COPY.
823
C. O.
Enclosure,
23085
PEC
Report by Mr. J. F. Boulton.
Red 30 JUN 044
1.
The shoaling which took place was almost solely due to the shifting of the sea bed, under pressure of the pierre perdue. Careful bona fide soundings, taken by me from time to time, during the 7 years ended 1896, failed to show perceptible silting in front of Howard's Godowns, or shoaling from any cause except the one just mentioned.
2. This shoaling took place where a loss of depth of water could be well afforded. The surface of the mud rose to a maximum extent of about 8 feet at the N.E. corner of the pier, and the average rise was 6 or 7 feet for a length of 100 feet along the East side of the pier. In the next 60 feet it died away into the original level of the mud, and it also tailed away from 8 feet at the N.E. corner of the pier, to 1 foot at the N.W. corner.
3. The result of this shoaling was that the depth of water became reduced to 26 feet where it had formerly been 34 feet, and to 20 feet where it had been 24 feet. But this loss of depth did not signify, because the natural and permanent depth alongside the pier, close to the Praya wall, was nil, and only 10 feet at a distance of 130 feet out from the wall. These depths are referred to low water of spring tides.
4. Ordinary junks have a draught of about 6 or 7 feet when fully laden.
5. The pier was built upon a compact ridge of large stones, cemented together with mud and gravel, the foundations of a former slipway. The top of this ridge had a fall of 10 feet, from the toe of the Praya wall to a point about 180 feet seaward, from which point it fell a further depth of 20 feet, to a point 200...
COPY.
823
C. O.
Enclosure,
23085
PEC
Report by Mr. J. F. Boulton.
Red 30 JUN 044
1.
The shoaling which took place was almost solely
due to the shifting of the sea bed, under pressure of the pierre
perdue. Careful bona fide soundings, taken by me from time to
time, during the 7 years ended 1896, failed to show perceptible
silting in front of Howard's Godowns, or shoaling from any cause
except the one just mentioned.
2. This shoaling took place where a loss of depth of
water could be well afforded. The surface of the mud rose to a
maxisum extent of about 8 feet at the N.. corner of the pier,
and the average rise was 6 or 7 feet for a length of 100 feet in,
along the East side of the pier. In the next 60 feet it died
away into the original level of the mud, and it also tailed
away from 8 feet at the N.5. corner of the pier, to 1 foot at the
N.W. corner.
3. The result of this shoaling was that the depth of
water became reduced to 26 feet where it had formerly been 34
feet, and to 20 feet where it had been 24 feet. But this loss of
depth did not signify, because the natural and permanent depth
alongside the pier, close to the Fraye wall, was nil, and only
10 feet at a distance of 130 feet out from the wall. These
depths are referred to low water of spring tides.
4. Ordinary junks have a draught of about 6 or 7
feet when fully laden.
5. The pier was built upon a compact ridge of large
stones, cemented together with mud and gravel, the foundations
of a former slipway. The top of this ridge had a fall of 10 feet,
from the toe of the Praya wall to a point about 180 feet seaward,
from which point it fell a further depth of 20 feet, to a point
200
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