http://117.252.14.250:8080/jspui/handle/123456789/20 2026-04-14T20:01:56Z http://117.252.14.250:8080/jspui/handle/123456789/214 Title: Preface and Contents Authors: National Institute of Hydrology 1992-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/213 Title: Hydrologic design Authors: Seth, S. M. Abstract: Hydrology, is one of the earth sciences which deals with studies of the waters of the earth, their occurrence, circulation and distribution, their chemical and physical properties and their relation to living things. Engineering hydrology uses hydrologic principles in the solution of engineering problems arising from human exploitation of the water resources of the earth. It seeks to establish relations defining the spatial, temporal, seasonal, annual, regional or geographical variability of water, with the aim of ascertaining social risks involved in sizing hydraulic structures and systems. Engineering hydrology seeks to answer following types of questions: 1992-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/212 Title: Hydrological investigations Authors: Gupta, A. A. Abstract: Since independence there is considerable advancement in the field of hydrology, specially in the design of darns, water resources development and planning, hydrological Investigations and research. Every subject on hydrology as mentioned above needs the information/data on various components of hydrological cycle such as rainfall, evaporation, wind, temperature, humidity, soil moisture, surface runoff, ground water runoff, ground water recharge,etc.,. Hydrological investigations are required to be conducted to find out information in each of these items. Information on these components excepting for rainfall was almost negligible prior to independence. The data of these components are now being observed throughout India by different organizations. Advancement in observation of various components of hydrological cycle and organizations which are responsible for its observation and maintenance have been discussed in this Chapter. 1992-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/211 Title: Hydrometeorological studies Authors: Rakhecha, P. R.; Soman, M. K. Abstract: Water is a precious resource and plays a vital role in the development of agriculture, industry and power generation. The extent to which this resource is tapped for its manifold uses can well be a clL to the advancement of an economy. In India, because of rapid increase in population and large scale expansion in industry and agriculture, the need for all round development of water resources has been given very high priority since independence. As a result, large amounts of money are being invested every year in the construction of medium and large scale hydraulic strcutres such as dams, storage reservoirs, irrigation tanks, etc. for optimum utilisation of available water resources of the coin ry. For a better understanding of the water resources of a river basin and for designing costly hydraulic structure, it is necessary to have long period hydrological data like gauge and discharge observations at a number of places along a river. Barring a few rivers, the discharge observations over a long periods are not available for most of the rivers. It is only during the last 2 to 3 decades efforts are being made in an integrated manner to collect hydrological data. On the other hand, the recording of meteorological data like rainfall, temperature, wind, humidity and atmospheric pressure were initiated long back. Consequently, rainfall and other climatic records going back to 80-90 years are available for a good network of stations. Specially, rainfall data are available for a close. network of stations. Meteorologists, hydrologists and engineers have recognised that in the absence of actual hydrological data, the long term rainfall and other meteorological data can be used for the development of water resources of a region by the technique of hydrometeorology. 1992-01-01T00:00:00Z