- Austin Greenbuilder Program - Rainwater harvesting section of sustainable building sourcebook describes the potential for collecting and using rainwater as a water supply.
- Drinking Rain Water - Ask a scientist: why can't I drink rain water?
- Harvest H2o - The site features user stories, community profiles and vendor listing.
- Harvesting Rainwater - Case study of Anita and Eimar's rainwater house.
- Rain Barrel Information and Sources - Features information and resources on systems for collecting rain water.
- Rain Water System Design Report - Report on rain water system designs for the new environmental science and engineering building at the University of Waterloo, Canada.
- Rainwater factsheet - WELL - Resource Centre Network for Water, Sanitation and Environmental Health
- Rainwater Harvesting - Information on rainwater harvesting pertaining to Texas state, US by Coperative Extension of Texas A&M University.
- Rainwater Harvesting and Purification System - A case study is given to understand the basic process of collection and use of rainwater.
- Rainwater Harvesting Network - Public interest research and advocacy organisation encouraging sustainable development strategies. Guides to different methods for catching water where it falls, newsletter, case histories (primarily in India), and related information.
- Technologies for water harvesting and soil moisture conservation in small watersheds for small-scale irrigation, R.K. Sivanappan - Includes details of the concept, planning and constructional methods, examples.
- Texas Water Development Board- Rainwater Harvesting - Links to the Texas Guide to Rainwater Harvesting and to equipment and services providers.
- TWAD - Rainwater Harvesting - Information on the history of water harvesting methodologies in Tamilnadu (India) and the modern methods adopted for rain water harvesting structures and advised by TWAD Board for both individuals and professionals.
- UK Rainwater Harvesting Association (UKRHA) - News, rainwater harvesting FAQ, information for prospective members, goals and mission statement.