SR-3 : Water quality and sediment modelling in surface waters

Abstract

The report has been divided into nine chapters. Chapter 1 sets the stage for general introduction of water quality and sediment modelling, the needs of such studies and covers the day by day increase of water resources requirements. Chapter 2 deals with the mathematical modelling, its advantages and classification of various mathematical models. It also gives a step by step method of building a model. Chapter 3 describes the various water quality parameters and gives the standards for various water uses e.g. irrigation water, industrial water, domestic water and water for drinking purposes. It also gives the envisaged planning for a systematic study of Indian rivers. Various parameters stressed by Central Board for Prevention and Control of Water Pollution, for survey, are also discussed. Some of the Indian studies are also discussed. Chapter 4 gives a detailed account of various water quality models available, their advantages and limitations, their capabilities etc. A mention has also been made of non-point source pollution models.

Chapter 5 details the sedimentation concepts giving definitions of various terms encountered in such studies. A comprehensive review of literature on stream load has also been attempted here, touching upon various types of loads e.g. dissolved load, suspended load and bed load. Chapter 6, enumerates reservoir sedimentation, its importance, damages caused by it and importance of carrying out sediment surveys and modelling studies. Various factors causing sediment erosion are also discussed. The sedimentation of few Indian reservoirs and the deposition of sediment and its pattern are also given. Siltation in rivers is included in Chapter 7. The siltation of various rivers of the world is discussed in this chapter. Chapter 8 gives various mathematical models in vogue today. As the literature on this portion is very complex and volumi- nous it has been attempted to give only a brief introduction of various models.

chapter 9 brings out the status of the research in the area of water quality and sediment modelling and the needs of research. The report ends with an exhaustive bibliography on the topic.