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)
Development of a distributed catchment model for Kolar basin - A research report by National Institute of Hydrology
This study is about a spatially distributed unit hydrograph that was developed for the Kolar basin in Madhya Pradesh using Arc Info GIS package. Posted on 29 Jun, 2010 07:39 PM

In this study, a spatially distributed unit hydrograph was developed for the Kolar basin in Madhya Pradesh using Arc Info GIS package. The one-hour distributed hydrograph was determined for the basin using S hydrograph technique from the time-area diagram of the basin.

Space time distribution of rainfall in the catchment of Yeleru river downstream of Yeleswaram, AP - A research report by National Institute of Hydrology
The study attempts to do a space-time distribution of rainstorms, in the catchment of Yeleru River, over a period of 20 years from 1976 to 1996. Posted on 29 Jun, 2010 07:23 PM

The study attempts to do a space-time distribution of rainstorms associated with the tropical cyclones in the Bay of Bengal over a period of 20 years from 1976 to 1996.

The magnitude of peak flood and shape of the flood hydrograph depends not only on the magnitude of the total storm rainfall but also on its distribution in space and time. Improvements of the accuracy and timeliness of hydrological forecasting would thus largely depend on the prediction of rainfall distribution in space and time.

Hydrological modeling using GIS - A research report by National Institute of Hydrology
In this study, NASMO model, a rainfall-runoff method, has been applied for hydrological modeling of the Malaprabha catchment in Karnataka. Posted on 29 Jun, 2010 10:52 AM

In this study, NASMO model, a rainfall-runoff method, which uses the SCS method to determine effective rainfall, the linear reservoir method to route the runoff over land and the modified Puls method to route the runoff in the stream have been applied for hydrological modeling of the Malaprabha catchment in Karnataka. Geographical Information Systems (GIS) has been applied to derive the catchment characteristics like shape, size, slope and land use pattern.

Rainfall-runoff modeling for water availability in Ken river basin using SCS-CN model and remote sensing approach - A research report by National Institute of Hydrology
The report is the first of a two-part study on water availability for the Ken river system, MP and attempts to evaluate the direct surface runoff in the smaller basins. Posted on 29 Jun, 2010 10:41 AM

The report is the first of a two-part study on water availability for the Ken river system and attempts to evaluate the direct surface runoff in the smaller basins, where gauging sites are not available. In this study on water availability in Ken river basin, rainfall-runoff modeling in the Sonar, Bearma and Bebas river basins, which are the sub-basins of the Ken river system, have been carried out using the Soil Conservation Services Curve Number (SCS-CN) model.

This is a widely used hydrological model for calculating the runoff using rainfall and Curve Number (CN). The SCS-CN is a quantitative descriptor of the land use, land cover and soil complex characteristics of a watershed. The CN is an index that represents the watershed runoff potential.

Daily rainfall-runoff modeling of Rushikuliya river - A research report by National Institute of Hydrology
In this study, a Hydrologic Simulation Model (HYSIM) is applied to the Rushikuliya river basin in Orissa to model the daily flows of the river at Purushottampur. Posted on 29 Jun, 2010 10:29 AM

In this study, a Hydrologic Simulation Model (HYSIM) is applied to the Rushikuliya river basin in Orissa to model the daily flows of the river at Purushottampur. The model used in the study is a menu-driven PC based version and contains modes both for optimization and production runs.

Application of a modified SCS-CN model - A research report by National Institute of Hydrology
In this study, the modified version of the Soil Conservation Services-Curve Number was employed to the data of 14 watersheds falling in the arid and 2 watersheds in the sub-humid areas. Posted on 29 Jun, 2010 10:20 AM

In this study, the modified version of the Soil Conservation Services-Curve Number (SCS-CN) by Mishra and Singh (1998a) was employed to the data of 14 watersheds falling in the arid (Rajasthan) and 2 watersheds in the sub-humid (Madhya Pradesh and Uttar Pradesh) regions of India and the results were compared with those of the existing SCS-CN method. The modified version is found to perform better than the existing SCS-CN method in all applications to the data of 16 watersheds.

Calibration of a catchment model using Shuffled Complex Evolution Algorithm (SCE-UA) - A research report by National Institute of Hydrology
The study attempts to apply the Shuffled Complex Evolution Algorithm (SCE-UA) of Duan et al for the calibration of a Conceptual Rainfall Runoff (CRR) model. Posted on 29 Jun, 2010 12:17 AM

The study attempts to apply the Shuffled Complex Evolution Algorithm (SCE-UA) of Duan et al for the calibration of a Conceptual Rainfall Runoff (CRR) model. CRR modeling lies intermediate between physically based models and black box models. 

Development of data simulation model and irrigation schedules for Eastern Godavari delta (Andhra Pradesh) - A research report by National Institute of Hydrology
The study has been conducted to develop a data simulation model and irrigation schedules for the eastern Godavari delta irrigation system, Andhra Pradesh. Posted on 28 Jun, 2010 11:45 PM

The study has been conducted to develop a data simulation model and irrigation schedules for the eastern Godavari delta irrigation system, Andhra Pradesh. It aims at analysis of various factors that influence the irrigation operations and development of appropriate mathematical models and associated computer programs.

Application of TOPMODEL to Malaprabha catchment – A research report by National Institute of Hydrology
The study applies TOPMODEL (Topography Model) to the Malaprabha catchment of Krishna river basin in Karnataka to simulate the daily flows at Khanapur site. Posted on 28 Jun, 2010 09:18 PM

The study applies TOPMODEL (Topography Model) to the Malaprabha catchment of Krishna river basin in Karnataka to simulate the daily flows at Khanapur site. The catchment area of Malaprabha up to discharge measuring site Khanapur is 520 sqkm. The model uses topographic index for the formation of runoff through development of a Digital Elevation Model (DEM) by interpolating the contours in the basin at 300 m grid size.

Flood estimation for large catchments using deterministic approach – A research report by National Institute of Hydrology
The report presents an interactive software that has been developed to provide design flood estimates for large as well as small sized catchments and analyse their rainfall records. Posted on 28 Jun, 2010 08:04 PM

The report presents an interactive software that has been developed to not only provide design flood estimates for large as well as small sized catchments but also help the users analyse their historical rainfall-runoff records for calibration and validation of the various techniques for part or whole of the catchment and river reaches.

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