Research Reports: Recent submissions

  • TR-15 : Mathematical modelling of moving storms 
    Ramasastri, K. S. (National Institute of Hydrology, 1986)
    The magnitude of peak flood and the shape of a flood hydrograph depend not only on the magnitude of total storm rainfall depths but also on its distribution in space and with ...
  • TR-14 : Estimating evaporation losses from lakes and reservoirs 
    Sikka, A. K.; Goyal, S. K. (National Institute of Hydrology, 1986)
    Engineers, planners and all concerned with water resources require an estimate of evaporation losses from lakes and reservoirs for the efficient reservoir operation and the water balance ...
  • TR-13 : Development of a variable parameter simplified hydraulic flood routing model for rectangular channels 
    Perumal, M. (National Institute of Hydrology, 1986)
    A variable parameter simplified hydraulic method based on the approximation of the St. Venant's equations which describe the one dimensional flow in a channel or river has been developed for routing floods in channels ...
  • UM-10 : Muskingum cunge routing procedure 
    Seth, S. M.; Palaniappan, A. B. (National Institute of Hydrology, 1984)
    Experience and observations of flood flows in river show that the flood peak attenuates as it travels downstream. Although lateral flow and flow from tributaries may add up to the flow and lead ...
  • UM-9 : Model parameter evaluation using catchment characteristics 
    Seth, S. M.; Singh, R. D. (National Institute of Hydrology, 1984)
    In view of growing development of water resources in many projects, it becomes necessary to estimate discharge values for ungauged watersheds or sites within a region. The simplest way is to ...
  • UM-8 : Unit Hydrograph Derivation 
    Seth, S. M.; Singh, R. D. (National Institute of Hydrology, 1984)
    The unit hydrograph technique is a simple tool being used by most of the water resources development organisations for the estimation of flood flows. Although number of techniques are available ...
  • UM-7: Finite Element Aquifer Flow Model 
    Seethapathi, P. V. (National Institute of Hydrology, 1984)
    The purpose of this report is to describe how to model aquifer systems with AQUIFEM-1, a finite element aquifer flow model developed by Massachusetts Institute of Technology and implemented at the Institute for ...
  • UM-6 : Preparation of Working Table 
    Seethapathi, P. V.; Dhason, S. R. B. (National Institute of Hydrology, 1984)
    A computer model is presented for quantifying the impacts of multipurpose water management policy. The model is designated for analysis of water availabilities throughout a river basin over extended ...
  • UM-5 : Rating curve analysis 
    Seth, S. M.; Palaniappan, A. B. (National Institute of Hydrology, 1984)
    The water level and the volume of water passing a site in a river provides useful information about the flow, which can be used for many planning purposes. The water levels are easily observed and ...
  • UM-4 : Polynomial Regression 
    Seth, S. M.; Goel, N. K. (National Institute of Hydrology, 1984)
    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 = a o + a + a + + ...
  • UM-3 : Multiple Linear Regression 
    Seth, S. M.; Goel, N. K. (National Institute of Hydrology, 1984)
    The derivation of relationships among hydrologic variables is of great importance for the transfer of information from few gauged sites to many ungauged sites. This relationship may be between ...
  • UM-2 : Frequency analysis 
    Seth, S. M.; Goel, N. K. (National Institute of Hydrology, 1984)
    The user's manual gives the details of a computer programme for best fit distribution using normalization procedures and chi-square criterion. Various normalization procedures which have been used in the ...
  • UM-1 :Tyson Weber ground water flow model 
    Seethapathi, P. V. (National Institute of Hydrology, 1984)
    The ground water in a basin is not at rest but is in a state of continuous movement. While the recharge components tend to rise the water table, the discharge components make the water table ...
  • TN-10 : Artificial recharge of groundwater 
    Lohani, Vinay K.; Seethapathi, P. V. (National Institute of Hydrology, 1984)
    Development of the groundwater resources in various parts of the world has been increasing in recent years as development of surface water resources approaches the point of full potential. The ...
  • TN-9 : Unsteady flow to a multiaquifer flowing well 
    Mishra, G. C. (National Institute of Hydrology, 1984)
    Using discrete kernel technique, analytical solution has been obtained for unsteady flow to a well tapping any number of aquifers which are separated by aquicludes and have different initial hydraulic heads. ...
  • TN-8 : Study of reach transmissivity for stream aquifer interaction 
    Mishra, G. C. (National Institute of Hydrology, 1984)
    A river comprising boundary of flow domain is often encountered in regional groundwater flow modelling. When a river fully penetrates an aquifer and has considerable stream discharge, the river ...
  • TN-7 : Study of depth-area-duration and depth-duration characteristics 
    Seth, S. M.; Ramasastri, K. S.; Singh, Pratap (National Institute of Hydrology, 1984)
    Some of the extreme storms in the contiguous areas of Saurashtra and Rajasthan forming part of the arid and semi-arid belt in India were analysed by the depth-area-duration and depth-duration ...
  • TN-6 : Estimation of seepage from canal using tracer technique 
    Mishra, G. C. (National Institute of Hydrology, 1984)
    Loss of water due to seepage from irrigation canals constitutes a substantial percentage of the total usable water. By the time the water reaches the field, it has been estimated that the seepage losses are of the ...
  • TN-3 : Finite element ground water flow model (aquifer)-Upper Ganga Command Area 
    Seethapathi, P. V.; Roy, Gautam (National Institute of Hydrology, 1983)
    Computer models of ground water aquifers have become a commonly used tool for the analysis and evaluation of ground water schemes. A computer model allows the scientists to do a better job in an ...
  • TN-5 : Water balance and interaction of large depression storage with aquifer in Ghaggar Basin 
    Mishra, G. C.; Bhar, A. K. (National Institute of Hydrology, 1983)
    Interaction of depression storage and aquifer till recently was either neglected or taken as a residual of a water balance study. Understanding of the interaction of surface water body with the aquifer is ...

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