Irrigation works : $b the principles on which their design and working should be based, with special details relating to Indian canals and some proposed improvementsBellasis, E. S. (Edward Skelton)
Science
Irrigation works : $b the principles on which their design and working should be based, with special details relating to Indian canals and some proposed improvements
Bellasis, E. S. (Edward Skelton)
Canals; Irrigation
When a channel is scoured, any regulator in it can be kept partly closed
so as to reduce the surface slope in the reach upstream of the regulator
and encourage the deposit of silt. A table should, in such cases, be
drawn up giving the gauge readings to be maintained at the tail of the
reach corresponding to given readings at the head.
Various methods of protecting banks are described in _River and Canal
Engineering_, Chapter VI. The growing of plants on the inner slopes of
channels whose sides fall in, needs special attention. Some remarks on
this are given in _Punjab Rivers and Works_, Chapter II., Art. 3. A
specification for bushing is given in Appendix E of this volume.
A Subdivisional Officer generally receives a steady stream of
applications from members of the irrigating community regarding--among
other matters--outlets or watercourses. Generally these applications are
made over to the zilladar to be reported on. In a large number of cases
the applicant states that the irrigation of his land or “holding” is not
satisfactory, or has fallen off, and sometimes he asks that it may be
transferred, wholly or in part, to another watercourse which he thinks
will give a better supply. In all such cases, and in some others, the
first requirement is a statement of the irrigation figures. The
irrigation register gives only the total for the watercourse. A printed
form should be prepared with spaces for showing the name of the
distributary, villages, watercourses, holdings and applicants concerned,
and the nature of the application. Below this is a form, prepared
somewhat as shown below. When this form is filled in, the state of
affairs can at once be seen and much trouble is saved. The zilladar
obtains the figures from the old field registers. The amount of detail
required as to the applicant’s lands depends on the nature of his
application. If it deals with only part of his land the other parts
should also be shown. He may for instance be giving a disproportionate
share of water to one part. If a transfer to another watercourse is
asked for, the figures for that watercourse are also required.
Public-domain text, read in full here on John Shaqi.
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