Quantifying Hydrologic Interactions between Streams and Their Subsurface Hyporheic Zones

Harvey, Judson W.; Wagner, Brian J.

doi:10.1016/b978-012389845-6/50002-8

Cited by 321 publications

(507 citation statements)

References 54 publications

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“…We applied a hyporheic exchange rate of 0.036 h À 1 (10 À 5 s À 1 ). Both hyporheic area and exchange rate are within typically observed ranges for studies using the transient storage model 28 .…”

Section: Methodssupporting

confidence: 62%

Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites

et al. 2015

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Existing regulatory frameworks for aquatic pollutants in the United States are idealized, often lacking mechanisms to account for contaminants characterized by (1) bioactivity of both the parent and transformation products and (2) reversible transformations (that is, metastable products) driven by chemical or physical heterogeneities. Here, we modelled a newly discovered product-to-parent reversion pathway for trenbolone acetate (TBA) metabolites. We show increased exposure to the primary metabolite, 17a-trenbolone (17a-TBOH), and elevated concentrations of the still-bioactive primary photoproduct hydroxylated 17a-TBOH, produced via phototransformation and then converted back to 17a-trenbolone in perpetually dark hyporheic zones that exchange continuously with surface water photic zones. The increased persistence equates to a greater potential hazard from parent-product joint bioactivity at locations and times when reversion is a dominant trenbolone fate pathway. Our study highlights uncertainties and vulnerabilities with current paradigms in risk characterization.

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Section: Methodssupporting

confidence: 62%

Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites

et al. 2015

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“…There is also a need for further information on the size of hyporheic zones and the rate of hyporheic exchange in different types of rivers. Modeling of breakthrough curves from short-term injected tracers is the most commonly used method for characterizing the magnitude of storage zones [Harvey and Wagner, 2000], but this method does not distinguish between hyporheic zone storage and storage in slack water pools within the river channel. For radon, this distinction is critical.…”

Section: Discussionmentioning

confidence: 99%

Quantifying groundwater discharge to Cockburn River, southeastern Australia, using dissolved gas tracers ²²²Rn and SF₆

Cook

Lamontagne

Berhane

et al. 2006

Water Resources Research

168

215

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Groundwater discharge to the Cockburn River, southeast Australia, has been estimated from comparison of natural 222Rn activities in groundwater and river water, interpreted using a numerical flow model that simulates longitudinal radon activities as a function of groundwater inflow, hyporheic exchange, evaporation, gas exchange with the atmosphere, and radioactive decay. An injection of SF6 into the river to estimate the gas transfer velocity assisted in constraining the model. Previous estimates of groundwater inflow using 222Rn activities have not considered possible input of radon due to exchange between river water and water in the hyporheic zone beneath the streambed. In this paper, radon input due to hyporheic exchange is estimated from measurements of radon production by hyporheic zone sediments and rates of water exchange between the river and the hyporheic zone. Total groundwater inflow to the Cockburn River is estimated to be 18500 m3/d, although failure to consider hyporheic exchange would cause overestimation of the volume of groundwater inflow by approximately 70%.

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“…In addition to river restoration structures regulating surface water hydrodynamics such as super-elevation, shear, and vortices [Zhou and Endreny, 2012], the river restoration structure also regulates the mixing of surface water and groundwater in a process called hyporheic exchange [Kasahara and Hill, 2006]. The restoration structures change water surface profiles, near bed velocities, and substrate permeability, and these factors contribute to hyporheic exchange and create a unique mixing of light, temperature, oxygen, carbon, and nutrients in the subsurface hyporheic zone [Harvey and Wagner, 2000]. Because of these distinct physical and chemical gradients, the hyporheic zone is a valued ecological niche providing habitat for benthic and interstitial organisms, spawning grounds for certain species of fish, a rooting zone for aquatic plants, as well as a set of nutrient transformation processes regulating water quality [Stanford and Ward, 1988;Gibert et al, 1994].…”

Section: Introductionmentioning

confidence: 99%

Reshaping of the hyporheic zone beneath river restoration structures: Flume and hydrodynamic experiments

Zhou

Endreny

2013

Water Resources Research

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[1] In-channel stream restoration structures readjust surface water hydraulics, streambed pressure, and subsurface hyporheic exchange characteristics. In this study, we conducted flume experiments (pool-riffle amplitude of 0.03 m and wavelengths of 0.5 m) and computational fluid dynamic (CFD) simulations to quantify how restoration structures impacted hyporheic penetration depth, D p , and hyporheic vertical discharge rate, Q v . Restoration structures were channel-spanning vanes with subsurface footers placed in the gravel bed at each riffle. Hyporheic vertical discharge rate was estimated by analyzing solute concentration decay data, and maximum hyporheic penetration depth was measured as the interface between hyporheic water and groundwater using dye tracing experiments. The CFD was verified with literature-based flume hydraulic data and with D p and Q z observations, and the CFD was then used to document how D p and Q z varied with flume discharge, Q, ranging from 1 to 15 L/s (3E þ 03 < Re < 5E þ 04). Flume experiments and CFD simulations showed that restoration structures increased Q z and decreased D p , creating a shallower but higher flux hyporheic zone. Q z had a positive linear relationship with Q, while D p initially grew as Q increased, but then shrunk when a hydraulic jump with low streambed pressured formed downstream of the structure. The restoration structures created counter-acting forces of increased downwelling head due to backwater effects, and increased upwelling due to low streambed pressure and standing waves downstream of the structure.Citation: Zhou, T., and T. A. Endreny (2013), Reshaping of the hyporheic zone beneath river restoration structures: Flume and hydrodynamic experiments, Water Resour. Res., 49, 5009-5020,

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Quantifying Hydrologic Interactions between Streams and Their Subsurface Hyporheic Zones

Cited by 321 publications

References 54 publications

Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites

Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites

Quantifying groundwater discharge to Cockburn River, southeastern Australia, using dissolved gas tracers ²²²Rn and SF₆

Reshaping of the hyporheic zone beneath river restoration structures: Flume and hydrodynamic experiments

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Quantifying Hydrologic Interactions between Streams and Their Subsurface Hyporheic Zones

Cited by 321 publications

References 54 publications

Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites

Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites

Quantifying groundwater discharge to Cockburn River, southeastern Australia, using dissolved gas tracers 222Rn and SF6

Reshaping of the hyporheic zone beneath river restoration structures: Flume and hydrodynamic experiments

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Quantifying groundwater discharge to Cockburn River, southeastern Australia, using dissolved gas tracers ²²²Rn and SF₆