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Hydrogeological cross-section A-B (Figure 1). Legend: 1. Sandy clay; 2. Sand; 3. Gravel; 4. Sandy clay, clay.
Source publication
The paper describes the establishment and testing of an algorithm for developing sustainable management plans associated with groundwater source protection against potential pollutants and discusses the effectiveness of individual systems. The applied methodology pertains to groundwater resource management, particularly those cases that involve riv...
Contexts in source publication
Context 1
... sandy part of the aquifer is in direct hydraulic contact with the Danube River and one of its arms-the Dunavac. The sandy layer overlies gravels (Figure 2). The plans call for groundwater extraction from the aquifer formed in these gravels and sands. ...
Context 2
... the canal alternative would require electric power for the pumping station that would control the water level in the canal. Figure 19 shows the effect of the protection systems on groundwater levels along section A-B (see Figure 2). Figure 19. ...
Citations
... In the conditions of the Khorezm region, one of the most important tasks is the rational use of water resources, as well as the prevention of secondary salinization of irrigated, that is, cultivated areas, the issues of reducing water waste from irrigation networks, and the implementation of measures aimed at improving the technologies of efficient use of water in the reduction of water formed in collector-sink networks [4][5][6][7]. From this point of view, analysis of indicators of irrigation networks (utility coefficient, technical condition, service area, water supply, water carrying capacity, etc.) based on modern methods, development of measures for modernization of hydromelioration systems and taking into account meteorological indicators it is necessary to improve the methods of calculating the irrigation rates for the crops, predicting the water taken into the canal and the water distribution. ...
... 3 Modern water-saving salt washing technologies for soil salt washing in the region: biological compounds that increase the solubility of soil salts in water: use of "Biosolvent" and "Supersal", with "Tact" (blocking salt in the first step), etc. experiments on the application of salt washing technologies have not been carried out at all. 4 There is not enough research on the technology of using collector water as an additional resource in irrigated agriculture, including the biotechnology of biological reduction of mineralization. ...
This article presents the results of scientific research aimed at the rational use of water resources in the Khorezm region under the conditions of water shortage, prevention of secondary salinization of irrigated areas, reduction of water wastage from irrigation networks, and improvement of efficient water use technologies in reducing the water formed in collector-sink networks.
... Timeseries measurements and analyses prove to be particularly meaningful, e.g., [11,12], especially in assessing the sustainability of the withdrawals, e.g., [13][14][15][16]. They are also valuable in calibrating and validating numerical models that are focused on regional or field-scales, e.g., [17][18][19][20][21]. ...
This study compares three imputation methods applied to the field observations of hydraulic head in subsurface hydrology. Hydrogeological studies that analyze the timeseries of groundwater elevations often face issues with missing data that may mislead both the interpretation of the relevant processes and the accuracy of the analyses. The imputation methods adopted for this comparative study are relatively simple to be implemented and thus are easily applicable to large datasets. They are: (i) the spline interpolation, (ii) the autoregressive linear model, and (iii) the patched kriging. The average of their results is also analyzed. By artificially generating gaps in timeseries, the results of the various imputation methods are tested. The spline interpolation is shown to be the poorest performing one. The patched kriging method usually proves to be the best option, exploiting the spatial correlations of the groundwater elevations, even though spurious trends due to the the activation of neighboring sensors at times affect their reconstructions. The autoregressive linear model proves to be a reasonable choice; however, it lacks hydrogeological controls. The ensemble average of all methods is a reasonable compromise. Additionally, by interpolating a large dataset of 53 timeseries observing the variabilities of statistical measures, the study finds that the specific choice of the imputation method only marginally affects the overarching statistics.
Water management problem are one of the major concerns in the Indian Territory due to decrease in water level alongside mismanagement of water distribution systems. It was found that the earlier drinking water supply networks has many drawbacks and indeed requirement to modify them. So, there are several governments projects having major concern to mitigate the leakages, unnecessary loss, tap modification, reservoir and best water distribution system. Hence, this study provides an efficient approach to improve water distribution system with minimizing the cost alongside fulfillment of adequate water demand and pressure to the consumer end. The procedure opted to design that should satisfied the parameters like pipe material, velocity of flow in pipe, residual nodal pressure, reservoir level, unit head-loss, peak factor and available commercial pipe diameters in adherence to the CPHEEO manual clauses. This study also simulates the water distribution network and calibrates the different parameters for implementing in the rural area. Therefore, a case at Cossipore, located in the Northern part of East Kolkata in West Bengal, India was carried out. In order to mitigate the menace of high arsenic concentration in ground water in the district, it was decided to supply surface water with adequate and proper treatment for human consumption as a long-term measure to save the people from Arsenic contamination. The water loss management in the Cossipore service zone, taken up as a pilot project in Kolkata towards the improvement of quality and the sustainability in water supply and specifically in water distribution management.
The appropriate division of underground drinking water source protection zones is a low-cost method of preventing water source pollution and ensuring a supply of safe drinking water. Based on FEFLOW, a groundwater flow model of large water sources was established for Luan River, North China. Trace lines of particle reverse migration for 100 and 1000 days were obtained by random walks. According to the trace morphology, the water sources in the riverside water source area were divided into four categories. The first- and second-grade protection areas were delimited by ArcGIS, with areas of 0.375 and 1.20 km2. The local and global sensitivity of the permeability coefficient (K) and effective porosity (ne) effects on the area of groundwater protection zones were calculated. The area of the protection zones was positively correlated with K and negatively correlated with ne. The variation in the protected zone caused by the simultaneous changes in K and ne is the same as that of ne alone, and the global sensitivity is closer to the local sensitivity of ne. This indicates that ne has a greater impact than K on the scope of groundwater protection zones. Moreover, global sensitivity is not simply a superposition of local sensitivity, and the interaction between parameters can reduce the effect of a parameter acting alone on the delineation of protection zones. This also shows that the global sensitivity is closer to the actual situation than the local sensitivity, thus providing a scientific basis for the delimitation and monitoring of water source protection zones.
