India

Download the map from the attachment listed below:

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.

1) Overview:

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.

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.

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.

The map shows that Tamil Nadu, Kerala, Karnataka, Goa, Maharashtra and Gujarat are high salinity zones, and Andhra Pradesh, Orissa and West Bengal are moderate salinity zones.

Click here to view the map - IRFC

Overview

In Bangalore, for example, for an annual rainfall of 900mm over 60 rainy days and a roof area of 50 sq.m.

Technical manual for Rainwater Harvesting from the Rainwater Club. It gives detailed information including required parts and approximate costs. The manual covers using rain barrels, recharge pits, directing rainwater into the sump, rainwater filters and recharge wells respectively in 5 parts.

CSE’s advanced course on “Urban Rainwater Harvesting” for working professionals, https://www.cseindia.org/aagc/rwh-professionals.asp salah@cseindia.org