Search results
Nov 4, 2023 · In the context of global climate change, the frequency of watershed flooding events resulting from extreme rainfall has significantly increased. Especially at river or lake confluences, the presence of backwater effects greatly amplifies the flood risk. To investigate the influence of backwater effects on the hydraulic characteristics of rivers and lakes, this study focuses on the Dongping ...
Nov 4, 2023 · The results indicate that, compared to the working conditions without the backwater effect, the highest lake water level increased by 1.0 m and 0.1 m under severe and moderate backwater effect ...
Nov 4, 2023 · In the context of global climate change, the frequency of watershed flooding events resulting from extreme rainfall has significantly increased. Especially at river or lake confluences, the presence of backwater effects greatly amplifies the flood risk. To investigate the influence of backwater effects on the hydraulic characteristics of rivers and lakes, this study focuses on the Dongping ...
Sep 1, 2024 · Backwater is a commonly observed hydrological phenomenon at confluences, not only in tributaries of lakes and reservoirs but also in plain rivers (Li et al., 2018).The backwater effect always occurs in tributaries, where the backflow from the mainstream causes a rise in water level, a decrease in flow speed, and a change in flow direction.
of backwater effects greatly amplifies the flood risk. To investigate the influence of backwater effects on the hydraulic characteristics of rivers and lakes, this study focuses on the Dongping Lake in China. An enhanced two-dimensional hydrodynamic model was employed to simulate and analyze three different degrees of backwater effects.
Jun 28, 2019 · The model results indicate that: (a) nonuniform flow propagates upstream beyond the backwater transition that is traditionally estimated with a basic backwater length scale relationship. (b) Base-level fluctuations, especially rising, enhance the impact of nonuniform flow.
People also ask
Do backwater effects affect the hydraulic characteristics of rivers and lakes?
Does backwater effect affect lake water level?
Is there a backwater effect in watersheds?
Why is Dongping Lake affected by backwater effects?
What is the backwater effect?
How does the Yellow River water backwater effect affect the lake?
Oct 24, 2019 · This is mainly due to the backwater effect of flow confluence action at the river junction, which is consistent with the hydrodynamic characteristics observed in the former flume experiments. Actually, the backwater characteristics can be further evidenced by the profile of the longitudinal water level changes, as plotted in Fig. 10.
