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Ozone depletion trend map for India from Down to Earth
This map shows the difference between predicted and observed ozone trends in 14 cities of India, based on data collected over a decade Posted on 19 Aug, 2009 03:52 PM

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Map depicting areas prone to flooding in India
A map from Wikimedia Commons showing the areas frequently affected by floods in India Posted on 19 Aug, 2009 03:48 PM

This map shows the regions in the country that are regularly affected by floods.

The major flood prone regions are Punjab, Haryana, most of the Gangetic plains including Uttar Pradesh, North Bihar and West Bengal, the Brahmaputra valley, coastal Andhra Pradesh and Orissa, and South Gujarat.

Rainwater harvesting basics: Filtering the water before storage and use
Filtering rainwater before storage is essentially to remove organic material and silt so that the water stays clean longer. Posted on 19 Aug, 2009 03:29 PM

Overview

Rainwater is amongst the purest water one can get distilled as it is by the sun. However, in a rainwater harvesting system, the water comes in contact with several surfaces, such as the roof or gutters. Its flow becomes possibly mixed with leaves or dust.

District level vulnerability to climate change: An IPCC assessment
The map indicates that most of India's peninsular region (starting from North Karnataka and Rayalseema) including Saurashtra, Kutch and the Thar desert are the most vulnerable to climate change Posted on 19 Aug, 2009 03:26 PM

On a scale of 5, from lowest to highest, this map shows the vulnerability of various districts of the country to climate change. The map shows many of these regions are doubly exposed to the risk of climate change.

Areas prone to floods in India
The major flood prone regions in the country are the Ganga-Yamuna basin, Brahmaputra-Barak basins, Brahmani-Baitarani-Mahanadi deltaic regions, and the Krishna-Godavari basins Posted on 19 Aug, 2009 03:19 PM

The total flood prone region in the country is 40 million Ha, of which about 32 million Ha, can be given protection. Until 1954, only 3 million Ha were protected, while as of 2004, about 15.8 million Ha has been protected. The average annual damage due to floods is estimated at Rs.

Incidence of fluorosis: Map showing states affected by fluorosis in india
Incidence of fluorosis has reached alarming levels in certain pockets of the state while the problem is acute in the states of Andhra Pradesh, Rajasthan and Gujarat Posted on 19 Aug, 2009 12:44 PM

These two maps indicate the percentage of districts affected by fluoride, in each state of the country and also gives data of the range of fluoride concentration in drinking water in each state.

Map: Fluoride in groundwater in Asia
International Groundwater Resources Assessment Centre has mapped available fluoride data for all continents and have come up with this series. Posted on 19 Aug, 2009 12:30 PM

For Asia, this map indicates the probability of occurrence of excessive concentrations of fluoride in groundwater, on a scale of high-medium-low.

Map: International Groundwater Resources Assessment Centre's global overview of salinity in groundwater
This map consists of a description, characterization and geographical delineation (map) of global occurrences of saline groundwater Posted on 19 Aug, 2009 10:20 AM

In India, salinity has three types of genesis - one, by dissolution (areas concentrated in Kutch, North Rajasthan and bordering Punjab, South Rajasthan and bordering areas of Madhya Pradesh and parts of Western Uttar Pradesh; two, by irrigation (areas concentrated in the Deccan Peninsular region of Andhra Pradesh, Karnataka and Tamil Nadu) and parts of Orissa and West Bengal; and three, by late

Rainwater harvesting basics: How to direct roof top rainwater into the sump
This page provides you with the basics of how to direct the roof rainwater into the sump for effective storage Posted on 19 Aug, 2009 10:00 AM

Overview

International Groundwater Resources Assessment Centre's trans boundary aquifers of the world
The transboundary aquifers shows the present state of information regarding the occurrence and extent of TBAs world-wide Posted on 18 Aug, 2009 05:53 PM

Trans-boundary aquifers (TBAs) of the world: This map shows the present state of information regarding the occurrence and extent of TBAs world-wide. The intention of the map is to provide a global overview of these important shared water resources and to encourage their further assessment.

In India, TBAs are located on the India-Pakistan, India-Nepal and India-Bangladesh borders.

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