ANNUAL REPORT_2008.pdf - Rural Water Supply and Sanitation ...

Micro-Irrigation
The Board has endeavored to introduce the microirrigation
component as an integral part of the program
piloting from Batch - VI onwards utilizing the available
excess water from the water supply system for
vegetable/cash crop farming. So far the technical manual
for drip irrigation has been prepared. Due to some
limitation, the micro irrigation schemes have not yet
been initiated. However, the communities are using the
waste water and excess water from the taps for kitchen
gardening.
Rain Water
Harvesting (RWH)
Specially, in the hilly areas where there are no alternate
sources suitable for gravity schemes, the RWH schemes
are designed for implementation. The Board has
developed the technical guidelines for design, estimation
and construction of the RWH. In 2007, four RWH schemes
were implemented in western hill districts of Nepal.
Small Pump (Lift) Scheme
These schemes are proposed in Terai
communities where the shallow tube well
and dug wells are not suitable for drinking
purposes due to arsenic and the high iron
content problem. The water quality test
report also showed that the shallow tube
wells and dug wells remain at high risk of
faecal contamination. There has been
increasingly a demand for such schemes
in Batch VI and onwards. It will be quite
appropriate to promote such type of
schemes in the Terai area if the
communities are willing to pay and can
afford future O & M costs and if electricity
is available.
These schemes have a small bore hole near
the reservoir and an electrical submersible
pump to lift the water to the elevated
reservoir (RCC/ferro-cement) to supply
water under gravity. In some cases, where
the elevated natural ground profile is
available, ferro-cement reservoirs are
constructed. Based on the knowledge from
Batch - V schemes, a cost effective design
will be prepared and implemented in the
forthcoming batches.
14 · RWSSFDB Annual Report 2008