Rivers

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November 25, 2022 These maps at the watershed scales have been made to not only ensure inclusion of different freshwater ecosystems, their connectivity and hydrological processes, but can also provide a spatial context for conservation decisions.
A stream at Anini, Arunachal Pradesh (Image Source: Roshni Arora)
October 30, 2022 This book by Dr. Mitul Baruah presents a fascinating, ethnographic account of the challenges faced by communities living in Majuli, India, one of the largest river islands in the world, which has experienced immense socio-environmental transformations over the years, processes that are emblematic of the Brahmaputra Valley as a whole. This is an excerpt from the book.
Floods are recurrent phenomena in Assam (Image: Mitul Baruah)
October 11, 2022 In an effort to inform the general public, especially citizen activists, policymakers, researchers, and students, about the current status of the Vrishabhavathi river, Paani.Earth has created the necessary maps, data, analysis, and information to drive conservation awareness and action around the river.
Vrishabhavathi river (Image Source: Paani.Earth)
October 6, 2022 Rapid urbanisation and faulty land use policies are rapidly destroying forests, grasslands and wetlands in Jammu and Kashmir, India and the ecosystem value services they provide. Can these valuable ecosystems be saved?
Deteriorating ecosystems of Jammu and Kashmir, India (Image Source: tkohli at Flickr via Wikimedia Commons)
September 5, 2022 In an attempt to present a perspective on how rivers are used and abused, a map of the Bengaluru rivers illustrate how waste flows through natural river corridors, polluting the rivers and altering their status.
Vrishabhavathi river flow at Thagachguppe Bridge, Kumbalgodu (Image Source: Paani.Earth)
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)
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.

Estimation of runoff from Bewas basin using SCS Curve Number method - A research report by National Institute of Hydrology
In the study, SCS-CN method is used to predict runoff volume from the Bewas basin at a dam site meant to augment municipal drinking water supply to Sagar city. Posted on 29 Jun, 2010 10:10 AM

In the study, Soil Conservation Services Curve Number (SCS-CN) method is used to predict runoff volume from the Bewas basin at a dam site meant to augment municipal drinking water supply to Sagar city. The SCS-CN model involves relationship between land use, land cover, hydrologic soil class, and runoff Curve Number of hydrologic soil cover complex, which in turn is a function of soil type, land cover and antecedent moisture condition.

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.

Modeling at Vasishta-Godavari river mouth using FESWMS – A research report by National Institute of Hydrology
The study attempts to undertake surface modeling to simulate the water levels in the mouth portion of Vasishta-Godavari by taking the tidal effect during a flood season using FESMWS. Posted on 28 Jun, 2010 10:54 PM

The study attempts to undertake surface modeling to simulate the water levels in the mouth portion of Vasishta-Godavari by taking the tidal effect during a flood season, by using the Finite Element Surface Water Modeling System (FESMWS) developed by United States Geological Survey (USGS) to model the reach. The objective is to simulate the surface water flow for a flood discharge of 2.35 lakh cusecs, under the effect of diurnal tide at the bay end.

The surface water levels of a river, especially at the mouth are required for planning and managing flood alleviation schemes and river engineering works. In the lower reaches of many rivers, flood plain inundation may result from very high tide or a very high flood or a combination of both. Also the extent of landward intrusion of saline water into a river at mouth varies with the relative strength of freshwater discharge and the co-oscillating tidal flow resulting from the dynamical interaction of the adjacent coastal waters.

Geomorphological study of Myntdu river basin – A research report by National Institute of Hydrology
In the study, the hydrogeomorphological parameters of Myntdu basin, Meghalaya, have been estimated from a digitized basin map. Posted on 28 Jun, 2010 09:38 PM

In the study, the hydrogeomorphological parameters of Myntdu basin have been estimated from a digitized basin map where basic map data could be retrieved and manipulated quickly and accurately. The estimated geomorphological parameters of the basin covering linear, areal and relief aspects will be helpful in estimating and modeling the flow process in the basin.

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.

Arsenic pollution in groundwater in West Bengal – A research report by National Institute of Hydrology
The report describes the results of the study of arsenic pollution in groundwater in Nadia as well as the hydro-chemical study of the river Hoogly in West Bengal. Posted on 28 Jun, 2010 09:08 PM

The report describes the results of the study of arsenic pollution in groundwater in Nadia as well as the hydro-chemical study of the river Hoogly in West Bengal. The alluvial tract along the river Hoogly covering a stretch of around 470 km encompassing eight districts is affected by arsenic pollution of ground water, the source being geogenic.

Software for reservoir analysis – A research report by National Institute of Hydrology
The report describes a software developed by NIH for reservoir analysis in view of the operational problem and the non-availability of generalized software for reservoir analysis. Posted on 28 Jun, 2010 05:14 PM

The report describes a software developed by the National Institute of Hydrology (NIH) for reservoir analysis in view of the importance of reservoir operation problem in the Indian context and the non-availability of generalized software for reservoir analysis.

Study of recharge to groundwater due to monsoon rains using Tritium tagging in parts of Narsinghpur – A research report by National Institute of Hydrology
The study attempts to estimate the recharge to groundwater due to rainfall and irrigation using tritium tagging techniques in parts of the Narmada catchment in Madhya Pradesh. Posted on 28 Jun, 2010 04:48 PM

The study attempts to estimate the recharge to groundwater due to rainfall and irrigation using tritium tagging techniques in parts of Narsinghpur district under the Narmada catchment in Madhya Pradesh. The estimation of recharge to groundwater is crucial to better water resources management, particularly in arid and semi-arid regions.

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