Conducting Slug Tests in Mini‐Piezometers

Fritz, Bradley G.; Mackley, Rob D.; Arntzen, Evan

doi:10.1111/gwat.12335

Cited by 5 publications

(7 citation statements)

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“…Given the relationships amongst sediment texture and hydro‐biogeochemical properties, and the distinct distributions of sediment texture with respect to the defined facies, this study provides a useful framework for assigning heterogeneous properties that will be used in numerical simulations of hyporheic exchange and biogeochemical processes. Compared with previous work of mapping permeability using sediment texture (Kiel & Cardenas, ), the approach described here is of much higher resolution and compares well with the extensive datasets of substrate size and hydraulic conductivity measurements (Anglin et al, ; Arntzen et al, ; Fritz et al, ; Fritz & Arntzen, ).…”

Section: Discussionsupporting

confidence: 50%

“…As a starting point of such property assignments, we produced a hydraulic conductivity map, as shown in Figure , based on the integrated relationships amongst the shear stress facies, substrate size, and hydraulic conductivity. The conversion from substrate size to hydraulic conductivity was similar to Kiel and Cardenas (), with the Shepherd's formula adopted, K (cm/s) = 1.19X10 −6 D 50 (cm)^2, where the coefficients were calibrated based on summary statistics from a big dataset along the Hanford Reach (see Anglin et al, ; Arntzen et al, ; Fritz et al, ; Fritz & Arntzen, ). This demonstrates the use of the mapped facies for assigning HBGC properties to the numerical grids for modelling purposes.…”

Section: Resultsmentioning

confidence: 99%

“…In our study area along the Columbia River, on the other hand, nearly 12,000 locations were sampled for riverbed substrate size measurements over a 59 river kilometre reach, which serves as a great bridge to enable a complete mapping of permeability over the entire Hanford reach. A number of field experiments were also conducted to measure hydraulic conductivity or permeability along the reach (Arntzen et al, ; Fritz & Arntzen, ; Fritz, Mackley, & Arntzen, ). The substrate size and hydraulic conductivity datasets enable us to derive realistic and representative coefficients for relationships linking grain size and permeability/conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations

Hou

Scheibe

Murray

et al. 2019

Hydrological Processes

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In the Hanford Reach of the Columbia River, a thin layer of recent alluvium overlies the sedimentary formations that comprise the unconfined groundwater aquifer.Experimental and modelling studies have demonstrated that this alluvial layer exerts significant control on the exchange of groundwater and surface water (hydrologic exchange flux), and is associated with elevated levels of biogeochemical activity. This

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Section: Discussionsupporting

confidence: 50%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations

Hou

Scheibe

Murray

et al. 2019

Hydrological Processes

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“…groundwater) as reservoirs where inflows or outflows are specified, to highly complex integrated models that have a more realistic physical coupling between surface water and groundwater. MODFLOW (Harbaugh, 2005) is the most commonly used numerical model to simulate surface water-groundwater interactions (Furman, 2008;Barlow and Harbaugh, 2006). As pointed out by Wohling et al (2018), MODFLOW is considered to be a good compromise between integrated and conceptual modelling approaches.…”

Section: Modellingmentioning

confidence: 99%

A review of methods for measuring groundwater–surface water exchange in braided rivers

Coluccio

Morgan

2019

Hydrol. Earth Syst. Sci.

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Abstract. Braided rivers, while uncommon internationally, are significant in terms of their unique ecosystems and as vital freshwater resources at locations where they occur. With an increasing awareness of the connected nature of surface water and groundwater, there have been many studies examining groundwater–surface water exchange in various types of waterbodies, but significantly less research has been conducted in braided rivers. Thus, there is currently limited understanding of how characteristics unique to braided rivers, such as channel shifting, expanding and narrowing margins, and a high degree of heterogeneity affect groundwater–surface water flow paths. This article provides an overview of characteristics specific to braided rivers, including a map showing the regions where braided rivers are mainly found at the global scale: Alaska, Canada, the Japanese and European Alps, the Himalayas, Russia, and New Zealand. To the authors' knowledge, this is the first map of its kind. This is followed by a review of prior studies that have investigated groundwater–surface water interactions in braided rivers and their associated aquifers. The various methods used to characterise these processes are discussed with emphasis on their effectiveness in achieving the studies' objectives and their applicability in braided rivers. We also discuss additional methods that appear promising to apply in braided river settings. The aim is to provide guidance on methodologies most suitable for future work in braided rivers. In many cases, previous studies found a multi-method approach useful to produce more robust results and compare data collected at various scales. Given the challenges of working directly in braided rivers, there is considerable scope for the increased use of remote sensing techniques. There is also opportunity for new approaches to modelling braided rivers using integrated techniques that incorporate the complex river bed terrain and geomorphology of braided rivers explicitly. We also identify a critical need to improve the conceptual understanding of hyporheic exchange in braided rivers, rates of recharge to and from braided rivers, and historical patterns of dry and low-flow periods in these rivers.

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“…They are easy and quick to install in most locations, and the analysis of their measurements is generally straightforward (Brodie et al, 2007). They can be used in small-scale applications and in detailed surveys in heterogeneous environments (Fritz et al, 2016). However, measurements at a study site must be taken at the same time to be representative of similar flow conditions (Kalbus et al, 2006).…”

Section: Advantages and Limitationsmentioning

confidence: 99%

A review of methods for measuring groundwater–surface water exchange in braided rivers

Coluccio¹,

Morgan²

2018

Preprint

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Abstract. Braided rivers, while uncommon internationally, are significant in terms of their unique ecosystems and as vital freshwater resources at locations where they occur. With an increasing awareness of the connected nature of surface water and groundwater, there have been many studies examining groundwater–surface water exchange in various types of waterbodies, but significantly less research has been conducted in braided rivers. Thus, there is currently limited understanding of how characteristics unique to braided rivers, such as channel shifting; expanding and narrowing margins; and a high degree of heterogeneity affect groundwater–surface water flow paths. This article provides an overview of characteristics specific to braided rivers, including a map showing the regions where braided rivers are concentrated at the global scale: Alaska, Canada, the Japanese and European Alps, the Himalayas and New Zealand. To the authors' knowledge, this is the first map of its kind. This is followed by a review of prior studies that have investigated groundwater-surface water interactions in braided rivers and their associated aquifers. The various methods used to characterise these processes are discussed with emphasis on their effectiveness in achieving the studies' objectives and their applicability in braided rivers. The aim is to provide guidance on methodologies most suitable for future work in braided rivers. In many cases, previous studies found a multi-method approach useful to produce more robust results and compare data collected at various scales. Ultimately, the most appropriate method(s) for a given study will be based on several factors, including the scale of interactions that need to be observed; site-specific characteristics; budget; and time available. Given these considerations, we conclude that it is best to begin braided river studies with broad-scale methods such as airborne thermal imaging, differential flow gauging or tracer analysis and then focus the investigation using finer scale techniques such as groundwater well observations or temperature sensors. Given the challenges of working directly in braided rivers, there is considerable scope for the increased use of remote sensing techniques and geophysics. There is also opportunity for new approaches to modelling braided rivers using integrated techniques that incorporate the often-complex river bed terrain and geomorphology of braided rivers explicitly. We also identify a critical need to improve understanding of the role of hyporheic exchange in braided rivers; rates of recharge to/from braided rivers; and historical patterns of dry and low-flow periods in these rivers.

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Conducting Slug Tests in Mini‐Piezometers

Cited by 5 publications

References 23 publications

Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations

Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations

A review of methods for measuring groundwater–surface water exchange in braided rivers

A review of methods for measuring groundwater–surface water exchange in braided rivers

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