Hydrogeological Issues of Riverbank Filtration — A Review

Hoehn, E.

doi:10.1007/978-94-010-0479-4_2

Cited by 13 publications

(12 citation statements)

References 46 publications

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“…Hoehn [32] found specific infiltration rates for various rivers in Switzerland to be between q = 0.05 m 3 m −2 day −1 (Töss) and q = 3 m 3 m −2 day −1 (Rhine). The specific infiltration rates between S1 and G1 in the River Rhone of 0.02 m 3 m −2 day −1 < q < 0.1 m 3 m −2 day −1 ( Table 2) are hence very low.…”

Section: Tracer Hydrologymentioning

confidence: 98%

“…Young infiltrating groundwater, however, reflects these changes. The amplitude and the retardation of temperature minima or maxima with respect to the river are used to characterize the infiltration process [32,62].…”

Section: Interpretation Of Datamentioning

confidence: 99%

“…To corroborate the small values of hydraulic conductivity of the riverbed, the value for the groundwater flow velocity v a in [m s −1 ] in Darcy's Law was transformed to the infiltration rate per unit area of riverbed q [m 3 m −2 day −1 ] by multiplying v a by the effective porosity n [32]:…”

Section: Tracer Hydrologymentioning

confidence: 99%

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Hydropower production and river rehabilitation: A case study on an alpine river

Fette

Weber

Peter

et al. 2007

Environ Model Assess

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Despite the numerous benefits of hydropower production, this renewable energy source can have serious negative consequences on the environment. For example, dams act as barriers for the longitudinal migration of organisms and transport of particulate matter. Accelerated siltation processes in the receiving river reduce the vertical connectivity between river and groundwater. Hydropeaks, caused by short-term changes in hydropower operation, result in a negative impact on both habitat and organisms, especially during winter months when natural discharge is low and almost constant. In this study, we report the current deficits present in the River Rhone from two different scientific perspectives -fish ecology and hydrology. Potential rehabilitation solutions in synergy with flood protection measures are discussed. We focus on the effects of hydropeaking in relation to longitudinal and vertical dimensions and discuss local river widening as a potential rehabilitation tool. The fish fauna in the Rhone is characterized by a highly unnatural structure (low diversity, impaired age distribution). A high correlation between fish biomass and monotonous morphology (poor cover availability) was established. Tracer hydrology provided further details about the reduced permeability of the riverbank, revealing a high degree of siltation with K values of about 4.7 × 10 −6 m s −1 .Improving the hydrologic situation is therefore essential for the successful rehabilitation of the Rhone River. To this end, hydropeaks in the river reaches must be attenuated. This can be realized by a combination of different hard technical and soft operational measures such as retention reservoirs or slower up and down ramping of turbines.

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Section: Tracer Hydrologymentioning

confidence: 98%

Section: Interpretation Of Datamentioning

confidence: 99%

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Hydropower production and river rehabilitation: A case study on an alpine river

Fette

Weber

Peter

et al. 2007

Environ Model Assess

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“…During floods, these layers are eroded quickly, and both K and q increase (Schälchli, 1993). Hoehn (2002) compiled values of q between 0.05 and 4 m/day from direct measurements in coarse-grained beds of losing Alpine rivers. 2.1 One-dimensional analysis of heat and solute transport of infiltrating river water Heat transfer in granular material is mainly characterized by convection and conduction/dispersion.…”

Section: Groundwater Flow Rates and Temperatures Of Infiltrating Rivementioning

confidence: 99%

Assessing hyporheic zone dynamics in two alluvial flood plains of the Southern Alps using water temperature and tracers

Hoehn¹,

Cirpka²

2006

Preprint

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Abstract. Water temperature can be used as a tracer for the interaction between river water and groundwater, interpreting time shifts in temperature signals as retarded travel times. The water temperature fluctuates on different time scales, the most pronounced of which are the seasonal and diurnal ones. While seasonal fluctuations can be found in any type of shallow groundwater, high-frequency components are more typical for freshly infiltrated river water, or hyporheic groundwater, and are thus better suited for evaluating the travel time of the youngest groundwater component in alluvial aquifer systems. We present temperature time series collected at two sites in the alpine floodplain aquifers of the river Brenno in Southern Switzerland. At the first site, we determine apparent travel times of temperature for both the seasonal and high-frequency components of the temperature signals in several wells. The seasonal signal appears to travel more slowly, indicating a mixture of older and younger groundwater components, which is confirmed by sulphate measurements. The travel times of the high-frequency component qualitatively agree with the groundwater age derived from radon concentrations, which exclusively reflects young water components. Directly after minor floods, the amplitude of temperature fluctuations in an observation well nearby the river is the highest. Within a week, the riverbed is being clogged, leading to stronger attenuation of the temperature fluctuations in the observation well. At the second site, very fast infiltration to depths of 1.9m under the riverbed could be inferred from the time shift of the diurnal temperature signal.

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“…To address the issue of pollutant transfer, it is common to use natural or artificial tracing methods. In particular, the stable isotopes of the water molecule ( 2 H, 18 O) have many applications, allowing a better understanding of hydrosystems. They are used to estimate the recharge, to know the origin of water, the mixing processes and the transit times [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction

Poulain¹,

Marc²,

Gillon³

et al. 2021

Water

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The Barthelasse alluvial aquifer is used to supply water to 180,000 inhabitants. The pumping field is located less than 200 m from the Rhône and is 100% fed by water from the Rhône, which makes it particularly vulnerable to any pollution from the Rhône. Between the Rhône and the pumping field is a Girardon unit, an arrangement that can be found regularly along the banks of the lower and middle reaches of the Rhône, and whose role is to stabilise the banks (alluvial deposits) and to facilitate river navigation. In order to know the transfer times between the Rhône and the pumping field, fortnightly monitoring was carried out over a hydrological year, as well as hourly monitoring during a flood in the winter of 2019. The Rhône shows a cyclicality in its isotopic signature with enrichment in heavy isotopes during the winter period, particularly during floods, and a depletion during the summer period. This variation is found well within the associated alluvial aquifer. The application of LPMs models showed that the average transfer time between the Rhône and the Girardon unit was 20 days and 50 days between the Rhône and the Barthelasse pumping. This study highlighted the importance of using several sampling frequencies to consider the diversity of hydrological situations. For the Rhône, event-based monitoring (flooding) proved to be relevant to account for isotopic variability throughout the year. This work also highlighted the impact of the disruption of hydraulic exchanges between the river and the water table caused by the presence of the Girardon unit in terms of the propagation of contaminants.

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Hydrogeological Issues of Riverbank Filtration — A Review

Cited by 13 publications

References 46 publications

Hydropower production and river rehabilitation: A case study on an alpine river

Hydropower production and river rehabilitation: A case study on an alpine river

Assessing hyporheic zone dynamics in two alluvial flood plains of the Southern Alps using water temperature and tracers

Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction

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