Newsletter and Technical Publications
<Sourcebook of Alternative Technologies for Freshwater Augumentation
2.1.10 Use of Palm Petioles for Rainwater Harvesting
A suitable tree is planted in the homestead grounds. Suitable trees usually
have broad leaves which collect rainwater which is channelled to a collecting
pot (Figure 36).
Figure 36. Various methods of collecting rainwater using
trees, leaves and plant materials.
Extent of Use
This technology is used in Nigeria.
Operation and Maintenance
The technology has very limited maintenance requirements. Level of
Involvement The technology is usually used by individual households.
Costs are negligible, and, depending on the type of tree used, may
result in a net profit to the householder.
Effectiveness of the Technology
The effectiveness of this technology depends on the effectiveness of
the collecting channel. There are often significant losses resulting from
spillage and other leaks within the system.
The technology is suitable for collecting small volumes of water at the
Use of this technology promotes the growing and maintenance of trees.
It may encourage the propagation of indigenous vegetation.
It is a low cost technology that does not require extensive knowledge to
construct or complex equipment to operate.
Large volumes of water cannot be collected using this technology. Also, the
water may be contaminated with dust, insects and bird droppings as well as plant
The technology is culturally accepted in those areas where it is practised.
United Nations University, Institute for Natural Resources in
Africa, ISSER Building Complex, Nasia Road, University of Ghana, Accra, Ghana.