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Estimation of direct inflow of groundwater to the Baltic Sea from the territory of Poland authors at cooperation with geologists’ group executed by order of the Ministry of Environments. The geological construction and hydrogeological conditions were characterised on the basis of regional elaboration and numerous publications. A hydrogeological schema was prepared for area of water supply of the waterside...
In the paper, inverse method for the aquifer parameters estimation is presented. This method was utilized during the calibration of the numerical model of the Triassic water reservoir located near the Strzelce Opolskie. Both the inverse procedure and exemplary results on the model calibration are presented.
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...
The process of building the array data file for a groundwater flow model is often the most time-intensive task associated with groundwater modeling projects. PM MODFLOW or Visual MODFLOW allows you to import layer surface data from ASCII (X, Y, Z) text files. GENESIS II is geographical, visualization and graphics free software which offer photorealistic rendering of both imaginative and GIS data....
A constant increase of nitrate ions (NO3-) concentrations (from ca. 10 to 400% in some wells within 1995-2005) is observed within the Major Groundwater Basin (MGWB) 326N exploited by the Water Supply and Sewerage Company in Czestochowa district. The verified fate and transport model allowed for determining concentrations and loads of NO3- introduced into groundwater within infiltrating precipitation,...
This paper presents a numeric model of ground water flow in the Wapno salt dome area. The model was perform in order to verify a conceptual system of water circulation and to determine the influence of geological factors on the formation of hydrogeological conditions in the salt dome region. Besides, the prognosis of saline water migration from the caprock to the exploited aquifer was made. The model...
In multilayered aquifer systems establishing renewable resources for individual aquifers is a compound problem. The renewable-ness coming mainly from the effective infiltration is taking place directly in the first layer. However the part of these waters indirectly is powering deeper layers as a result of soaking through by semi permeable series dividing aquifers. In the article, on the basis of the...
The article describes an experiment involving pumping of groundwater from specific sections of the aquifer with a packer. The aim of the experiment was to identify the vertical differentiation of groundwater chemistry of the Wielkopolska Buried Valley Aquifer near Joanka well-field in order to explain the reasons for the occurrence of "brown water”. The research shows significant vertical and...
Proper management of groundwater systems requires reliable assessment of its resources, particularly specification of spatial distribution and rates of recharge. Estimation of groundwater recharge based on measured water-table shape may be classified as an example of the “inverse problem”. Using “noisy” data, what is the typical case where measurement are discussed, leads to numerical instability...
Laboratory investigations of an ion migration through a ground sample were carried out. The experiments were conducted with one kind of natural ground (semi-coarse sand) and with one solution containing two kinds of tracers. Chloride ions were used as a passive tracer, while lithium ions were applied as an active tracer. The experiments were performed by means of three various size filtration columns...
The paper presents problems related to data availability for the ground water flow modeling in the region of the Bełchatów lignite mine. The U.S. Geological Survey’s program MODFLOW was used to reconstruct past and to present the existing conditions in the aquifers within the Bełchatów lignite mine influence. Ground water and surface water monitoring system which enables to assess changes of hydrodynamical...
This report presents results of modelling assessment investigations within renewal of plejstocene hurried valley groundwater flow system, based on the case study concerning groundwater intake of Zduny valley in Krotoszyn region. This investigation was performed using data concerning exploitation and long term observations of the water table, from the year 1950 till 2004. In a result of undertaken...
Groundwaters which occur at a deep depth of Devonian formations have a high temperature (42-54°C) and character of brine (M=89,19-167,84 g/dm3). Filtration parameters and groundwater recharge are weakly recognized. Measurements of confined groundwater surface led to errors because these waters have variable density. In this conditions only reduction of measure groundwater pressure permit to calculate...
The investigations were conducted to establish an influence of the waste disposal in Jelcz-Laskowice on groundwater. The measurements in the local monitoring network coinciding with other field work let to develop a conceptual model of local groundwater flow system. The next crucial step was to create a numerical model using finite difference MODFLOW solution basing on conceptual model setup in a...
Groundwater flow in river valley aquifer is shaped by stresses, which intensity is variable during time. In this case high accuracy of mathematical model demands calculations for transient flow. In this convention was executed model of groundwater flow for the part of the Vistula river valley (central Poland). Aquifer is built of sandily-gravelly sediments of high permeability, which thickness arrives...
Insufficient recognition of hydrogeological conditions in geothermal waters basins gives abilities to estimate of disposable and admissible resources quantity using only mathematical modelling method. The best results can be found performing simulation on regional model. Further on the local model optimize exploitation conditions and estabilish quantity of admissible volume of extracted groundwater.
A MIKE SHE water cycle model area covers a land part and a sea part. The land part includes the coastal zone until ground elevation about 160 m. The sea part includes Gdansk Bay until depth about 40 m. The modeling water cycle includes following components: saturated zone (8 layers), overland flow, rivers, and drainage systems (on depression area of Vistula River Delta). The model was calibrated in...
Pyrite oxidation is an important process controlling groundwater composition, but little is known about the conceptualization of this mechanism for the modelling purposes. Few examples of analytical calculations and numerical simulations have been presented in the paper. The examples concern the processes of pyrite oxidation by oxygen and nitrate both in unsaturated and saturated zones in case when...
Model was built of the exploitation region (RE) Kielce, as six layer hydrogeological numerical model with area 130,39 km2. Calculation was performed using Visual MODFLOV Pro ver. 3.1 The main task was to reconstruct the ground- water flow, determine the water resources budget and prepare transport model in an area of a local source of contamination (aromatic hydrocarbons). The regional model was divided...
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