| Author | Giri, Khadka |
| Call Number | AIT Thesis no. AE-87-49 |
| Subject(s) | Irrigation farming--Nepal
|
| Note | A thesis submitted in partial fulfillment of the requirements
for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The system under study was found primarily geared for
resource mobilization particularly labour force. Nature of the
river source and the extent of resource requirement are the
factors determining the size of the need-based organization. As a
result, a new main canal construction a nd maintenance committee
was formed by merging the three sub-systems. Increased number of
irrigators (membership) 1 resource mobilization, change in the
structure of the organization over a period of time justified the
expansion of the canal. The members are dynamic since they are
continuously improving, adapting, and expanding. These systems
are management-labour-intensive. Thus technical deficiencies are
primarily compensated for by intensive management practices
backed up by simple to complex organizations. The rules of the
Deswar was the impetus to the organization for resource
mobilization. The main problems were washing away of temporary
diversions made of brushes-wood-stone ,breaching of canals
during the flood period resulting in recurrent water supply
interruptions. Excessive loss of water, inability to raise water
level during minimum flow period (i. e winter) from the river due
to highly permeable nature of the temporary diversions are the
causes of seasonality of the system. The success of the system
was due to the "ownership" feeling of the members and local
initiative and full farmers participation and co-operation during
the time of operation and maintenance.
Based on chemical composition of the young rice plants, the
deficiencies of nitrogen and phosphorus were found to be the
constraints to achieve higher yields in the command area.
Influence of rainfall on the rise of ground water table resulted
into water logging problems in low lying areas, especially in the
middle portion of the system. At the tail end of the system the
ground water table is quite below compared to that at the head
and middle reaches of the system. The same trend was also found
in daily ponding water depth in paddy fields. Distribution of
water rights was on the basis of common understanding among the
system leaders based on approximation of the command areas and
households of the various sub systems. Gravity flow allowing
continuous water supply is the method of water distribution and
application. Water is distributed by means of temporary
diversions and flow is regulated by decreasing and increasing the
crest height of the weirs according to the needs of supply of
water based on the available amount of water in the canal. The
largest number of fines imposed to the village of the tail end
( i . e . Go1aurilis strong 1ys up porting the argument that the tai1
end of the system suffers the lack of water supply during low
flow season, and water logging problems the high supply of water
because of closing the outlets at the upper reaches of the
system. Therefore, the tail e nd fails to contribute its share to
the resource mobilization to the system for repair and
maintenance. On the other hand the organization has no
consequence to give excuse to the problems in order to maintain
the equality among the irrigators. |
| Year | 1987 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Nielsen, Jens Moller
|
| Examination Committee(s) | Mizutani, Masakazu ;
Paudyal, Guna N.
|
| Scholarship Donor(s) | DAAD (German Academic Exchange Service) |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1987 |