Political

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.

These "before-after" satellite map images from the UNOSAT website depict the impact of the 2004 Tsunami on the Tamil Nadu coast.

Chennai. http://www.eawater.com/expo/, marketing@eawater.com

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

An overview of the water-related aspects of Sikkim from CGWB Eastern Region

Click here

The Water Resources Department of Karnataka has a lot of relevant information on the river systems in Karnataka, irrigation, water resource development projects in Karnataka, notifications and orders, performance budgeting and allocation.

The survey was done using a closed-ended questionnaire which was administered to key stakeholders including teachers, school children and sometimes the SDMC (School Development and Management Committee) members. All government and aided schools were included in the survey.