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)
Capacity evaluation of Bhakra reservoir using digital analysis of satellite data - A research report by National Institute of Hydrology
The study assesses sedimentation rate, water spread area and volume of the Bhakra reservoir in Satluj basin using remote sensing data for the years 1988-89 and 1996-97. Posted on 23 Jun, 2010 10:48 PM

The study assesses sedimentation rate, water spread area and volume of the Bhakra reservoir in Satluj basin using remote sensing data of IRS-1B satellite and LISS-II sensor data of the years 1988-89 and 1996-97. The original elevation-area capacity curves and the reservoir levels on the eight dates of pass of the satellite were obtained from the Bhakra Beas Management Board, Nangal.

Using the trapezoidal formula, the capacity in between the maximum (513.904 m) and minimum (450.436 m) observed levels was assessed for the year 1996-97. The loss of capacity till 1988-89 was 491.315 mcum and till 1996-97 was 807.354 mcum. These could be attributed to the sediment deposition in the zone of study of reservoir.

Estimating hydrological parameters for water balance studies in Tambarapani river basin - A research report by National Institute of Hydrology
The study develops a water balance of a sub-basin, Pachaiar, of the Tambarapani river basin in Tamil Nadu Posted on 23 Jun, 2010 10:35 PM

The study develops a water balance of a sub-basin, Pachaiar, of the Tambarapani river basin in Tamil Nadu. The various components of water balance have been estimated by using the process generating module of Simulator for Water Resources in Rural Basins (SWRRB), a model developed by the United States Department of Agriculture (USDA).

The performance of the USDA model has been validated internationally by various researchers. Since the model required continuous weather data, a time series of it has been generated using another model. The efficiency of this model has been checked with a meteorological station outside the basin.  

Precipitation network design for Myntdu-Leska basin in Meghalaya - A research report by National Institute of Hydrology
The study develops a precipitation network design for the Myntdu-Leska basin, which lies near Cherrapunji, Meghalaya, the zone of highest rainfall in the world. Posted on 23 Jun, 2010 10:23 PM

The 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. 

Hydrochemical studies of Hindon river, UP - A research report by National Institute of Hydrology
A detailed survey of the river Hindon in Uttar Pradesh, was carried out to understand the nature of waste effluents and their impact on water quality. Posted on 23 Jun, 2010 07:49 PM

A detailed survey of the river Hindon was carried out to understand the nature of waste effluents and their impact on water quality.  As per the study, the river water is subject to varying degrees of pollution, caused by numerous untreated waste outfalls of municipal and industrial effluents.

The main sources, which create pollution in the river, include municipal wastes of Saharanpur, Muzaffarnagar and Ghaziabad districts received through tributaries as well as direct outfalls. In the non-monsoon months, the river is completely dry, right from its origin upto Saharanpur town. The effluents of Nagdev nala and Star Paper Mill at Saharanpur generate the flow of water in the river.

Land use and land cover mapping of Devak catchment, Jammu - A research report by National Institute of Hydrology
The study prepares a landuse and landcover map of Devak catchment of Ujh river basin in Jammu for the years 1958, 1979, 1990 and 1998 using image processing and visual interpretation techniques. Posted on 22 Jun, 2010 07:25 PM

The study prepares a landuse and landcover map of Devak catchment of Ujh river basin in Jammu for the years 1958, 1979, 1990 and 1998 using image processing and visual interpretation techniques. It involves analysis of IRS-1A L2B2 (FCC) data for the year 1990, IRS -1C LISS III (digital data) for the year 1998 and SoI topographic maps for the year 1958 and 1979.

Baseflow studies for three rivers between Mahanadi and Godavari deltas - A research report by National Institute of Hydrology
The study suggests a procedure for estimation of baseflow index using the mean daily discharge data over a period of 4 to 6 years for three rivers between the Mahanadi and Godavari deltas. Posted on 22 Jun, 2010 05:01 PM

The study suggests a procedure based on the methodology of Gustard et al (1992) for estimation of baseflow index (BFI) using the mean daily discharge data over a period of 4 to 6 years for three rivers between the Mahanadi and Godavari deltas. The rivers from the Zone 4 (A) are Rushikuliya at Purushottampur in Orissa, Nagavalli at Narayanpuram wier and Sarada at Anakapalli in Andhra Pradesh.

Implementation of SCS model in Dudhnai watershed - A research report by National Institute of Hydrology
The study estimates the runoff volume on a daily basis for the period 1986-1991, for the nine subwatersheds of the representative Dudhnai basin in Assam & Meghalaya Posted on 22 Jun, 2010 08:12 AM

The 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.

Adsorption of zinc in bed sediments of river Ganga - A research report by National Institute of Hydrology
The study attempts to determine the adsorption characteristics of bed sediments of rivers for the control of metal pollution in River Ganga at Haridwar. Posted on 22 Jun, 2010 08:10 AM

The study attempts to determine the adsorption characteristics of bed sediments of rivers for the control of metal pollution. In particular, it looks at adsorption of zinc ions on bed sediments for the river Ganga at Hardwar. In the natural conditions of river water, suspended loads and sediments have an important function of buffering higher metal concentrations of water, particularly by adsorption or precipitation. 

Pollution potential of pesticides in the Hindon river – A research report by the National Institute of Hydrology
The study attempts to find out the pollution potential in the Hindon river, a polluted river in western Uttar Pradesh. Posted on 22 Jun, 2010 08:07 AM

The study attempts to find out the pollution potential in the Hindon river, a polluted river in western Uttar Pradesh. Qualitative and quantitative estimation of pesticides was done using gas chromatography. Among various organic, inorganic and biological water pollutants, pesticides are very dangerous and harmful because of their carcinogenic properties. Pesticides are bio-accumulative and relatively stable and therefore require close monitoring.

Variation of soil moisture characteristics in a part of the Hindon river catchment - A research report by the National Institute of Hydrology
The study attempts to do a field and laboratory determination of soil moisture characteristics in a part of the Hindon river catchment. Posted on 22 Jun, 2010 08:03 AM

The study attempts to do a field and laboratory determination of soil moisture characteristics such as particle size distribution, hydraulic conductivity and soil moisture retention curve in a part of the Hindon river catchment and studies the variation of these along the river in its upstream reach.

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