Determination of Hydraulic Properties in Sloping Landscapes from Tension and Double‐Ring Infiltrometers

Bodhinayake, Waduwawatte; Cheng, Bing; Noborio, Kosuke

doi:10.2136/vzj2004.0964

Cited by 69 publications

(36 citation statements)

References 38 publications

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“…has been confirmed by Bodhinayake et al (2004), from tests performed on slopes of up to 20%. Water levels inside the cylinder were monitored using a sharply pointed electronic needle gauge mounted on a heavy laboratory stand ( Figure 2).…”

Section: Field Methodsmentioning

confidence: 61%

Bank permeability in an Australian ephemeral dry‐land stream: variation with stage resulting from mud deposition and sediment clogging

Dunkerley

2007

Earth Surf Processes Landf

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Percolation of flood waters into the bed and banks of ephemeral streams provides one of the key mechanisms responsible for transmission loss. However, there are very few published estimates of the rates at which water can enter stream-bank sediments, and little is known about the variation in bank permeability with elevation above the bed and the resulting effects on transmission loss in floods of different magnitudes. This paper presents the results of 69 field determinations of bank infiltrability made on Fowlers Creek, an ephemeral dryland stream located in arid western New South Wales, Australia. Fowlers Creek carries high concentrations of suspended sediments, which are deposited as mud drapes on the bed, banks and floodplain. Results demonstrate that infiltration rates are lowest at the base of the banks, and tend to increase steadily with elevation on the bank, even above the apparent upper limit of mud drapes. In parallel, the texture of the bank sediments (assessed from samples of the uppermost 10 cm) becomes coarser with elevation above the bed. This pattern is inferred to relate to the delivery of silts and clays into pore spaces in the bank sediments by percolating flood waters. The patterns of infiltration rate and sediment texture mapped in the field are reasoned to be the product of many clogging episodes in past flood events having different peak stages. The increase in infiltration rate and mean particle size up the banks reflects lower frequencies of submergence and clogging of the upper banks by large floods, and more frequent inundation and clogging of the lower banks by sub-bank-full flows. The stage-related changes in bank permeability provide a mechanism that can drive variations in transmission loss among floods having different peak stages and hydrograph shapes.larger; see, e.g., Coes and Pool, 2005, for data from south-eastern Arizona). Thus, the percolation of water into the bed and banks is the dominant transmission loss mechanism during the hours-to-days durations typical of flood flows in ephemeral streams, and these processes form the subject of the present paper. Infiltration and percolation are dependent upon a range of local site conditions, including the texture and hydraulic properties of the channel boundary sediments (sorting, particle sizes, porosity, permeability), features of the flow hydrograph, including the stage and duration of the flow peak and of the entire hydrograph, and the suspended sediment load carried by the flow (particle size distribution, sediment concentration). In very large river systems, such as the Darling River of inland Australia, flood waters take months to progress downstream toward terminal lake basins, and under these circumstances evapotranspiration losses presumably become an increasingly significant component of water loss. Additionally, in these very large exogenic river systems crossing low-gradient alluvial plains, the channel boundary sediments are fine textured and this restricts the seepage losses in comparison with sand and gravel bed s...

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Section: Field Methodsmentioning

confidence: 61%

Bank permeability in an Australian ephemeral dry‐land stream: variation with stage resulting from mud deposition and sediment clogging

Dunkerley

2007

Earth Surf Processes Landf

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“…The infiltrometer had an outer ring diameter of 40 cm and an inner ring diameter of 25 cm. At each test site, the infiltrometer was inserted 5 cm into the ground, and infiltration measurements were carried out as described in Bodhinayake, Si, and Noborio (), mostly reaching steady state between 25 and 60 min.…”

Section: Methodsmentioning

confidence: 99%

Does hillslope trenching enhance groundwater recharge and baseflow in the Peruvian Andes?

Somers

McKenzie

Zipper

et al. 2018

Hydrological Processes

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As Andean glaciers rapidly retreat due to climate change, the balance of groundwater and glacial meltwater contributions to stream discharge in tropical, proglacial watersheds will change, potentially increasing vulnerability of water resources. The Shullcas River Watershed, near Huancayo, Peru, is fed only partly by the rapidly receding Huaytapallana glaciers (<20% of dry season flow). To potentially increase recharge and therefore increase groundwater derived baseflow, the government and not‐for‐profit organizations have installed trenches along large swaths of hillslope in the Shullcas Watershed. Our study focuses on a nonglacierized subcatchment of the Shullcas River Watershed and has 2 objectives: (a) create a model of the Shullcas groundwater system and assess the controls on stream discharge and (b) investigate the impact of the infiltration trenches on recharge and baseflow. We first collected hydrologic data from the field including a year‐long hydrograph (2015–2016), meteorological data (2011–2016), and infiltration measurements. We use a recharge model to evaluate the impact of trenched hillslopes on infiltration and runoff processes. Finally, we use a 3‐dimensional groundwater model, calibrated to the measured dry season baseflow, to determine the impact of trenching on the catchment. Simulations show that trenched hillslopes receive approximately 3.5% more recharge, relative to precipitation, compared with unaltered hillslopes. The groundwater model indicates that because the groundwater flow system is fast and shallow, incorporating trenched hillslopes (~2% of study subcatchment area) only slightly increases baseflow in the dry season. Furthermore, the location of trenching is an important consideration: Trenching higher in the catchment (further from the river) and in flatter terrain provides more baseflow during the dry season. The results of this study may have important implications for Andean landscape management and water resources.

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“…The second major category of equations for predicting K eff from infiltration data is steady-state equations (Bodhinayake et al, 2004). Most of the plots were run long enough to achieve quasi-steady-state conditions, with total infiltration often greatly exceeding the depth of the top layer of soil.…”

Section: Plot-scale Infiltration and Hydraulic Conductivitymentioning

confidence: 99%

Heterogeneity of Infiltration Rates in Alluvial Floodplains as Measured with a Berm Infiltration Technique

2015

Trans. ASABE

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Determination of Hydraulic Properties in Sloping Landscapes from Tension and Double‐Ring Infiltrometers

Cited by 69 publications

References 38 publications

Bank permeability in an Australian ephemeral dry‐land stream: variation with stage resulting from mud deposition and sediment clogging

Bank permeability in an Australian ephemeral dry‐land stream: variation with stage resulting from mud deposition and sediment clogging

Does hillslope trenching enhance groundwater recharge and baseflow in the Peruvian Andes?

Heterogeneity of Infiltration Rates in Alluvial Floodplains as Measured with a Berm Infiltration Technique

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