Ordnance Datum
- 57 -
19
1915
HONGKONG.
DIAGRAM OF LOW LEVEL DAM UNDER CONSTRUCTION AT TYTAM TUK SHEWING PROGRESS TO 30TH JUNE, 1915.
Laid before the Legislative Council by Command of His Excellency the Governor, September 9th, 1915.
No.
Total length of dam excluding tongue into hillside at ends 1195 feet Draw-off lower
Overflow length overall 279 feet →→
Ordnance Datum
Overflow face
Flood-water channel.
DOWN-STREAM ELEVATION OF COMPLETED DAM
Culverts for stream diversion.
W. CHATHAM
original
DIRECTOR OF PUBLIC WORKS
surface
உ
Ground
SECTION THROUGH CENTRE LINE OF DAM
SCALE I INCH = 100 FEET
Excavation to 30th June 1915 shewn thus :- Concrete & masonry
-120ƒ
Progress to June 30th
1915
Ordnance balam
109% ft
CROSS SECTION ON LINE A-B → SCALE 1 INCH = 30 FEET ———
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