Technical Reports: Recent submissions

Now showing items 21-40 of 240

TR(BR)-10/99-2000 : Drought characterization in arid and semi-arid climatic regions of India

Pandey, R. P. (National Institute of Hydrology, 1999)

Prediction of regional drought characteristics forms a major concern in the planning of drought management strategies in drought prone areas in India. This study attempts to characterize droughts (frequency, intensity and ...
TR(BR)-9/99-2000 : Development of reaeration coefficient for Indian conditions using mathematical approach in field studies

Jha, Ramakar; Bhatia, K. K. S. (National Institute of Hydrology, 1999)

The river pollution is one of the serious concerns in the present scenario of water resources development. Rivers are one of the most potent sources of water. However, it is being observed that the river quality has been ...
TR(BR)-8/99-2000 : Distribution of heavy metals on sediments under different flow conditions

Jain, C. K. (National Institute of Hydrology, 1999)

The river Hindon is subjected to varying degree of pollution caused by numerous untreated waste outfalls of municipal and industrial effluents. The main sources, which create pollution in river Hindon include municipal ...
TR(BR)-7/99-2000 : Transportation behaviour of lindane in different types of soils

Ali, Imran; Jain, C. K. (National Institute of Hydrology, 1999)

The contamination of groundwater by pesticides is a worldwide problem because of their tissue degradation and carcinogenic in nature. The pesticides are bio-accumulative and stable and, therefore, require close monitoring. ...
TR(BR)-6/99-2000 : Application of artificial neural networks (ANN) in reservoir operation

Kumar, A. R. Senthil; Jain, S. K. (National Institute of Hydrology, 1999)

Reservoirs, the most important elements of complex water resources systems, are constructed for spatial and temporal redistribution of water in quantity and quality. Ever increasing water demands and the difficulties ...
TR(BR)-5/99-2000 : Application of artificial neural networks in flood studies of Ajay river basin

Kumar, Sanjay; Kumar, Rakesh; Chatterjee, C. (National Institute of Hydrology, 1999)

In recent years there has been a growing interest in artificial neural networks (ANN) which operate in a manner analogous to that of biological neurons system. The ANN technique offers several advantages over conventional ...
TR(BR)-4/99-2000 : Development of regional flood formula using L-moments for north Brahmaputra river system

Kumar, Rakesh; Chatterjee, C.; Panigrahy, N.; Patwary, B. C.; Singh, R. D. (National Institute of Hydrology, 1999)

Estimation of magnitudes of likely occurrence of floods is of great importance for finding solution of a variety of water resources problems such as design of different types of hydraulic structures, urban drainage systems, ...
TR(BR)-3/99-2000 : Application of SCS-CN based runoff model

Mishra, S. K. (National Institute of Hydrology, 1999)

Modelling of rainfall generated runoff is of paramount importance in hydrological design of water resources structures. The Soil Conservation Service (1956, 1964, 1985) Curve Number (SCS-CN) method is most popularly used ...
TR(BR)-2/99-2000 : A modified SCS-CN-based hydrologic model

Mishra, S. K. (National Institute of Hydrology, 1999)

Long-term hydrologic simulation studies provide a useful and important input to water resources planning and watershed management practices. The Soil Conservation Service (SCS, 1956) Curve Number (SCS-CN) method is a widely ...
TR(BR)-1/99-2000 : Modelling of debris flows

Mohapatra, P. K. (National Institute of Hydrology, 1999)

Literature review on modelling of debris flow is presented in this technical report. Debris flow is a common natural phenomenon. It is associated with high erosion capacity. Modelling of such flow is necessary from engineering ...
TR(BR)-16/98-99 : Development of a distributed catchment model

Kumar, A. R. Senthil (National Institute of Hydrology, 1998)

The rainfall-runoff relationships are the most complex hydrologic phenomena to model due to large amount of spatial and temporal variability of watershed characteristics. Distributed models have been developed to ...
TR(BR)-15/98-99 : Rigorous derivation of Hooghoudt's equation for drainage spacing

Singh, Vivekanand; Mishra, G. C. (National Institute of Hydrology, 1998)

Hooghoudt's drain spacing formula is based on an implied assumption that in the radial flow zone there is no spatial variation in the flux and hence no vertical recharge in this zone. The head loss in the radial flow zone ...
TR(BR)-14/98-99 : Study of soil moisture movement and recharge to groundwater due to monsoon rains and irrigation Using tritium tagging technique in Hardwar district

Verma, S. K.; Kumar, Bhishm (National Institute of Hydrology, 1998)

District Hardwar falls under the vast alluvial tract of Quaternary deposits of Indo Gangetic plains in Uttaranchal. It is bordered by river Ganga in the east, foot-hills of Himalayas in the north and districts Saharanpur ...
TR(BR)-13/98-99 : Rainfall-runoff modelling of Baitarani river basin upto Anandapur using HEC-1

Nayak, P. C. (National Institute of Hydrology, 1998)

A hydraulic simulation model, HEC-1 has been applied to Baitarani river for modelling hourly flows of the river at Anandapur gauging site. The model has been designed to simulate the response and flood events of a basin ...
TR(BR)-12/98-99 : Rigorous derivation of Hooghoudt's equation for drainage spacing

Singh, Vivekanand; Mishra, G. C. (National Institute of Hydrology, 1998)

Hooghoudt's drain spacing formula is based on an implied assumption that in the radial flow zone there is no spatial variation in the flux and hence no vertical recharge in this zone. The head loss in the radial flow zone ...
TR(BR)-11/98-99 : Modelling of flow in the canal due to breach of bank Part-I

Rangaraj, C. (National Institute of Hydrology, 1998)

Canal breach modelling is of great significance in open channel hydraulics. A limited amount of literature parallel to dam break analysis is available. In this report, a methodology is suggested based on wavelet element ...
TR(BR)-10/98-99 : Determination of snow and ice melt factors in the Himalayan region through field investigations.

Singh, Pratap (National Institute of Hydrology, 1998)

Information on the degree-day factor for snow and ice is required for the estimation of snow and ice melt runoff from a glacierized basin. In the present study, degree-day factor for snow and ice are computed over Dokriani ...
TR(BR)-9/98-99 : Mathematical modelling of branched flows in alluvial channels

Mohapatra, P. K. (National Institute of Hydrology, 1998)

Branched flows in open channels with alluvial conditions occur in natural and man-made systems. Analysis of such flows by mathematical modelling is important considering its applications in water resources and environmental ...
TR(BR)-8/98-99 : Flood control regulation of a multi-reservoir system

Jain, S. K.; Goel, M. K. (National Institute of Hydrology, 1998)

The purposes which a reservoir is intended to serve is an important consideration in planning and operation of the reservoir. Since the functional, infrastructural and operating requirements of a conservation storage ...
TR(BR)-7/98-99 : Estimation of dispersion coefficient from data on soil-column test

Singh, Sushil K. (National Institute of Hydrology, 1998)

One of reliable alternatives for estimation of dispersion coefficient is to conduct a tracer movement test in a soil column and analyze the data for dispersion coefficient. In a tracer movement test, the exit ...

Now showing items 21-40 of 240

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