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Integrated Land and Water Information Systems (ILWIS)

Flood plain mapping in a part of Yamuna basin – A research report by National Institute of Hydrology

The study deals with flood plain mapping in a part of Yamuna basin between Gangoh and New Delhi. A flood is a markedly high stage of flow in a river and may inundate adjoining lands, which is called the floodplain of a river. So, floodplain is land inundated by a flood of given frequency. Alternately it is also defined as flat land between valley walls.Read More

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Flood plain mapping in a part of Yamuna river by NIH (1996-97)488.66 KB

Location

New Delhi, DL, India
Latitude: 28.635308, Longitude: 77.224960

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GIS based rainfall-runoff modeling for Hemavathy catchment – A research report by National Institute of Hydrology

The report deals with Geographical Information Systems (GIS) based rainfall-runoff modeling using Topography Model (TOPMODEL) for the Hemavathy catchment of Cauvery basin in Western Ghats of Karnataka. The TOPMODEL is a variable contribution area model in which the predominant factors determining the formation of runoff are represented by the topography of the basin and a negative exponential law linking the transmissivity of the soil with the vertical distance from the ground level.Read More

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GIS based rainfall-runoff modelling for Hemavathy catchment by NIH (1996-97)1.54 MB

Location

Sakleshpur, KA, India
Latitude: 12.939735, Longitude: 75.785777

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Uncertainty analysis - GIUH based Clark model using first order analysis for a catchment of Lower Godavari sub-zone – A research report by National Institute of Hydrology

In this study, uncertainty analysis has been carried out for the parameters of the mathematical model developed at the National Institute of Hydrology for estimation of the Clark model parameters using the geomorphological characteristics of an ungauged catchment. The model has been applied for simulation of direct surface runoff (DSRO) hydrographs of the catchment defined by bridge number 807 of the Lower Godavari sub-zone 3 (f).Read More

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Uncertainity analysis - GIUH based Clark model using first order analysis for a catchment of Lower Godavari subzone - National Institute of Hydrology - Roorkee (1999-2000)2.89 MB

Location

Nagpur, MM, India
Latitude: 21.153889, Longitude: 79.083056

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Derivation of Geomorphological Instantaneous Unit Hydrographs for small catchments in hard rock regions - A research report by National Institute of Hydrology

In the study, the methodology developed at the National Institute of Hydrology to relate Clark model parameters to geomorphological characteristics has been used to develop unit hydrograph for two hard rock catchments, Barchi nala and Malaprabha up to Khanapur. This model has already been successfully implemented for simulation of flood events in small catchments of Upper Narmada and Kolar sub-basin of Narmada river as well as the Tapi sub-zone.Read More

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Derivation of GIUH for small catchments in hard rock region by NIH (1999-2000)1.18 MB

Location

Khanapur, KA, India
Latitude: 16.700000, Longitude: 77.016667

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Artificial recharging of an unconfined aquifer with an injection well in Ghataprabha sub-basin– A research report by National Institute of Hydrology

The report deals with the artificial recharging of an unconfined aquifer with injection well in the Hukkeri taluka in Ghataprabha sub-basin of Krishna river. The Ghataprabha sub-basin of Krishna like most river basins of peninsular India has been facing groundwater development problems varying in nature and severity. It has got a wide spectrum of issues such as cases of failure of wells at several places on the one hand, while some areas becoming unfertile due to waterlogging.Read More

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Artificial recharging of an unconfined aquifer with an injecting well in Ghataprabha sub-basin by NIH (1999-2000)3.39 MB

Location

Belgaum, KA, India
Latitude: 15.850360, Longitude: 74.504669

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Watershed prioritization of Ukai dam catchment using remote sensing and GIS – A research report by National Institute of Hydrology

In the present study, watershed prioritization of the catchment immediately upstream of the Ukai reservoir has been carried out using remote sensing technique. The Watershed Response Model (WRM) has been used for this purpose. This model utilizes the Normalized Difference Vegetation Index (NDVI) and the Soil Brightness Index (SBI), the two important parameters responsible for soil erosion.Read More

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Watershed prioritisation of Ukai dam catchment using remote sensing and GIS by NIH (1999-2000)4.76 MB

Location

Surat, GJ, India
Latitude: 21.195000, Longitude: 72.819444

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Flood estimation by GIS based GIUH approach for Ajay basin up to Sarath gauging site of South Bihar – A research report by the National Institute of Hydrology

In this study, the mathematical model developed at the National Institute of Hydrology for estimation of the Clark model parameters using the geomorphological characteristics of an ungauged basin has been applied for simulation of the direct surface runoff (DSRO) hydrographs of the Ajay basin up to the Sarath gauging site of South Bihar.Read More

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Flood estimation by GIS based GIUH approach for Ajay basin up to Sarath gauging site of South Bihar by NIH (1999-2000)2.57 MB
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Flood studies in Satluj basin – A research report by National Institute of Hydrology

The study attempts to do flood inundation and flood plain feature mapping as well as undertake river planform measurements for a part of the river reach of Satluj. The river is a part of the Indus system and faces flood during monsoon months in spite of various flood control measures that have been adopted. The vast expanse of land adjoining the river course is inundated by large floods.Read More

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Flood studies in Sutlej basin by NIH (1997-98)787.4 KB
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Estimation of soil erosion and sediment yield using GIS – A research report by National Institute of Hydrology

The study demonstrates Geographic Information Systems (GIS) based methodology for identification of sediment source areas and prediction of storm sediment yield for small watersheds. The Nagwa watershed in Bihar was discretized in to 50m grid cells using Integrated Land and Water Information Systems (ILWIS) GIS package, and unique drainage directions were obtained using GIS analysis. Also, a threshold channel network was generated from Digital Elevation Model (DEM) of the watershed. Actual observed drainage and generated drainage networks were superimposed and were found identical.Read More

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Estimation of soil erosion and sediment yield using GIS by NIH (1996-97)3.47 MB
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Automated mapping of snow cover using IRS-IC data - A research report by National Institute of Hydrology

The study presents automated mapping of snow cover using a new spectral channel of Indian Remote Sensing (IRS-IC) data for the Spiti sub-basin of the Satluj river basin. Snow is an important phase of the hydrological cycle and the estimation of snowmelt runoff in the Himalayan rivers, either seasonal or daily, is of immense use in proper management and use of water resources in the basins.Read More

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Automated mapping of snow cover using IRS - IC data (1996-97)1.01 MB
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