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
------------------+--------------------------------------------+------
| PERIOD. | AVER-
+------+------+-----+-----+-----+-----+------+ AGE.
PARTICULARS. | Octo-| Octo-| No- | De-|Janu-| Feb-|March.|
| ber | ber | vem-| cem-|ary. | ru- | |
| 1st- | 16th-| ber | ber| | ary | |
| 15th | 31st| | | | | |
------------------+------+------+-----+-----+-----+-----+------+------
| Cu- | Cu- | Cu- | Cu- | Cu- | Cu- | Cu- | Cu-
| secs.| secs.|secs.|secs.|secs.|secs.| secs.| secs.
Average supply | | | | | | | |
entering head of | | | | | | | |
canal | 3,769| 2,896|2,170|1,755|1,622|1,916| 2,909| 2,284
| | | | | | | |
Deduct absorption | 599| 599| 599| 599| 599| 599| 599| 599
------------------+------+------+-----+-----+-----+-----+------+------
Supply at heads of| | | | | | | |
distributaries | | | | | | | |
(_a_) | 3,170| 2,297|1,571|1,156|1,023|1,317| 2,310| 1,685
------------------+------+------+-----+-----+-----+-----+------+------
Corresponding | | | | | | | |
supply for new | | | | | | | |
schemes 3 × | | | | | | | |
figures line (_a_)| 9,510| 6,891|4,713|3,468|3,069|3,951| 6,930| 5,055
| | | | | | | |
Add absorption for| | | | | | | |
new projects | 3,414| 3,414|2,139|2,139|2,139|2,139| 3,414| 2,564
------------------+------+------+-----+-----+-----+-----+------+------
Supply required | | | | | | | |
for new projects | | | | | | | |
at heads of canals|12,924|10,305|6,852|5,607|5,208|6,090|10,344| 7,619
------------------+------+------+-----+-----+-----+-----+------+------
“The rabi irrigation of the new projects is 1,321,019 acres,[48] and
this divided by 442,302 gives approximately the multiplier 3 referred to
at (_a_) in the above table.
[48] Including the Lower Jhelum.
“The figures given in the above table and in the foregoing remarks
relate to the aggregate of the areas in the rabi which receives a
perennial supply and which only receives first and last waterings. On
the Upper Bari Doab Canal the rabi which receives perennial irrigation
is averagely 393,649 acres; the average supply of 1,685 cusecs gives on
this area a duty of 234 acres per cusec at the heads of the
distributaries.
Public-domain text, read in full here on John Shaqi.
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