India

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.

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

India - Physical Map from the Survey of India (2002)
A definitive physical features map of the country from the Survey of India, showing elevation in metres of different regions and major rivers and land formations. Posted on 18 Aug, 2009 05:35 PM

Download the map from the attachment listed below:

Land use map of India: National Institute of Hydrology
The National Institute of Hydrology has mapped the various land use regions of the country to indicate the percentage of land under forests, non-agricultural, plantation and grass lands Posted on 18 Aug, 2009 05:20 PM

Land is used for agriculture, for growing forests, for grazing animals, for mining, for installing industries and for construction of houses, roads, railways, etc. For sustainable development and prosperity of any country, the proper and wise use of the land is required.

Rainwater harvesting basics: All you need to know about recharge pits
A recharge pit allows the rainwater to replenish groundwater by recharging the underground aquifers. It can be built to recharge a borewell or just to help the water infiltration in an area. Posted on 18 Aug, 2009 04:09 PM

1) Overview:

Map: Annual average rainfall of India
The annual rainfall map of India indicating the volume of rain different regions in the country receive Posted on 18 Aug, 2009 03:57 PM

Over a range of under 20cm to over 800cm, these two maps, give an idea of the average rainfall received by different regions in the country.

The lowest rainfall receiving areas are Rajasthan, Gujarat, Western Uttar Pradesh, parts of Haryana and Punjab, and the central peninsular region of Karnataka, Maharashtra and Andhra Pradesh.

All things Ecosan: A comprehensive tookit on the subject
A compilation of information relating to Ecosan from various organizations working on sustainable sanitation Posted on 18 Aug, 2009 02:10 PM

GTZ Ecosan Program (www.gtz.de/en) has compiled ecosan materials from several organisations into a CD of capacity building resource material. This CD can be downloaded from this page in its entireity.

River basin and sub-basin map of India from the Central Ground Water Board
The Central Groundwater Board have come out with watershed and basin-wise maps for the entire country. Here's an introduction and the link to the resource Posted on 18 Aug, 2009 01:04 PM

Watersheds are natural hydrological entities that cover a specific aerial expanse of land surface from which the rainfall runoff flows to a defined drain, channel, stream or river at any particular point. The terms region, basin, catchment, watershed etc are widely used to denote hydrological units.

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