Climate and Weather

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December 12, 2022 Study looks at behavioral biases in crop insurance adoption
Adoption rate of crop insurance low in India despite government efforts (Image: PxHere, CC0 Public Domain)
September 13, 2022 Heavy rains and floods have battered Bengaluru yet again. Uncontrolled and unregulated development and concretisation of the city that pays no heed to the ecology and hydrology of the region needs to stop!
Urban flooding in Bangalore (Image Source: Thejas via Wikimedia Commons)
August 11, 2022 This could lead to water quality crisis reinforcing the need for basin-specific management strategies
Around the world, more than a fifth of nitrogen released by human activity ends up in aquatic ecosystems (Image: Wikimedia Commons)
May 14, 2022 Climate change is real. What are its implications for India? This book presents a first of its kind national forecast on the impact of global warming on climate in India.
Climate change is real. What does it mean for India? (Image Source: Robert Hensley/Wikimedia Commons)
March 29, 2022 The intensity and duration of heat waves is predicted to increase in India and human induced anthropogenic changes are to blame.
A man sits under the scorching heat of the sun in front of Amer fort in Jaipur (Picture courtesy: Prabhu B Doss, Flickr Commons: CC-By-NC-ND-2.0)
Hydrological aspects of flood disaster management - A research report by National Institute of Hydrology
The report deals with the hydrological aspects of flood disaster management, a multi-disciplinary field that endeavours to enhance the total productivity of the flood plains. Posted on 01 Jul, 2010 11:58 AM

The report deals with the hydrological aspects of flood disaster management, a multi-disciplinary field that endeavors to enhance the total productivity of the flood plains wherein losses are only a part of it. There are climatological and part-climatological causes of flooding and basin conditions, channel conditions and network conditions intensify floods.

Softwares for hydrological analysis - A research report by National Institute of Hydrology
The report is set in the context of the growing application of computers in the field of hydrology, and the consequent development of large number of software for hydrological and allied applications. Posted on 01 Jul, 2010 10:54 AM

The report is set in the context of the growing application of computers in the field of hydrology, and the consequent development of large number of softwares for hydrological and allied applications. The report is structured as a Directory and presents brief details about softwares for hydrological and general purpose application available with the National Institute of Hydrology.

Hydrological land use mapping in Narmada basin from Jabalpur to Hoshangabad - A research report by National Institute of Hydrology
The study undertakes hydrological land use mapping in Narmada basin from Jabalpur to Hoshangabad by using various methods for design discharge computations and runoff modelling. Posted on 30 Jun, 2010 11:38 PM

The study undertakes hydrological land use mapping in Narmada basin from Jabalpur to Hoshangabad by using various methods right from empirical formulae to Soil Conservation Services Curve Number (SCS-CN) method for design discharge computations and continuous runoff modeling. The SCS Curve Number method is used to derive an empirical relationship of the catchment hydrological variables and based on this the dimensional unit hydrograph is prepared and continuous runoff modeling done.

Soil erosion and sediment yield modeling using kinematic wave in GIS environment – A research report by National Institute of Hydrology
The study uses GIS techniques for spatial discretization of the Karso catchment into time-area segments to be used in numerical solutions for rainfall-runoff-erosion process. Posted on 30 Jun, 2010 10:37 PM

The study uses GIS techniques for spatial discretization of the Karso catchment into time-area segments to be used in numerical solutions of the governing differential equations for rainfall-runoff-erosion process. Various thematic layers such as soil, land use, slope, flow direction and Digital Elevation Model (DEM) were generated for the catchment using various tools available in GIS. These thematic layers were further utilized to generate attribute information such as Manning’s n, USLE K and C parameters for use in the rainfall-runoff-soil erosion model.

Estimation of sediment yield and runoff from small watersheds using WEPP model - A research report by National Institute of Hydrology
The study uses WEPP model of the United States Department of Agriculture (USDA) to simulate the flow and erosion processes in Sallopat watershed of Mahi river basin in Banswara, Rajasthan. Posted on 30 Jun, 2010 08:44 PM

The study uses Water Erosion Prediction Project (WEPP) model of the United States Department of Agriculture (USDA) to simulate the flow and erosion processes in Sallopat watershed of Mahi river basin in Banswara, Rajasthan. The WEPP model is a distributed, continuous, small agricultural watershed erosion model. It can simulate the effects of management practices and land use changes on the spatial and temporal variability of the erosion processes within a watershed system. The major features of this model are the ability to –

 

  • Delineate areas of detachment and deposition on a hill slope or along a channel reach
  • Account for the effects of management and land use changes on the erosion process
  • Account for the effects of backwater on detachment, transport and deposition processes within channels

 

Regional low flow analysis of Narmada basin - A research report by National Institute of Hydrology
The study develops a regional hydrological model for estimating flow characteristics at ungauged sites of Narmada basin using climatological, hydrological and morphological variables. Posted on 30 Jun, 2010 08:33 PM

The study develops a regional hydrological model for estimating flow characteristics at ungauged sites of Narmada basin using climatological, hydrological and morphological variables. The term low flow is broadly used to describe stream flows that are significantly below average or below normal flow levels.

Development of a conceptual model for snow, glacier and rainfed catchments - A research report by National Institute of Hydrology
In this report, a conceptual model is proposed and described for calculation of streamflow runoff arising from rainfall, snowmelt and glacier melt for the Himalayan basins. Posted on 29 Jun, 2010 10:47 PM

In this report, a conceptual model is proposed and described for calculation of streamflow runoff arising from rainfall, snowmelt and glacier melt for the Himalayan basins.  The simple structure of the model is designed keeping in view the sparse network, the availability of data and topography of the Himalayan basins. The model is based on the area-elevation characteristics of the watershed and utilizes the relationships describing the temperature lapse rates and orographic precipitation distribution.

Procedures for systematic processing of rainfall data - A research report by National Institute of Hydrology
The report is an attempt to compile the procedures for systematic processing of rainfall data using computer programs for analysis. Posted on 29 Jun, 2010 08:33 PM

The report is an attempt to compile the procedures for systematic processing of rainfall data. The concepts of rainfall data processing have been discussed. It provides computer programs that are meant for processing and analysis of rainfall data collected from various sources. Different well documented computer programs, their description with input specifications and test input are given in the report.

Soil moisture movement and recharge to groundwater using Tritium tagging techniques in Hardwar - A research report by National Institute of Hydrology
The study looks at soil moisture movement and recharge to groundwater using nuclear methods like tritium tagging. It estimates the recharge to groundwater due to monsoon rain and irrigation. Posted on 29 Jun, 2010 08:27 PM

The study looks at soil moisture movement and recharge to groundwater using nuclear methods like tritium tagging. It estimates the recharge to groundwater due to monsoon rain and irrigation through the unsaturated porous media in case of cultivated and uncultivated fields.

Hydrological investigations and instrumentation in a small watershed in Garhwal Himalayas - A research report by the National Institute of Hydrology
The report presents the preliminary results of a hydrological study in Danda watershed in Tehri-Garhwal, representative of the mountainous sub-humid agro-ecological region. Posted on 29 Jun, 2010 07:47 PM

The report presents the preliminary results of a hydrological study in Danda watershed, a small hilly watershed located in Tehri-Garhwal, representative of the mountainous sub-humid agro-ecological region in the western Himalayas.

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