The impact of changes in regional development along with the construction of Yogyakarta International Airport in Kulon Progo Regency may affect land use changes as the activities of the surrounding population. Galur-Lendah area, which is located near the city of Yogyakarta and acts as the entrance to Kulon Progo, will also develop. Along with these developments, the determination of the groundwater recharge-discharge area is needed to ensure the availability of groundwater at this site. The purpose of this study was to determine the zonation of groundwater recharge-discharge areas to support the availability of groundwater. The method of research is a spatial analysis using a geographic information system (GIS) based on ratings and weighting values for six parameters, including slope, rainfall, groundwater table depth, soil type, rock permeability, and land use. The field hydrogeological was also conducted to find out rock permeability and groundwater quality (pH, EC, TDS). The results showed that areas with potential for groundwater recharge were in the central and northeastern parts of the study area and the discharge zones in the north and south were with potential infiltration values of 26-43 and 44-59, respectively. However, the recharge area can still function as a discharge zone.
Considering the low annual precipitation of AL-Hoceima province, the groundwater resources, especially in Bokoya, are one of the most critical water resources. Therefore, this study aims to estimate the amount of groundwater recharge into the Bokoya massif. For this purpose, the APLIS method is used in a geographical information environment for mapping the spatial distribution of groundwater recharge rates by combining five parameters: altitude, slope, lithology, infiltration, and soil. This study revealed that the recharge rate ranges between 9 and 76%, and the high rates (61–79%) are the most represented in the study area; this means that the region needs good groundwater management.
Present work is a case study of rainwater harvesting needs and the measures being adopted for the northern region of Haryana, India, covering the districts of Rewari and Mahendergarh. The study was necessitated following the notification by Haryana Urban Development Authority to make rainwater harvesting mandatory for its urban estates. As per the notification: "each individual plot holder having a rooftop area of 100 m2 or more, is required to provide for suitable rainwater harvesting measures". Keeping in view the available soil strata, average rainfall, rainfall intensity, social acceptability etc., a plan has been drafted to comprehensively utilize the rainfall water falling in the campus of Central University of Haryana, Mahendergarh, a campus of around 488 acres of area. Land area requirement for different suggested modes is likely to be a very small percentage of the total catchment’s area. In the first phase, ground water recharge structures for School of Engineering and Technology are suggested. Major objective of the study is to provide rainwater harvesting structures so that ground water storage is enhanced to an extent that it would suffice the drinking water needs of students and faculties residing in the campus. Another objective of the study is that these recharge structures will serve as models and infuse confidence in people to follow the good work initiated by the Haryana Urban Development Authority.
The paper discusses an effective and simple approach to preliminary long-term predictive modelling to the estimation of the effects of predicted climate change on groundwater resources in aquifer recharged by rain infiltration for the end of the 21st century. The groundwater resources in an analysed catchment were assessed based on predicted precipitation and air temperature from seven climate change projections in two sets of the Intergovernmental Panel on Climate Change (IPCC) greenhouse gas emission scenarios (SRES), associated with various regional climate models (RCM). The predicted groundwater resources were obtained by diminishing the predicted renewable resources by recent environmental flows in a river dewatering the catchment. The predicted reserve was assessed taking into account the forecasted groundwater abstraction. The study revealed that the predicted groundwater reserve depended on the assumed prediction model, based on particular SRES and RCM ensembles. The groundwater resources in the study area at the close of the 21st century are expected to considerably decrease when compared to the reference period 1971-1990. The future groundwater reserve assessed by the climate change model based on IPCC emission scenario B2 connected with the regional climate model HIRHAM and regional climate model RCAO, may decrease when compared to the reference period, by 51 or 92%, respectively. In view of the IPCC emission scenario A2 assumptions, this preliminary predictive modelling shows that there may be a shortage of groundwater resources in the analysed catchment in the final decades of the 21st century.
The purpose of this paper was to analyze the effect of detailed recognition and correct mapping of the boundaries between layers of different grain sizes on the results of modelling tests of the vadose zone. The modelling was performed using UnSat Suite software that enables modelling of water permeability and migration ofpollutants through the vadose zone using various numerical programs, including VS2DT that was used in this case study. Directfield research, including drilling of boreholes and ground-penetrating radar investigation, has shown a significant variation in lithology of the vadose zone in a small test area located in Włocławek city. Various sand fractions have been found: from fine to coarse sand, with varying filtration parameters and moisture content. Ground-penetrating radar investigations have enabled a more accurate recognition and refinement ofgeologic structures, particularly in the context oflithological boundaries, including the space between boreholes. The results of the modelling tests conducted in the vadose zone enabled determination of the velocity, time and volume of infiltration water.
An analysis of the dynamics of groundwater levels in the Groundwater Dependent Ecosystems (GDEs), which cover a vast part of the middle Vistula River valley in central Poland was carried out. The study area, typical of large river valleys, was investigated by detailed monitoring of groundwater levels. Based on statistical analysis and the geostatistical modeling of monitoring data for 1999–2013, the range and dynamics of groundwater level fluctuations were determined for the entire interval and for the vegetation periods. The values of retention and infiltration recharge in various periods were compared with average values, indicating intervals of potential groundwater deficiency in GDEs. The amplitude of groundwater fluctuations, retention and infiltration were determined for vegetation periods characterized by the highest water intake by plants and the highest evapotranspiration. Particular attention has been drawn to the analysis of low groundwater levels in the vegetation periods, with water deficiencies potentially threatening the correct functioning of plant communities in GDEs. Moreover, the study has allowed us to indicate areas with insufficient groundwater levels during vegetation periods that may be hazardous to plant communities. The results may be a basis for the elaboration of correct management plans, protection measures and projects, or GDE renaturalization.
The paper presents the dynamics of the groundwater levels characterised in 2014 for 12 dug wells located in the border zone of Western Roztocze and the Lublin Upland. Data showing groundwater level fluctuations were obtained using automated pressure water level recorders installed in wells dug in 2013. Data used for characterisation of the meteorological conditions were provided by the weather station in Janów Lubelski; they comprised daily precipitation values, mean daily values of air temperature at a height of 2.0 m above the ground level, and mean daily values of soil temperature at a 0 m level. The analysis was based on the characteristics of each well in terms of their location and groundwater level fluctuations. The collected material was used in an attempt at verification and completion of assumptions presented by Malinowski (1974) and Janiec (1984) concerning the types of dynamics of groundwater levels characteristic for this region.
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Paleogeńska niecka podhalańska, w obrębie której wykonano otwór badawczy Bukowina Tatrzańska PIG/PNiG–1, znajduje się w północnej części Karpat wewnętrznych – między Tatrami na południu i pienińskim pasem skałkowym (Pieninami) na północy. W 2012 roku ustalono nowe zasoby eksploatacyjne dla otworu Bukowina Tatrzańska PIG/PNiG-1 w wysokości 48 m3•h-1 o mineralizacji 1,65 g•dm-3 i temperaturze wody na wypływie 67,0°C. Typ wody określono jako siarczanowo-wapniowo-sodowy z zawartością siarkowodu.
EN
The hydrogeological test borehole Bukowina Tatrzańska PIG/PNiG-1 was made in the Palaeogene Podhale Basin. The Podhale Basin is located in the northern part of the Inner Carpathians – between the Tatra Mts to the south and the Pieniny Klippen Belt (Pieniny Mts) in the north. In 2012, a new admissible volume of extracted groundwater for the hydrogeological borehole Bukowina Tatrzańska PIG/PNiG-1 was established for 48 m3•h-1, its mineralization for 1,65 g• dm-3 and water temperature of 67,0°C at the outlet. Water type was defined as sulphate-calcium-sodium with hydrogen sulfide contents.
W artykule przedstawiono wyniki badań wpływu opadów i infiltracji na zasilanie paleogeńskich poziomów wodonośnych w skałach fliszowych. Badania wskazują, że wielkość zasobów eksploatacyjnych w rejonie Tylicza wiąże się ściśle z reżimem zasilania, dlatego też w pracy określono terminy występowania stanów charakterystycznych zwierciadła wód podziemnych oraz amplitud wzniosu i spadku zwierciadła na tle wielkości opadów i infiltracji.
EN
The paper describes research on the effect of precipitation and infiltration on the groundwater recharge of the Palaeogene aquifer. Since the safe yield in the Tylicz region is closely linked to the recharge regime, the dates of occurrence of specific groundwater levels and amplitudes of water table increase and decrease have been characterised. These data have been discussed on the background of precipitation and infiltration rates.
W artykule określono wielkość zasilania wód podziemnych na podstawie infiltracji opadów atmosferycznych. Badania prowadzono w zlewniach dwóch rzek: Rudawy i Stradomki, zlokalizowanych w południowej Polsce. Zasilanie z infiltracji opadów uzyskano na podstawie średniej wielkości opadów atmosferycznych oraz odpowiednio dobranych dla poszczególnych typów utworów powierzchniowych wskaźników infiltracji efektywnej. Obliczono również wielkość zasobów odnawialnych wód podziemnych za pomocą hydrologicznej metody Wundta, czyli wielkość przepływów w rzekach.
EN
The paper describes the assessment of groundwater recharge on the basis of precipitation infiltration. Investigations were carried out on two selected catchments located in southern Poland: Rudawa and Stradomka. Groundwater recharge was assessed on the basis of the mean precipitation value and effective infiltration coefficients, well-chosen for individual types of surface material. Groundwater renewable resources, i.e. the amount of river flows obtained from the Wundt's method, are also presented. The results received from the two methods were compared.
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The paper describes methodology of hydrogeological modelling of Raba river watershed, about 1565 km2 area, in flysch Outer Carpathians. Hydrodynamic model was a first step in procedure of point out groundwater bodies threatened with the risk of not achieving the European Water Framework Directive environmental aims. There was accepted conceptual model of recharge and groundwater circulation in fissured-porous sandstone-shale material, assuming that groundwater circulation could be reduced to a one aquifer in surface part of flysch rocks, connected with quaternary river valleys. There was adopted effective infiltration coefficient of selected types of surface material. There was pointed the importance of comparison the recharge defined by the infiltration method with underground runoff to rivers described by Wundt-Kille hydrological methodology. There was mentioned the effect of model scale on the precision of hydrogeological conditions projection.
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