Hydrological Dynamics in River-Lake Systems
Summary
River-lake systems comprise dynamic interfaces where fluvial flows exchange water, sediment and nutrients with lentic environments. Seasonal and event-driven variations in discharge control inundation patterns, water-level fluctuations and connectivity that underpin ecological productivity and habitat diversity. Climatic drivers, notably precipitation and temperature regimes, interact with watershed characteristics to govern the timing and magnitude of river inflows. Anthropogenic interventions such as dam operation, water abstraction and land-use change modulate natural flow regimes, often leading to altered flood pulses, modified sediment transport and shifts in water quality. Advances in remote sensing, hydrodynamic modelling and in situ monitoring have illuminated spatial–temporal patterns of water exchange, the evolution of lake bathymetry and the impacts of river regulation on downstream lakes. Understanding these processes is essential for integrated water resources management, flood risk mitigation and the conservation of wetland ecosystems under a changing climate.
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Hydrological Dynamics in River-Lake Systems publication trend
The graph below shows the total number of articles in hydrological dynamics in river-lake systems across all publications each year (not limited to Nature Index journals).
Technical terms
Hydrological connectivity: The water-mediated transfer of water, solutes, sediments and biota between river channels and adjoining lakes or wetlands.
Inundation frequency: The proportion of time or number of events that a given area is submerged under water within a specified period.
Water budget: An accounting framework for quantifying the inflows, outflows and storage changes of water within a defined system.
Backflow: The reverse movement of water from a river into a connected lake or wetland, often occurring when downstream water levels exceed upstream levels.
References
- Linkage between Three Gorges Dam impacts and the dramatic recessions in China’s largest freshwater lake, Poyang Lake. Scientific Reports (2015).
- Influence of Large Reservoir Operation on Water-Levels and Flows in Reaches below Dam: Case Study of the Three Gorges Reservoir. Scientific Reports (2017).
- Lake hydrology, water quality and ecology impacts of altered river–lake interactions: advances in research on the middle Yangtze river. Hydrology Research (2016).
- Long-Term Dynamic of Poyang Lake Surface Water: A Mapping Work Based on the Google Earth Engine Cloud Platform. Remote Sensing (2019).
- Changing landscapes by damming: the Three Gorges Dam causes downstream lake shrinkage and severe droughts. Landscape Ecology (2016).
- Influence of Climate Variability and Reservoir Operation on Streamflow in the Yangtze River. Scientific Reports (2019).
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