online_modified_einstein:   Total sediment discharge by the Modified Einstein Procedure
(Version 1.41 Beta 080724)

References

  1. Einstein, H. A., 1950. The bed-load function for sediment transportation in open channel flows. USDA Soil Conservation Service, Technical Bulletin No. 1026, Washington, D.C., September.

  2. Colby, B. R. and C. H. Hembree, 1955. Computations of total sediment discharge, Niobrara river, near Cody, Nebraska. U.S. Geological Survey Water Supply Paper 1357, Washington, D.C.

  3. U.S. Bureau of Reclamation, 1955. Step method for computing total sediment load by the Modified Einstein Procedure. Sedimentation Section, Hydrology Branch, Project Investigations Division, July.

  4. U.S. Bureau of Reclamation, 1966. Computation of "Z's" for use in the Modified Einstein Procedure. Sedimentation Section, Hydrology Branch, Project Investigations Division, June.
INPUT DATA:

[Sample input]     [Rationale]     [Procedure]     [Features]

Stream or river (optional):  

Select:        U.S. Customary or SI units [Default: U.S. Customary Units].

1. Discharge Q [cfs] (m3/s):       

2. Mean velocity u [fps] (m/s):       

3. Average depth d [ft] (m):       

4. Width w [ft] (m):       

5. Flow area A = 0  

6. Water temperature t [oF] (oC):       

7. Kinematic viscosity ν = 0.00000000  

8. Diameter D65 [ft] (mm):       

9. Diameter D35 [ft] (mm):       

10. Measured concentration C [ppm] (ppm):       

11. Sampled suspended load Qsm = 0  

12. Vertical distance not sampled dn [ft] (m):       

13. Mean water depth at sampled verticals ds [ft] (m):       

14. Number of size fractions:       Normal has 9 size fractions (1 fine and 8 coarse); Long has 10 size fractions (2 fine and 8 coarse) [Default: Normal].

15. Enter fraction of bed material in each size range (make sure it is 9 values for Normal; 10 values for Long) (separate each value with a comma; maximum character length is 100 characters).

ib:     

16. Enter percentage of suspended material in each size range (make sure it is 9 values for Normal; 10 values for Long) (separate each value with a comma; maximum character length is 100 characters).

Q's:     

17. Z' mode of computation:       See No. 6 in Features [Default: USBR (1955)].

OUTPUT:

NORMAL
0123456789101112131415161718192021222324
iSize
fraction
(mm)		D
(mm)		D
(ft)		ψ&phi*/21200 D3/2ibibqb43.2 wiBQB

(T/D)

% Size
Q's		Q's

(T/D)

Mult.Z'A"J'1-J'2J"1-J"2PJ"1+J"2
________

PJ'1+J'2

I"1-I"2PI"1+I"2+1Computed
load

(T/D)

10.002-0.06250.01120.000037                     
20.0625-0.1250.08840.00029                     
30.125-0.250.1770.00058                     
40.25-0.50.3540.00116                     
50.5-10.7070.00232                     
61-21.410.00464                     
72-42.830.00928                     
84-85.660.01856                     
98-1611.310.03712                     
-Total                       

LONG
0123456789101112131415161718192021222324
iSize
fraction
(mm)		D
(mm)		D
(ft)		ψ&phi*/21200 D3/2ibibqb43.2 wiBQB

(T/D)

% Size
Q's		Q's

(T/D)

Mult.Z'A"J'1-J'2J"1-J"2PJ"1+J"2
________

PJ'1+J'2

I"1-I"2PI"1+I"2+1Computed
load

(T/D)

10.002-0.01560.00560.000018                     
20.0156-0.06250.03120.00010                     
30.0625-0.1250.08840.00029                     
40.125-0.250.1770.00058                     
50.25-0.50.3540.00116                     
60.5-10.7070.00232                     
71-21.410.00464                     
82-42.830.00928                     
94-85.660.01856                     
108-1611.310.03712                     
-Total                       

             

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