A knowledge library on Tools, Technologies and Innovation Pilots, all specifically about rainwater harvesting. It has been developed by the Rainwater for Food Security programme, in collaboration with Akvo Foundation. This library on Rainwater harvesting is part of Akvopedia, the open water and sanitation resource that anyone can edit. The goal of Akvopedia is to improve water and sanitation projects through knowledge exchange on smart and affordable technical solutions and effective approaches.
In addition to contributing to the Rainwater Wiki,you can also try the helpful Knowledge and Networking page from the Rural Water Supply Network (RWSN).