya Khanka from the People’s Republic of China. A forecast of the lake level for 2016 taking into consideration different scenarios of the basin moistening has been given. In connection with the forecasted rise of the water level in Lake Khanka in the nearest future we propose a number of measures aimed to minimize inevitable damage to the Russian party.

scholarly journals An integrated model for the assessment of global water resources – Part 2: Applications and assessments

2008 ◽  
Vol 12 (4) ◽  
pp. 1027-1037 ◽  
Author(s):  
N. Hanasaki ◽  
S. Kanae ◽  
T. Oki ◽  
K. Masuda ◽  
K. Motoya ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Use ◽  
Water Availability ◽  
Asian Monsoon ◽  
Environmental Flow ◽  
Water Withdrawal ◽  
Monsoon Region ◽  
Asian Monsoon Region ◽  
Meteorological Forcing ◽  
Global Water

Abstract. To assess global water resources from the perspective of subannual variation in water availability and water use, an integrated water resources model was developed. In a companion report, we presented the global meteorological forcing input used to drive the model and six modules, namely, the land surface hydrology module, the river routing module, the crop growth module, the reservoir operation module, the environmental flow requirement module, and the anthropogenic withdrawal module. Here, we present the results of the model application and global water resources assessments. First, the timing and volume of simulated agriculture water use were examined because agricultural use composes approximately 85% of total consumptive water withdrawal in the world. The estimated crop calendar showed good agreement with earlier reports for wheat, maize, and rice in major countries of production. In major countries, the error in the planting date was ±1 mo, but there were some exceptional cases. The estimated irrigation water withdrawal also showed fair agreement with country statistics, but tended to be underestimated in countries in the Asian monsoon region. The results indicate the validity of the model and the input meteorological forcing because site-specific parameter tuning was not used in the series of simulations. Finally, global water resources were assessed on a subannual basis using a newly devised index. This index located water-stressed regions that were undetected in earlier studies. These regions, which are indicated by a gap in the subannual distribution of water availability and water use, include the Sahel, the Asian monsoon region, and southern Africa. The simulation results show that the reservoir operations of major reservoirs (>1 km3) and the allocation of environmental flow requirements can alter the population under high water stress by approximately −11% to +5% globally. The integrated model is applicable to assessments of various global environmental projections such as climate change.

scholarly journals Analysis of regional features of water use structure in the North Caucasus. Part 1. Water availability and water consumption

2021 ◽  
pp. 96-105
Author(s):  
Е.А. Rybak ◽  
◽  
О.О. Rybak ◽  
◽  
◽  
...  
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Use ◽  
Water Consumption ◽  
Water Withdrawal ◽  
Negative Consequences ◽  
North Caucasus ◽  
The North ◽  
Access To Water ◽  
The Impact

The key task of the societal development is to ensure effective management of water resources. As a consequence of aggravation of water problems in the world, the issues of sustainable and guaranteed access to water are considered as one of the components of ensuring food security, conservation and restoration recovery of natural resources, which are the basis of life support for the population. To date, the regulation of water resources in the North Caucasus experiences difficulties resulting from fragmented water use, unequal access to water, and contradictory legislation in the field of water use regulation. These problems are compounded by two factors: climate change and demographic situation. The main problem of water consumption in Russia is the irrational and ineffective use of water resources and, as a result, high specific water consumption. In the North Caucasus, water consumption is currently one of the highest in Russia. The characteristics of the impact on water resources are directly related to the use of water, the main elements of which are the water withdrawal from natural sources, the use of water and the discharge of wastewater. Based on open statistical sources, we analyzed the current situation in the use of water resources in the North Caucasus. The North Caucasus is characterized by problems similar to those of many regions of the country, in particular, large losses during transportation due to the emergency state of water supply networks and treatment facilities. Water supply problems in the North Caucasus are expected to worsen in the future. If urgent measures are not taken, the complex of problems will only accumulate. To overcome their negative consequences, it is necessary to revise the water use strategy and change the water consumption structure.

WATER RESOURCES AND WATER SUPPLY OF KYRGYZSTAN

2021 ◽  
pp. 117-124
Author(s):  
D. K. OSMONBETOVA ◽  
Keyword(s):  
Drinking Water ◽  
Water Resources ◽  
Water Supply ◽  
High Water ◽  
Irrigated Agriculture ◽  
Water Losses ◽  
The North ◽  
Per Capita ◽  
Quantitative Indicators ◽  
North And South

The water resources of Kyrgyzstan, the uneven distribution of water resources across the territory are considered. A map of the distribution of the population, water resources and water supply by regions was prepared which is based on the comparative analysis of several indicators of the administrative-territorial units of the country. The distribution of water resources was presented in the following indicators – water supply across the territory of administrative-territorial units and water supply per capita per year. The quantitative indicators of water intake, the directions of the use of the country’s water resources by regions, such as irrigated agriculture, production needs and communal drinking water supply, are described in detail. The sources of drinking water and the amount of water losses are indicated, the main reasons for high water losses are determined. The differences between the northern and southern regions of the country in terms of water supply, the ratio of the north and south of the country in terms of water use have been determined. Among the regions of Kyrgyzstan, a more detailed description of the use of water resources was given for the Chui region which makes the greatest contribution to the country’s economy.

scholarly journals WATER RESOURCES OF THE RUSSIAN‐KAZAKHSTAN TRANSBOUNDARY REGION AND THEIR USE

2019 ◽  
Vol 14 (2) ◽  
pp. 70-86
Author(s):  
I. D. Rybkina ◽  
Zh. T. Sivokhip
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Use ◽  
Water Consumption ◽  
Agricultural Sector ◽  
River Flow ◽  
Comparative Assessment ◽  
Management Problem ◽  
Water Losses ◽  
Consumption Structure

Aim. The study is aimed at examining the regional specifics of using water resources in the Russian‐Kazakhstan transboundary region, taking the current hydroclimatic situation into account.Methods. Statistical data on the availability and use of water resources in the regions of the Russian Federation and the Republic of Kazakhstan served as the initial data for the study. A comparative assessment of water supply was carried out applying traditional procedures widely used in Russia and abroad. The following indicators of water use efficiency were used: volumes of circulating and re‐sequential water supply (million m3), water losses during transportation (million m3) and water intensity of the gross regional product (GRP).Results. It was found that, over the past 20 years, a significant transformation of the water consumption structure has taken place in the studied regions. In the Russian regions, the most serious transformation of the consumption structure occurred in the agricultural sector. A comparative assessment of water supply suggests that most regions within the Russian‐Kazakhstan transboundary territory are characterized by relatively high levels of water availability.Main conclusions. The results indicate a significant impact of socio‐economic transformations in the Russian‐Kazakhstan region on the structure of water consumption, water supply, as well as indicators of water resource efficiency. The current water management problem consists in guaranteed provision of the population and economy with fresh water under the conditions of the spatio‐temporal variability of the river flow. Thus, the integrated management of water resources within the Russian‐Kazakhstan transboundary region should be based on improving the effi‐ ciency of water use in all sectors of the water economy, taking modern hydroclimatic changes into account. 

scholarly journals Multivariate modeling of river water withdrawal using a hybrid evolutionary data-driven method

2021 ◽  
Author(s):  
Alireza Emadi ◽  
Reza Sobhani ◽  
Hossein Ahmadi ◽  
Arezoo Boroomandnia ◽  
Sarvin Zamanzad-Ghavidel ◽  
...  
Keyword(s):  
Land Use ◽  
Water Resources ◽  
River Water ◽  
Flow Rate ◽  
The Other ◽  
Data Driven ◽  
Water Withdrawal ◽  
Lake Basin ◽  
Inference System ◽  
Use Factors

Abstract Water resources are one of the most important features of the environment to meet human needs. In the current research, morphological, quantitative and qualitative hydrological, and land use factors as well as the combined factor, which is the combination of effective variables of the aforementioned factors, have been used to estimate River Water Withdrawal (RWW) for agricultural uses. Lavasanat and Qazvin are selected as study areas, located in the Namak-lake basin in Iran, with Bsk and Csa climate categories, respectively. Estimation of RWW is performed using single and Wavelet-hybrid (W-hybrid) data-driven methods, including Artificial Neural Networks (ANNs), Wavelet-ANN (WANNs), Adaptive Neuro-Fuzzy Inference System (ANFIS), Wavelet-ANFIS (WANFIS), Gene Expression Programming (GEP), and Wavelet-GEP (WGEP). Due to the evaluation criteria, the performance of the WGEP model is the best among others for estimating RWW variables in both study areas. Considering the W-hybrid models with data de-noising for estimating RWW in Lavasanat and Qazvin study areas, the obtained values of RMSE for WGEP11 to WGEP15 and WGEP21 to WGEP25 equal 67.268, 54.659, 80.871, 50.796, 15.676 and 105.532, 96.615, 105.018, 160.961, 44.332, respectively. The results indicate that WGEP and ANN are the best and poorest models in both study areas without regarding climate conditions effects. Also, a combined factor which includes River Width (RW), minimum flow rate (QMin), average flow rate (QMean), Electrical Conductivity (EC), and Cultivated Area (CA) variables, is introduced as the best factor to estimate RWW variables compared to the other factors in both Bsk and Csa climate categories. On the other hand, qualitative hydrological and land use factors were the weakest ones to estimate RWW variables in Bsk and Csa climate categories, respectively. Therefore, the current study explores that the mathematical relations for estimating RWW have a significant effect on water resources management and planning by policymakers in the future.

scholarly journals Water seasonality in granting permits and impact of irrigation in the Dourados River basin, MS, Brazil

2017 ◽  
Vol 21 (7) ◽  
pp. 499-504 ◽  
Author(s):  
Diovany D. Ramos ◽  
Silvio B. Pereira ◽  
Fabiane K. Arai ◽  
Felipe A. dos Santos ◽  
Thiago de O. Carnevali
Keyword(s):  
River Basin ◽  
Water Use ◽  
Water Availability ◽  
High Water ◽  
Water Withdrawal ◽  
Critical Periods ◽  
Monthly Streamflow ◽  
Annual Water ◽  
The Impact

ABSTRACT The objective of this study was to evaluate water seasonality in the process of granting permits and the impact of irrigation in the Dourados River basin. For that, the hydrological behavior of the basin was analyzed. The minimal streamflows (Q7,10 and Q95), irrigation withdrawal flow (Qr) and the percent variation of the grant flows relative to monthly seasonal period in relation to the monthly withdrawal flow were obtained. The results allowed to verify that using criteria based on the monthly streamflow allows for better management of water use, because it allows for greater utilization of this resource in times with high water availability and imposes a realistic restriction during critical periods. The average annual water withdrawal for irrigation in the basin during the studied period was on the order of 2.99 m3 s-1, and the withdrawal flow in the month of highest demand (August) was 5.95 m3 s-1.

scholarly journals A Geração de Conflitos pelo Uso da Água na Bacia do Rio Paracatu, Noroeste de Minas Gerais, Brasil

2021 ◽  
Vol 14 (2) ◽  
pp. 834
Author(s):  
Mariana Morales Leite Costa ◽  
Aline Souza Cavalcante ◽  
Cíntia Maria Ribeiro Vilarinho ◽  
Marcelo Gonzaga Muller ◽  
Roberto Cezar Almeida Monte-Mor ◽  
...  
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Use ◽  
Water Demand ◽  
High Water ◽  
Minas Gerais ◽  
Master Plan ◽  
Conflict Area ◽  
The World ◽  
Water Courses

Os conflitos pela água são decorrentes da grande demanda hídrica, cada vez mais frequente, devido à diminuição do abastecimento em todo o mundo. No Brasil, os conflitos são declarados em várias bacias hidrográficas, cenário que colocou diversas regiões em situação de escassez hídrica. Assim, o objetivo do estudo foi avaliar indícios de conflitos pela água na bacia do rio Paracatu, o que se justifica pela necessidade de aprofundar conhecimentos, visto que o país possui uma das maiores reservas de água doce do mundo e apresenta inúmeras situações de extrema escassez e dificuldade de acesso desse o recurso. A pesquisa envolveu a lista de declarações de áreas de conflitos na bacia, os levantamentos de outorgas e usos insignificantes e a análise do Plano Diretor de Recursos Hídricos (PDRH). Dessa forma, os resultados mostraram que o PDRH da bacia do Paracatu não foi atualizado conforme recomendado, além de não apontar diretamente o potencial de indisponibilidade hídrica na região. Além disso, houve um aumento de 66% de concessões com uma relação crescente com o número de Declarações de Áreas de Conflitos (DAC) emitidas. Os conflitos gerados pela escassez hídrica influenciam significativamente as condições socioambientais da bacia, onde, a maioria dos municípios da própria bacia se encontram em situação de extrema pobreza, de acordo com os índices econômicos atualmente utilizados. Portanto, o estudo identificou a existência de cinco cursos d'água com conflitos declarados, demonstrando a necessidade de planejamento e melhoria da gestão do uso da água para garantir o abastecimento desse recurso para as atuais e futuras gerações.    The Generation of Conflicts over Water Use in the Paracatu River Basin,                                Northwest of Minas Gerais, Brazil A B S T R A C TConflicts over water originate from the high-water demand, which has been increasingly frequent due to the decrease in water supply worldwide. In Brazil, conflicts are declared in several hydrographic basins; scenario that put several regions in a situation of water scarcity. Thus, the objective of the study was to evaluate evidence of conflict over water in the Paracatu River basin, justified by the need to deepen knowledge, since the country has the largest freshwater reserve in the world and experiences situations of extreme scarcity and difficulty in accessing the resource. The research involved the list of conflict area declarations in the basin, survey of grants and insignificant uses and analysis of the water resources master plan. Thus, the results showed that the water resources development plan for the Paracatu basin was not updated as recommended, in addition to not directly pointing out the potential for water unavailability in the region. In addition, there was a 66% increase in the number of grants with an increasing relationship to the number of DAC’s issued. Conflicts significantly influence the socio-environmental conditions of the basin, where most municipalities are in extreme poverty. In conclusion, the work identified the existence of five water courses with declared conflicts, demonstrating the need for planning and improving water use management to guarantee the supply of this resource for the current and future generations.Keywords - Water Demand, Conflict Area Declaration, Irrigation

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