Estimating spatial pattern of hyporheic water exchange in slack water pool
- 2 Downloads
Hyporheic zone (HZ) influences hydraulic and biogeochemical processes in and alongside streams, therefore, investigating the controlling geographic factors is beneficial for understanding the hydrological processes in HZ. Slack water pool (SWP) is an essential micro-topographic structure that has an impact on surface water and groundwater interactions in the HZ during and after high flows. However, only a few studies investigate HZ surface water and groundwater exchange in the SWP. This study used the thermal method to estimate the HZ water exchange in the SWP in a segment of the Weihe River in China during the winter season. The findings show that on the flow-direction parallel to the stream, river recharge dominates the HZ water exchange, while on the opposing flow-direction bank groundwater discharge dominates the water exchange. The water exchange in the opposing flow-direction bank is about 1.6 times of that in the flow-direction bank. The HZ water exchange is not only controlled by flow velocity but also the location and shape of the SWP. Great water exchange amount corresponds to the shape with more deformation. The maximum water exchange within the SWP is close to the river bank where the edge is relatively high. This study provides some guidelines for water resources management during flooding events.
Keywordshyporheic water exchange thermal method discharge recharge surface water-groundwater interactions
Unable to display preview. Download preview PDF.
We thank Guotao Zhang, Weiwei Jiang, Yuanyuan Wang, Ming Wen, Shaofeng Xu, and other members for assistance in fieldwork. In particular, we are grateful to the editor and two anonymous reviewers for providing numerous comments and suggestions, which helped improve this manuscript.
- Darracq A, Destouni G, Persson K et al., 2009. Quantification of advective solute travel times and mass transport through hydrological catchments. Environmental Fluid Mechanics, 10(1/2): 103–120.Google Scholar
- Dochartaigh B, MacDonald A, Archer N et al., 2012. Groundwater-surface water interaction in an upland hillslope- floodplain environment, Eddleston, Scotland, BHS 11th National Symposium, Hydrology for a Changing World, Dundee, Scotland, pp. 2012.Google Scholar
- Dunster K, 2011. Dictionary of Natural Resource Management. UBC Press.Google Scholar
- Gualtieri C, Filizola Jr N, Oliveira M et al., 2017. A field study of the confluence between Negro and Solimões rivers. Part 1: Hydrodynamics and sediment transport. Comptes Rendus Geoscience, 350(1/2): 31–42.Google Scholar
- Ianniruberto M, Trevethan M, Pinheiro A et al., 2017. A field study of the confluence between Negro and Solimões rivers. Part 2: Bed morphology and stratigraphy. Comptes Rendus Geoscience, 350(1/2): 43–54.Google Scholar
- Kasahara T, Wondzell S M, 2003. Geomorphic controls on hyporheic exchange flow in mountain streams. Water Resources Research, 39(1): SBH 3-1-SBH 3–14.Google Scholar
- Kuhlman KL, Malama B, Heath J E, 2015. Multiporosity flow in fractured low-permeability rocks. Water Resources Research, 51(2): 848–860.Google Scholar
- Kumar K N, Entekhabi D, Molini A, 2015. Hydrological extremes in hyperarid regions: A diagnostic characterization of intense precipitation over the Central Arabian Peninsula. Journal of Geophysical Research: Atmospheres, 120: 1637–1650.Google Scholar
- Nazemi A, Wheater H S, 2014. How can the uncertainty in the natural inflow regime propagate into the assessment of water resource systems? Advances in Water Resources, 63: 131–142.Google Scholar
- Prancevic J P, Lamb M P, 2015. Particle friction angles in steep mountain channels. Journal of Geophysical Research: Earth Surface, 120(2): 242–259.Google Scholar