A new method for mapping variability in vertical seepage flux in streambeds

Chen, Xunhong; Song, Jinxi; Cheng, Cheng; Wang, Biao; Lackey, Susan Olafsen

doi:10.1007/s10040-008-0384-0

Cited by 41 publications

(37 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chen et al (2009) noted that the positive and negative VHG values could occur between two locations only several meters apart for the streambed sediments in the Elkhorn River of Nebraska, which indicates the significant presence of downward and upward flux at water-streambed interface. Similar findings were reported by Leek et al (2009).…”

Section: Streambed K V Values Between Schuyler and Ashland In The Plamentioning

confidence: 95%

Statistical Distribution of Streambed Vertical Hydraulic Conductivity along the Platte River, Nebraska

Cheng

Song

Chen

et al. 2010

Water Resour Manage

Self Cite

View full text Add to dashboard Cite

Streambed vertical hydraulic conductivity (K v ) plays an important role in understanding and quantifying the stream-aquifer interactions. While several researchers have discussed the spatial variability of streambed horizontal hydraulic conductivity or K v at one or several close-located sites in a river, they did not develop any statistical distribution analysis of streambed K v at distant sites along a large river. In this paper, the statistical distribution and spatial variation of streambed K v at 18 test sites in a 300-km reach of the Platte River in Nebraska are presented. Insitu permeameter tests using the falling-head method were carried out to calculate the streambed K v values. Fine-grained sediments transported by two tributaries, the Loup River and the Elkhorn River, to the Platte River appear to result in lower streambed K v values downstream of the confluences between the Platte River and the tributaries. The streambed K v values were found to be normally distributed at nearly each test site. When the correlated K v values were eliminated from the grid sampling plots, the remaining independent sub-datasets of streambed K v values were still in normal distribution at each test site. Furthermore, the combined streambed K v values upstream of the first confluence between the Platte River and the Loup River was normally distributed, which may be due to the lack of tributaries in-between and thus streambed sediments were well distributed in this reach and belonged to a single population of hydraulic conductivity values. In contrast, the combined dataset of all measurements conducted downstream of this confluence was no longer in normal distribution, presumably as a result of the mixing of different sediment sources.

show abstract

Section: Streambed K V Values Between Schuyler and Ashland In The Plamentioning

confidence: 95%

Statistical Distribution of Streambed Vertical Hydraulic Conductivity along the Platte River, Nebraska

Cheng

Song

Chen

et al. 2010

Water Resour Manage

Self Cite

View full text Add to dashboard Cite

show abstract

“…TIR cameras sense and quantify surface infrared (heat) radiation and are increasingly being used to evaluate aquatic systems efficiently on large scales (Chen et al, 2009;Deitchman and Loheide, 2009;Dugdale et al, 2016;Handcock et al, 2012;Hare et al, 2015), particularly at large sites, or sites where in situ measurements are not possible. The hand-held TIR survey was conducted to both expand the thermal survey and to compare this method to the FO-DTS data.…”

Section: Infrared Surveysmentioning

confidence: 99%

Hydrogeological controls on spatial patterns of groundwater discharge in peatlands

Hare

Boutt

Clement

et al. 2017

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Peatland environments provide important ecosystem services including water and carbon storage, nutrient processing and retention, and wildlife habitat. However, these systems and the services they provide have been degraded through historical anthropogenic agricultural conversion and dewatering practices. Effective wetland restoration requires incorporating site hydrology and understanding groundwater discharge spatial patterns. Groundwater discharge maintains wetland ecosystems by providing relatively stable hydrologic conditions, nutrient inputs, and thermal buffering important for ecological structure and function; however, a comprehensive site-specific evaluation is rarely feasible for such resource-constrained projects. An improved process-based understanding of groundwater discharge in peatlands may help guide ecological restoration design without the need for invasive methodologies and detailed sitespecific investigation.Here we examine a kettle-hole peatland in southeast Massachusetts historically modified for commercial cranberry farming. During the time of our investigation, a large process-based ecological restoration project was in the assessment and design phases. To gain insight into the drivers of site hydrology, we evaluated the spatial patterning of groundwater discharge and the subsurface structure of the peatland complex using heat-tracing methods and groundpenetrating radar. Our results illustrate that two groundwater discharge processes contribute to the peatland hydrologic system: diffuse lower-flux marginal matrix seepage and discrete higher-flux preferential-flow-path seepage. Both types of groundwater discharge develop through interactions with subsurface peatland basin structure, often where the basin slope is at a high angle to the regional groundwater gradient. These field observations indicate strong correlation between subsurface structures and surficial groundwater discharge. Understanding these general patterns may allow resource managers to more efficiently predict and locate groundwater seepage, confirm these using remote sensing technologies, and incorporate this information into restoration design for these critical ecosystems.

show abstract

“…(), Calver () and Chen et al . (). These techniques include grain‐size analysis of streambed sediments, slug tests, hydrometric measurements, direct measurements of streamflow increments (commonly called a seepage run), tracer techniques and seepage flux measurements using seepage meters (Cey et al .…”

Section: Introductionmentioning

confidence: 97%

Estimating streambed parameters for a disconnected river

Wang

et al. 2013

Hydrological Processes

Self Cite

View full text Add to dashboard Cite

Evaluation of stream–aquifer interaction and water balance for a catchment often requires specific information on streambed parameters, such as streambed hydraulic conductivity, seepage flux across the streambed and so on. This paper describes a simple, inexpensive instrument that is used to measure these streambed parameters under the condition of a stream disconnected from groundwater. Our method includes a seepage cylinder for simulation of river water depth. The proposed method was applied to estimate the vertical hydraulic conductivity of a streambed and the changes in vertical seepage rate from stream to groundwater with varied stream water depth in the Manasi River of Xinjiang Uygur Autonomous Region, China. The vertical hydraulic conductivities of the streambed determined from 12 sites along the Manasi River vary from 1.01 to 29.m/day where the stream disconnects from the groundwater. The experimental results suggest that there are two kinds of relations between the vertical seepage rate and the simulated stream water depth. One is a linear relation between the two variables with low Reynolds numbers (less than 10); the other is a nonlinear relation (exponential relation) between the two variables with larger Reynolds numbers (greater than 10). This second relationship is quite different from the traditional model that usually calculates the vertical seepage rate from stream to groundwater under the condition of disconnection using a linear relation (Darcy's Law). Our results suggest that a linear relation can only be used for a limited range of river water depth. This method gives a convenient tool for rapidly estimating the streambed hydraulic conductivity and the changes in the vertical seepage rate across streambed with varied stream water depths for the case of a stream disconnected from groundwater. Copyright © 2013 John Wiley & Sons, Ltd.

show abstract

A new method for mapping variability in vertical seepage flux in streambeds

Cited by 41 publications

References 20 publications

Statistical Distribution of Streambed Vertical Hydraulic Conductivity along the Platte River, Nebraska

Statistical Distribution of Streambed Vertical Hydraulic Conductivity along the Platte River, Nebraska

Hydrogeological controls on spatial patterns of groundwater discharge in peatlands

Estimating streambed parameters for a disconnected river

Contact Info

Product

Resources

About