Estimating streambed parameters for a disconnected river

Wang, Wenke; Li, Junting; Wang, Wenming; Chen, Xunhong; Cheng, Donghui; Jia, Jia

doi:10.1002/hyp.9904

Cited by 24 publications

(39 citation statements)

References 34 publications

(70 reference statements)

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“…In the experiments reported by Wang et al (), the seepage bell and the falling‐level reservoir both are 25.4 cm in diameter. The manometer with a ruler attached has a length of 0.8 m and the lower end of the manometer is at the same level as the water level in the seepage cylinder.…”

Section: Principle Of the Seepage Metermentioning

confidence: 94%

“…Wang et al () improved the B&R seepage meter with a seepage cylinder outside the seepage bell (Figure ). The seepage cylinder is 0.85 m in diameter and 1.5 m in height.…”

Section: Principle Of the Seepage Metermentioning

confidence: 99%

“…Improved B&R seepage meter from Wang et al (). The dash line at the bottom represents the interface of stream water and streambed.…”

Section: Principle Of the Seepage Metermentioning

confidence: 99%

“…The magnitude of the slope at point 1 on curve A is V s (Figure ). So the vertical seepage flux rate ( V e ) is given by Wang et al () as:

V_{e} = 2 V_{s}

…”

Section: Principle Of the Seepage Metermentioning

confidence: 99%

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Air Compressibility Effect on Bouwer and Rice Seepage Meter

Peng

Zhan

2017

Groundwater

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Measuring a disconnected streambed seepage flux using a seepage meter can give important streambed information and help understanding groundwater-surface water interaction. In this study, we provide a correction for calculating the seepage flux rate with the consideration of air compressibility inside the manometer of the Bouwer and Rice seepage meter. We notice that the effect of air compressibility in the manometer is considerably larger when more air is included in the manometer. We find that the relative error from neglecting air compressibility can be constrained within 5% if the manometer of the Bouwer and Rice seepage meter is shorter than 0.8 m and the experiment is done in a suction mode in which air is pumped out from the manometer before the start of measurement. For manometers longer than 0.8 m, the relative error will be larger than 5%. It may be over 10% if the manometer height is longer than 1.5 m and the experiment is done in a no-suction mode, in which air is not pumped out from the manometer before the start of measurement.

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Section: Principle Of the Seepage Metermentioning

confidence: 94%

“…Wang et al () improved the B&R seepage meter with a seepage cylinder outside the seepage bell (Figure ). The seepage cylinder is 0.85 m in diameter and 1.5 m in height.…”

Section: Principle Of the Seepage Metermentioning

confidence: 99%

“…Improved B&R seepage meter from Wang et al (). The dash line at the bottom represents the interface of stream water and streambed.…”

Section: Principle Of the Seepage Metermentioning

confidence: 99%

“…The magnitude of the slope at point 1 on curve A is V s (Figure ). So the vertical seepage flux rate ( V e ) is given by Wang et al () as:

V_{e} = 2 V_{s}

…”

Section: Principle Of the Seepage Metermentioning

confidence: 99%

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Air Compressibility Effect on Bouwer and Rice Seepage Meter

Peng

Zhan

2017

Groundwater

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“…Park [6] evaluated the interference and ratio of river water at riverbank filtration pumping wells and claimed that well interference is caused not only by groundwater drawdown but also by pipe headloss, which depends on the flow rate. Wang [7] set up a three-dimensional mathematical model and analyzed the effects of river width, partial penetration, and the permeability of riverbed sediments on groundwater recharges. The results showed that riverside pumping may cause groundwater to flow beneath the partially penetrating river, and that the river width, penetration, and riverbed permeability obviously influence flows from the partially penetrating river and constant-head boundaries.…”

Section: Introductionmentioning

confidence: 99%

Drawdown changes affected by flow rate and location of pumping wells near a river

Chen

Shu

2016

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Riverside groundwater exploitation is one of the main means of utilizing groundwater resources. This paper describes the impact of drawdown conditions with changes in the river flow and pumping well locations, and analyzes the interaction between the groundwater and surface water. Based on long-term hydrological gauging data, abundant hydrogeological test data, and the numerical simulation results for a typical well field of the Qinbei Power Plant, this paper presents three different cases of pumping well locations and four different cases of river flow rates. Finally, the abovementioned cases are integrated into 12 extraction groups and the drawdown conditions are calculated for each group. The results show that, for a given set of flow rate conditions, a location set in a recharge zone exhibited the maximum drawdown, while a location in a transition zone had the second-largest drawdown, and a location in a discharge zone had the minimum drawdown. In addition, assuming the same locations for the pumping wells, the drawdown change from small to large corresponded to 100%, 75%, 50%, and 25% of the original flow. This paper provides a foundation for future study of the calculation of riverside groundwater exploration with changes in the flow rate and well locations.

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A surface and ground‐water integrated investigation of streamflow drying up in semi‐arid regions

Chen

et al. 2023

Hydrological Processes

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Groundwater exploitations in semi-arid regions result in significant declines of groundwater levels and streamflow and even trigger seasonal streamflow drying up, which may bring adverse impacts on riparian ecosystems. It is critical to explore future streamflow changes caused by variable climate scenarios and groundwater exploitation intensities; however, a comprehensive assessment of the streamflow drying up frequency remains lacking. Furthermore, the thresholds of controlling factors beyond which streamflow drying up occurs have rarely been explored. Here we develop an integrated surface water-groundwater model for the Taoer River Basin (TRB), a typical semi-arid watershed in northeast China. We apply the model to multiple future scenarios to reveal the frequency of potential streamflow drying up and explore the thresholds of controlling factors of streamflow drying up based on a decision tree method. We find that the groundwater level in the lower region of the TRB (LTRB) is hard to recover to the riverbed elevation and the streamflow drying up frequency is still high unless the groundwater exploitation is reduced by 50%. However, this leads to a competition between the ecological and economic objectives. Our results also show that the streamflow drying up frequency in the LTRB is very sensitive to the upstream water inflow that can be regulated through the reservoir operation or inter-basin water diversion, indicating the importance of a basin scale strategic management. The findings of this paper can help policy makers sustainably exploit water resources in semi-arid regions.

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Estimating streambed parameters for a disconnected river

Cited by 24 publications

References 34 publications

Air Compressibility Effect on Bouwer and Rice Seepage Meter

Air Compressibility Effect on Bouwer and Rice Seepage Meter

Drawdown changes affected by flow rate and location of pumping wells near a river

A surface and ground‐water integrated investigation of streamflow drying up in semi‐arid regions

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