The study attempted to assess the influence of filtration stream and hydraulic gradient in hyporheic zone on distribution water crowfoot (Ranunculus sect. Batrachium) common temperate lowland river type two European ecoregions: (14) Central Plains (16) Eastern Plains. A novel filtrometer a meter were employed for flow measurements at 24 sites distributed throughout Europe between 2017 2019. At majority sites, zones covered with Ranunculus vegetation found be dominated by groundwater...

Abstract The Moszczenica is a lowland river, which third-order river with length of 55 km; it flows into the Bzura River in central Poland. objective this study was to evaluate two important factors exchange between surface water and groundwater hyporheic zone: considerable change flow conditions various origins riverbed sections, natural artificial. To identify spatial variation hydraulic gradient zone gradientmeter applied. measurements show that at low stages, upwelling dominant, an...

Soil erosion by water is influenced a major morphogenetic factor – precipitation. Surface runoff, initiated rainfall, plays key role in this process. This article addresses the effects of rainfall intensity and soil moisture on through series simulations different duration. The implementation measurements at research station located Różany Stream catchment Poznań made it possible to study entire balance within slope, including precipitation, evaporation, surface runoff infiltration. included...

Data to the models of migration pollutants in aquifers are obtained primarily through laboratory column tests. One tools support experiment planning and interpretation is sensitivity analysis. The analysis facilitates identifying output-input relationship particular models, which, case tests, involves determining dependence shape a tracer breakthrough curve on modeled processes introduced transport sorption parameter values. This article presents for conservative tracer, which subject...

In column tests, the description of pollutant migration by means single sorption models sometimes proves insufficient. If equilibrium and nonequilibrium occur concurrently during in column, then hybrid (two-site) are more effective terms transport description. This article presents sensitivity analysis results for six models. The authors identified a dependence reactive tracer breakthrough curve shape on parameter values. applied set pulse descriptors allowed quantitative comparison...

Abstract At present, concentrations of pharmaceuticals in surface and ground waters are low; however, even low certain substances may prove very harmful. One such pharmaceutical drugs is diclofenac, a popular non-steroidal anti-inflammatory drug (NSAID). For this reason, it important to determine its mobility groundwater estimate parameters migration. Authors conducted column tests for two porous media: an artificial one, consisting glass granules, natural i.e., sandur sand obtained from...

The motivation for this paper is the practical problem of interpreting bi-exponential rate-of-rise curves that are observed during many field piezometric tests. In authors' previous study, a laboratory W-tube system water flow through two samples sand was introduced with an adequate mathematical model. desired character obtained by placing different in separate but connected columns. present paper, so-called inverse solved. optimization procedure applied order to jointly estimate pair...

The aim of this paper is to study diurnal fluctuations the water level in streams draining headwaters and identify controlling factors. fieldwork was carried out Gryżynka River catchment, western Poland. levels three into via a group springs were monitored years 2011–2014. Changes pressure temperature recorded by automatic sensors – Schlumberger MiniDiver type. Simultaneously, Barodiver type used record air atmospheric pressure, as it necessary adjust data collected MiniDivers calculate...

Mathematical modelling of the migration pollutants in groundwater environment requires knowledge values transport and sorption parameters. The aim this study was 1) to determine advection, dispersion parameters selected tracers that are transported through a porous medium, 2) verify applied estimation procedure.The authors examined solution containing conservative reactive (chloride, nitrate, lithium ammonium ions) sample medium sand. soil for column test taken from an aquifer near Tursko...

In the face of ongoing climate change, changes in precipitation patterns are observed. More and more often, rainfall is characterized by high intensity short duration. Such poses a threat to urban areas as it may generate flash floods. As result intense on impermeable surfaces, surface runoff accumulates capacity storm sewer system exceeded. The aim presented research was identify dynamics depending intensity, type land cover soil moisture conditions. It carried out series field experiments...