scholarly journals Velocity profile, water-surface slope, and bed-material size for selected streams in Colorado

1984 ◽  
Author(s):  
J.P. Marchand ◽  
R.D. Jarrett ◽  
L.L. Jones
Keyword(s):  
Velocity Profile ◽  
Water Surface ◽  
Surface Slope ◽  
Water Surface Slope ◽  
Bed Material

Study on the Flood Volume Investigation for Medium and Small River

2012 ◽  
Vol 599 ◽  
pp. 728-731
Author(s):  
Zhong Du ◽  
Hui Xiu Wu ◽  
Zeng Chuan Dong ◽  
De Shu Sun
Keyword(s):  
Water Surface ◽  
Peak Flow ◽  
Runoff Coefficient ◽  
Ungauged Basins ◽  
Surface Slope ◽  
Remote Sensing Technology ◽  
Flood Volume ◽  
Sensing Technology ◽  
Water Surface Slope ◽  
Statistical Interpolation

The hydrological research of ungauged basins became the new topic of international hydrological plan, the flood investigation can effectively make up for the information insufficient of the contemporary remote sensing technology and traditional statistical interpolation techniques. Take Dasha River rainstorm for example, water surface slope was monitored of 8‰ by slope-area method, the peak flow was calculated of 1830 m3/s. According to the measured multi-peak flood hydrograph simulates single peak hydrograph and five points probable, the flood volume was calculated of 109 million m3, the runoff coefficient is 0.84 and runoff depth is 505 mm. The river basin has 250 mm previous rainfall, and the underlying surface was saturated, so the result indicated that it accord with runoff yield and concentration theory. The method can be extended for medium and small size river.

scholarly journals Laboratory studies on bedload transport under unsteady flow conditions

2018 ◽  
Vol 66 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Magdalena M. Mrokowska ◽  
Paweł M. Rowiński ◽  
Leszek Książek ◽  
Andrzej Strużyński ◽  
Maciej Wyrębek ◽  
...  
Keyword(s):  
Shear Stress ◽  
Sediment Yield ◽  
Water Surface ◽  
Bedload Transport ◽  
Bed Shear Stress ◽  
Surface Slope ◽  
Stream Power ◽  
Transport Dynamics ◽  
Water Surface Slope ◽  
Total Sediment

Abstract Two sets of triangular hydrographs were generated in a 12-m-long laboratory flume for two sets of initial bed conditions: intact and water-worked gravel bed. Flowrate ranging from 0.0013 m3 s-1 to 0.0456 m3 s-1, water level ranging from 0.02 m to 0.11 m, and cumulative mass of transported sediment ranging from 4.5 kg to 14.2 kg were measured. Then, bedload transport rate, water surface slope, bed shear stress, and stream power were evaluated. The results indicated the impact of initial bed conditions and flow unsteadiness on bedload transport rate and total sediment yield. Difference in ratio between the amount of supplied sediment and total sediment yield for tests with different initial conditions was observed. Bedload rate, bed shear stress, and stream power demonstrated clock-wise hysteretic relation with flowrate. The study revealed practical aspects of experimental design, performance, and data analysis. Water surface slope evaluation based on spatial water depth data was discussed. It was shown that for certain conditions stream power was more adequate for the analysis of sediment transport dynamics than the bed shear stress. The relations between bedload transport dynamics, and flow and sediment parameters obtained by dimensional and multiple regression analysis were presented.

scholarly journals Water surface slope spectra in nearshore and river mouth environments

2016 ◽  
Vol 35 ◽  
pp. 012013 ◽  
Author(s):  
N J M Laxague ◽  
D G Ortiz-Suslow ◽  
B K Haus ◽  
N J Williams ◽  
H C Graber
Keyword(s):  
Water Surface ◽  
River Mouth ◽  
Surface Slope ◽  
Water Surface Slope
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