Climate and Weather
Status and problems related to mountain hydrology – A research report by National Institute of Hydrology
Posted on 25 Jun, 2010 07:46 PMThe report discusses the status and progress of studies of various hydrological problems associated with mountainous areas experiencing rain and snow. The principal issues related to mountain hydrology on the local and regional scales are discussed and highlighted.
The status of the hydrological studies carried out in the mountainous basins indicates a poor understanding of basic hydrological variables like precipitation, temperature and evaporation. The non-availability of long duration hydrometeorological data for higher altitude areas is responsible for this.
Hydrological inventory of river basins in Uttar Pradesh - A research report by National Institute of Hydrology
Posted on 25 Jun, 2010 05:47 PMThe hydrological inventory of Ganga basin provides information regarding availability of hydrological data and highlights major hydrological problems of the basins. The information is a useful input in water resources planning, management and research activities.
Snow and glacier contribution in the Satluj river at Bhakra dam - A research report by National Institute of Hydrology
Posted on 25 Jun, 2010 12:07 AMThe study estimates the average contribution of snow and glacier melt runoff in the annual flow of Satluj river at Bhakra dam. This study is restricted to the Indian part of Satluj basin. A water balance approach was used to determine the average snow and glacier contribution to the annual flows.
Simulation of flood hydrograph using an event based rainfall-runoff model - A research report by National Institute of Hydrology
Posted on 25 Jun, 2010 12:00 AMThe study deals with flood estimation through computation of a flood hydrograph for the ungauged Narmada catchment upto Jamtara using the physical and geo-morphological characteristics of the catchment. The catchment area of 17100 sqkm has been sub-divided into five sub-catchments for the purpose of flood estimation.
Rainfall-runoff modeling of Western Ghat region of Karnataka - A research report by National Institute of Hydrology
Posted on 24 Jun, 2010 11:17 PMThe study develops a regional conceptual catchment water balance model for five catchments in the Western Ghat region of Karnataka. The model can be used to estimate the water yield from ungauged catchments located in the region.
The water yield is an integration of discharge as a function of time for a specified duration and reflects the volumetric relationship between rainfall and runoff. The estimation of water yield is required for solution of water resources problems normally encountered in design of storage facilities. It is of use in understanding the water availability for agriculture, industrial and drinking purpose as also for estimating the dependable water supply for power generation and irrigation projects.
Precipitation network design for Myntdu-Leska basin in Meghalaya - A research report by National Institute of Hydrology
Posted on 23 Jun, 2010 10:23 PMThe study develops a precipitation network design for the Myntdu-Leska basin, which lies near Cherrapunji, the zone of highest rainfall in the world. Network design offers an estimation of the number and location of the rain gauge stations to provide adequate information regarding rainfall falling over the catchment.
Daily rainfall-runoff modeling for Gundlakamma basin of Andhra Pradesh – A research report by National Institute of Hydrology
Posted on 22 Jun, 2010 05:20 PMThe study applies a simple five-parameter model based on the concept of probability distributed method as proposed by Moore (1985) to simulate the daily runoff over a nine-year period of 1989-1997 at Tamavaram in Prakasham district of Andhra Pradesh on the Gundlakamma river.
Spatial evaluation of groundwater levels and its quality in Kakinada town (Andhra Pradesh) - A research report by National Institute of Hydrology
Posted on 22 Jun, 2010 04:11 PMThe study presents the spatial analysis of groundwater levels and its quality for the year 1998 for Kakinada town in coastal Andhra Pradesh. The Deltaic Regional Centre of NIH has been monitoring groundwater levels and its quality in and around Kakinada town since 1994. Groundwater samples have been analyzed for physical and chemical parameters. The variation in each parameter is discussed in the report.
A total of 164 samples were collected from 41 observation wells during the months of February, May, August and November 1998. The area covered by these observation wells is around 82 sqkms. The groundwater table contours were plotted for pre-monsoon (May 98) and post monsoon (November 98) periods and the approximate flow direction had been demarcated.
Drought studies for Kalahandi district in Orissa - A research report by National Institute of Hydrology
Posted on 22 Jun, 2010 08:13 AMThe study attempts to advance the understanding of regional drought phenomenon in the Kalahandi district of Orissa and present mitigation strategies. The dry spells during the monsoon crop growing season and wide variations in the quantum of rainfall from year to year result in frequent failure of crops in Kalahandi and as a result the district is categorised as drought prone.
Implementation of SCS model in Dudhnai watershed - A research report by National Institute of Hydrology
Posted on 22 Jun, 2010 08:12 AMThe study applies the methodology developed by United States Department of Agriculture’s (USDA), Soil Conservation Services (SCS) for the nine subwatersheds of the representative Dudhnai basin in Assam & Meghalaya and estimates the runoff volume on a daily basis for the period 1986-1991. The method is widely adopted for the estimation of runoff from rainfall depths and takes into account the important physical aspects of a basin on which runoff depends such as land-use, hydrological soil cover and antecedent moisture condition.