Seite - 432 - in Book of Full Papers - Symposium Hydro Engineering

Actual sediment deposited in the reservoir and the prediction of sediment by different investigators is tabulated in table 4. This table also includes predicted sediment by empirical equations for steady as well as unsteady flow condition through S. No. 6-10. Conclusions From this study to predict the sediment, it can be concluded that:  Table 1 shows wide variation in results by various methods to predict the sediment in steady state condition flow. Methods/laws are applicable for a region of studies.  The quadratic equation (13) it is observed that 63% of the sediment data is enveloped at fifty percent band width.  Equation (13) envelops 94 % of the sediment data at one hundred percent band width,  Empirical equation (18) shows the prediction for smaller discharges are well within 3%, whereas for the higher discharges it envelops 95% data. The predicted sedimentation is close to the observed quantity.  Unsteady flow Exner, total sediment estimates lower by 6.19% than observed.  The equation number 18, has standard error of 3.4%, predicts sediment higher by 6.22% than observed.  The proposed equation number 18 predicts sedimentation well within 1.7% bandwidth. References: [1] Ackers, P. and White, W. R. (1973) Sediment Transport: New Approach and Analysis, JHD, Proc. ASCE, Vol. 99, No. HY-11. [2] Bagnold, R A (1956) Flow of Cohessionless Grains in Fluids, Philosophical Trans. RSL No. 964, Vol. 249. [3] Garcia, M. H. (2007) Sedimentation Engineering, (ASCE Manual and Reports on Engineering Practice No.110) Chapter 2: Sediment Transport and Morphodynamics by Garcia, M. H, p 70 American Society of Civil Engineers. [4] Garcia, M. H. (2007) Sedimentation Engineering, (ASCE Manual and Reports on Engineering Practice No.110) Chapter 16: Turbulence Models for Sediment Transport Engineering by D A Lyn, p 787 American Society of Civil Engineers [5] Garde, R. J. (2006) River Morphology, New Age International Publishers, New Delhi p-479 [6] Larry, M. W. (1999) Hydraulic Design Handbook. McGraw-Hill Companies, Inc. [7] Lawrence, S. H. (1987) “What Are the Impacts of Himalayan Deforestation on the Ganges-Brahmaputra Lowlands and Delta? Assumptions and Facts.” Mountain Research And Development, Vol. 7, No. 3, Proceedings of the Mohonk Mountain.International Mountain Society. 432