Research Reports: Recent submissions

  • M-6 : Multipurpose operation of a reservoir 
    Jain, S. K. (National Institute of Hydrology, 1985)
    Reservoir operation forms a very important part of planning and management of water resources systems. Once a reservoir has been developed, detailed guidelines have to be given ...
  • M-3 : Reservoir capacity computation 
    Seethapathi, P. V.; Jain, S. K. (National Institute of Hydrology, 1984)
    The present report deals with computation of the storage capacity required in a reservoir. In the beginning definition of a number of terms used in this connection is given. In all three methods which ...
  • M-2 : Processing of precipitation data 
    Seth, S. M.; Ramasastri, K. S. (National Institute of Hydrology, 1984)
    Preliminary processing of the precipitation data is essential before it is put to further use in analysis. Processing of precipitation data has two major objectives. One is to evaluate the data for its ...
  • DP-7 : Polynomial regression 
    Seth, S. M.; Goel, N. K. (National Institute of Hydrology, 1983)
    For any non linear function Y = f(x) regression may be obtained by fitting a polynomial. The general form of the polynomial regression is as given under: Y=a0+a1X + a2X²+................... ...
  • DP-6 : Multiple linear regression 
    Seth, S. M.; Goel, N. K. (National Institute of Hydrology, 1983)
    The association of three or more variables can be Investigated by multiple linear regression and correlation analysis. The derivation of relationships among hydrologic variables is of importance for ...
  • DP-5 : Flood routing (Muskingum cunge procedure) 
    Seth, S. M.; Palaniappan, A. B. (National Institute of Hydrology, 1982)
    Flood routing in a natural river is complicated by the presence of irregularities of cross-section and by the presence of lateral flow. It is now possible to quantify the effect of irregularities in the ...
  • DP-4 : Ordering the series and interpolation 
    Seth, S. M.; Nirupama, P. (1983)
    The documentation for ordering the series describes the comparative studies carried out using four subroutines available in the literature. The comparison is made on the basis of compilation time, ...
  • DP-3 : Best fit distribution 
    Seth, S. M.; Goyal, S. K. (1982)
    The documentation of the computer programme for best fit distribution using normalization procedures and chi-square criterion includes listing of source programme, data file and output file with ...
  • DP-2 : Rating curve analysis 
    Seth, S. M.; Palaniappan, A. B. (National Institute of Hydrology, 1982)
    Many hydrologic analyses are made using discharge data of a river at a site. Often these discharge values are obtained from stage measurements. In order to compute the discharge from the ...
  • DP-1 : Flood frequency analysis using power transformation 
    Seth, S. M.; Perumal, M. (National Institute of Hydrology, 1982)
    The purpose of the programme is (1) to transform the given independent and homogeneous annual maximum peak flood series to near normal distribution using Box-Cox transformation and (2) ...
  • TR(BR)-2/2007 : Evaluation of water harvesting structures in the Kandi belt of Jammu region 
    Singh, Vivekanand; Vatsa, Rajan; Ram, Shobha; Mittal, Sanjay; Kotwal, Suraj P.; Goel, M. K.; Mali, Santosh S.; Kumar, Naresh (National Institute of Hydrology, 2007)
    Kandi-belt is the steeply sloping submontane belt of the Himalayas fringing the Siwalik hills and extending discontinuously from Jammu and Kashmir to Assam. This dry-looking belt has undulating topography, steep and irregular ...
  • TR(BR)-2/2006 : Estimation of sediment rates and pattern in sagar lake using Radiometric dating techniques 
    Bhar, A. K.; Singh, Surjeet; Thakural, L. N.; Kumar, Bhishm (National Institute of Hydrology, 2006)
    Sagar lake is situated in the middle of the Sagar city at an elevation of 517 meters above mean sea level in the Vindhyan terrain of Bundelkhand region. Lake surface area is 145 ha at full tank level. The maximum depth is ...
  • TR(BR)-I-2013 Study of reservoir sedimentation, impact assessment and development of catchment area treatment plan for Kodar reservoir in Chhattisgarh state 
    Jaiswal, R. K.; Galkate, R. V.; Thomas, T.; Singh, Surjeet (National Institute of Hydrology, 2013)
    The soil erosion, movement and deposition are part of natural hydrological processes, but the rate of sedimentation is accelerated due to environmental degradation, lack of conservation measures, change in land use, ...
  • TR(BR)-1/2007 : Change estimation of selected western Himalayan glaciers 
    Thayyen, Renoj J.; Arora, Manohar; Kumar, Naresh (National Institute of Hydrology, 2007)
    Glaciers lay across the Himalayan arc at varying climatic and hydrologic regimes and response of these glaciers to the climate change vary accordingly. Glacier size, aspect, elevation range and slope are the other major ...
  • TR(BR)-1/2006-07 : Modelling of a Coastal Aquifer using FEFLOW 
    Kumar, C. P.; Purandara, B. K.; Kumar, Sudhir; Varadarajan, N.; Chachadi, A. G. (National Institute of Hydrology, 2006)
    Coastal tracts of Goa are rapidly being transformed into settlement areas. The poor water supply facilities have encouraged people to have their own source of water by digging or boring a well. During the last decade, there ...
  • TR(BR)-1/2005 : Drought study of chhindwara district using dry spell analysis 
    Galkate, R. V.; Thomas, T.; Pandey, R. P. (National Institute of Hydrology, 2005)
    The occurrence of drought leads to reduction in stream-flow, and consequent reduction in reservoir and tank levels and depletion of soil moisture and groundwater. There is a need to develop suitable criteria for planning ...
  • TR(BR)-1/2000-2001 : Application of GIS for the Assessment of Soil Erosion Using universal soil loss equation 
    T., Chandramohan; Durbude, Dilip G. (National Institute of Hydrology, 2000)
    Soil erosion from a catchment is the result of complex processes, which is controlled by various climatic, topographic, geologic, geomorphic, and land use characteristics. Scientific planning for soil conservation ...
  • TR(BR)-23/99-2000 : Modelling of surface runoff, infiltration and evapotranspiration 
    Singh, Vivekanand (National Institute of Hydrology, 1999)
    In this study, a model has been developed considering surface flow component and subsurface flow component along with the evapotranspiration from the crop as the sink term. The surface flow component is represented using ...
  • TR(BR)-22/99-2000 : Field testing of weighing rain gauge 
    Goyal, V. C. (National Institute of Hydrology, 1999)
    Reliable and accurate measurement of rainfall is an essential requirement in hydrological studies. For automated recording of rainfall data, tipping bucket rain gauges are generally used. It has been reported that the ...
  • TR(BR)-20/99-2000 : Investigation on the capability of artificial neural network for estimating evapotranspiration from minimum weather data 
    Sudheer, K. P. (National Institute of Hydrology, 1999)
    Most of the current hydrologic, water management, and crop growth model require an accurate estimate of evapotranspiration (ET), for reliable applications. A large number of methods for calculation of ET from weather data ...

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