'REPORT ON THE ADMINISTRATION OF THE BOMBAY PRESIDENCY, FOR THE YEAR 1907-1908' [‎53r] (104/137)

1907-1C08.]
IRRIGATION.
65 Chap. IV.
PRODUCTION
AND
distribution.
The total area and revenue showed decreases of 3 and 12 per cent, respectively, on the totals
nf the previous year, and of 9 and 13 per cent., on those of the previous ten years There was —
however, a slight increase in the total area irrigated, as compared with that of the previous vea/
onTne 1 st cUss tanks m the Satara and Dharwar Irrigation Districts. In the former the
laro’e decrease in area on the Krishna Canal was more than made up by increases in area on the
five 1 st class tanks in that district. The decrease in area on the Gokdk Canal is more than
tfig total increase in the Satara and Dh^rwar Districts. The decrease in area on the Krishna
and Gokak Canals is due to copious and timely rainfall in the kharif season. ^
Remarks on Individual Works.
There was no capital expenditure on this work during the year.
The source of supply, the Dhupdal Weir, overflowed on the 20th June 1907. The maxi- Gokak Canal,
jnum flood of the year occurred on the 4th August 1907, when the water level rose to 4-94
feet above the permanent weir crest (R. L. SOOS'OS). This flood is estimated at 112,240
cubic feet per second, which is equal to a run-off of 0T6 inch per hour from the whole catch
ment basin (1,080 square miles).
The permanent weir crest was temporarily raised, as in previous years, to a height of 1*75
feet at a cost of Rs. 891, securing an additional storage of 214 million cubic feet.
The main river undersluiees were closed on the 20th November 1907, and the storage was
first drawn upon on the 14th December 1907.
Special Experiments*
The observations for evaporation at the Dhupdal Storage Reservoir were continued.
The loss during the year, omitting the period from 1st to 31st July, amounted to 7*396 feet in
vertical depth.
Observations for silt deposit in tanks were continued during the year in the Belgaum and
Bijdpur Districts only, the results will shortly be reported to Government: observations for
ascertaining the line of saturation in dams were also continued in all the irrigation districts of
the Southern Division and the results were reported to Government.
The cultivation of irrigated Broach cotton was experimented on during the year under Crop experiments.
Dambal and Asundi Tanks in the Dharwar District.
The total cost of this experiment, including the rent of the land, manuring and sundry
expenses, amounted to Rs. 42 and the outturn was 618 lbs. This result is satisfactory, as the
local cottcn generally amounts to about 400 lbs. only per acre.
Second Glass Tanks,
Experiment in
evaporation and
absorption.
Silt in tanks and
saturation through
tank embankments.
The expenditure on repairs to 2nd class tanks, as compared with the average of the
previous ten years, was as follaws :—
District.
1907-1908.
i
Average of previous
ten years.
Remarks,
Number of
tanks
repaired.
Cost.
Number of
tanks
repaired.
Cost.
Belgaum ... ...
Dharwar Irrigation ... ...
Ratnagiri ... ... ... ...
Bijapur ... ...
Sdtara
E&nara ... . ... ...
Total ...
42
110
2
2
Rs.
16,064
77,615
132
828
33
75
2
2
i
To
a
iO
Rs.
20,436
64,137
511
1,378
48
63
156
94,639
112
86,573
The area under irrigation and the irrigation share of the assessed consolidated revenue of
the year under report, compared with the average of the previous ten years, was as follows : —
Name of District.
1907-1908.
Average of previous
ten years.
Remarks.
Area
irrigated.
Assessed
irrigation
revenue.
Area
irrigated.
Assessed
irrigation
revenue.
^Igaum-... ...
Bhdrwdr Irrigation ...
Ratndgiri
Bijdpur
Sdtara "
Kdnara
Total ...
Acres.
9,910
62,448
1,137
1,439
105
561
Rs.
33,049
1,74,326
2,924
5,929
660
2,338
Acres.
9,910
55,783
1,079
3,439
108
552
Rs.
33,049
1,69,724
2,800
5,495
674
2,011
75,600
2,19,226
68,871
2,13,753
b 999—17