Technology
This research report, by BNP, seeks to assess the possibilities and limitations of using RWH for drinking water, biogas and irrigation and identity the possibilities and limitations of combining these different uses. Specifically, it seeks to:
- Assess the water use practices and water needs with respect to different purposes in rural households presently challenged with water scarcity to identify the need for rainwater harvesting for MUS
- Identify the effectiveness of combining roof water harvesting systems with surface runoff systems for MUS
- Analyse financial and economic aspects and impacts of MUS from rainwater harvesting systems
- Test the combination of Ferro-cement tanks with “1 bag cement” systems and plastic ponds
Powerpoint presentation given at the MUS group meeting in 2011 in Rome by Henk Holtslag, Connect International, on a SMART centre in Tanzania.
Powerpoint presentation given at the MUS group meeting in 2011 in Rome by C.G Raj, iDE Nepal on planning and implementation of MUS in the Nepal-iDE Experience.
Powerpoint presentation given at the MUS group meeting in 2011 in Rome by Ard Schoemaker, RAIN Foundation, on rainwater harvesting in Ethiopia.
Powerpoint presentation given at the MUS group meeting in 2011 in Rome by Virginia Molose, The Mvula Trust on the South-African NGO The MvulaTrust and MUS.
This MSc internship report provides an evaluation of a MUS system, developed by IDE, in Phulbari village in the Nepali middle hills. Specifically it evaluates the performance of the technology and assesses the benefits for the farmers, using IDE‘s definition of impact. It shows that cost-recovery of the system is one year; in such a short time enough benefit can be generated through vegetable production to recover the investment costs. In addition, it reports on improved intra-household equity. One of the points of improvement is the strengthening of water user committees for MUS.
Many farms in tropical countries suffer from droughts in the dry season and sometimes even in the rainy season. In order to significantly increase the capacity to store water, the grassroots Farmer Wisdom movement in Northeast Thailand innovated pond construction on homesteads. This Working Paper first documents how pond water is mainly used to irrigate crops and fruit trees, and is also used for livestock or fish, and for domestic uses, even if ample piped water is available. Households were also found to harvest rainwater from roofs; take water from canals and streams; lift water manually from shallow wells and with electric pumps from deep wells; channel run-off from roads to paddy fields; use precipitation as green water on fields; and buy bottled water. Most households combine at least six of these nine water sources. The second part describes scenarios and some outcomes of a new simulation model, BoNam. This model provides guidelines for the optimal size and site of such ponds according to biophysical factors (weather, soil and crops), socioeconomic factors (prices, availability of labor and off-farm income) and household aspirations
Bharat Sharma (IWMI) presented experiences with MUS in the Northeastern Hills of India, drawing on earlier experiences in Nepal.
Indira Shakya's presentation dealt with technologies for rainwater harvesting for MUS in Nepal
Mastewal Ademe presented options for rainwater management for a chain of water uses, based on experiences in Ethiopia.