ISLAND
DATA
1 DATE OF COMPLETION
2. TOP WATER LEVEL
ABOVE
TYTAM
1883
1904
503-25 FT. ARD] 500 FT.A.P.D.
3 HEIGHT (FOUNDATION LEVEL
4 THICKNESS AT BASE OF DAM
130 FT.
APPROX. 40FT.
52/2 FT.
WONG
INTERMEDIATE TYTAM TUK
NEI CHONG POKFULAM
HONG KONG WATER
ISLAND
TYTAM BYEWASH
EASTERN
TYTAM
WORKS-TABLE NOI STORAGE RESERVOIRS
WESTERN ABERDEEN
LOWER
KOWLOON
1907
1917
1899
1871
UPPER
1931
PAPER WORKS 1690 WATER WORKS RECONSTRUCTED 1932
1910
KOWLOON BYEWASH
1931
MAINLAND
SHEKLEIPUI RECEPTION
SHING MUN
GORGE DAM PINEAPPLE PASSİ
1925
1927
1936
1936
200 FT. A.P.D. | 119-50FT.A.P.D. | 730FT. A.P.D.| 554 FT. A.R.D.
90 FT.
161 FT.
60 FT.
87FT.
120FT. BELOW T.Wind
48 FT.
1,255 FT.
35 FT.
138 FT.
76 FT.
65 FT.
365 FT. A.P.D. |263-50FT.A.R.D. | 448FT.A.R.D.
112 FT.
72 FT
380FT. A.P.D.
645 FT. A.P.D.
480 FT. A.P.D.
625 FT. A.P.D.
625 FT. A.P.D.
143-5 FT.
73 FT.
48 FT.
285 FT.
82 FT.
550 FT.
220 FT.
700 FT.
470 FT.
5 LENGTH AT CREST OF DAMİ
6
TYPE OF PROVISION FOR
OVERFLOW
7 LENGTH OF SPILLWAY
480 FT.
SECONDARY SPILLWAY DAM
8
MATERIALS OF
9
CONSTRUCTION
DRAW OFF
ARRANGEMENTS
10
DRAW OFF LEVELS
11
DELIVERY BY
SECONDARY SPILLWAY DAM
CONCRETE WITH MASONRY FACE
VALVE TOWER IN MAIN DAM
2-
347 FT.
CENTER PORTION OF DAM OF SPILLWAY SECTION
390 FT.
CENTER PORTION
OF DAM OF SPILLWAY SECTION
CENTER" "BORTION
OF DAM OF
266 FT.
OVERFLOW WIERS
& CHANNEL
SPILLWAY SECTION|| AROUND ONE END
200FT.
580 FT.
OVERFLOW WIERS ⇓ CHANNEL
AROUND ONE END
400 FT.
CENTER PORTION
OF DAM OF
400FT.
RECONSTRUCTED TO
·PROVIDE CONTINUOUS
SPILLWAY SECTION|SPILLWAY AT CENTER
25/9-3"BAYS
CONCRETE WITH PRECAST FACING
600 FT
SECONDARY SPILLWAY DAM
140 FEET
CONCRETE
BLOCKS DOWNSTREAM GRANITE FACINGS
EARTH DAM
16/12-0" BAYS
CONCRETE WITH PRECAST FACING
MASONRY UPSTREAM
VALVE TOWER
VALVE TOWER
VALVE TOWER
IN MAIN DAM
4-
DIA.
CONGRETE
AND MASONRY
CEMENT CONCRETŲ DISPLACE CONCRETE STONE FACED WITH MASONRY FACE
VALVE TOWER VALVE TOWER VALVE TOWER VALVE TOWER &
RUBBLE CONCRETE WITH MASONRY FACE
VELVE TOWER ON FACE OF MAIN DAM |
4- 16" DIA.
18*** 487.466.4458 424PT|491.& 472 FT A.P.D. |100,160, 140, 120FT ARD]110 100,90.80.65,50.35. | 715,700. L 665 FT W.O. AT 406FTARD | N.Q. AT HIFT.A.PD WO. @HIFT.A.RO. 20FT WO #SFT. A P.D. NO. #67775FTARQ
GRAVITY
GRAVITY
4-
PUMPING TO GAUGE BASIN
AT TUNNEL ENTRANCE
-S
GRAVTY
بار
DRAW OFFS TO BELLMOUTH AT GAUGE BASIN PUMPED UP TO GAUGE BASIN | JO INS. INTAKE TO
THENCE VIA TUNNEL & BOWEN ROAD CONDUIT
DRAW OFF TUNNEL THRU DAM
ĮGRAVITY TO WEST POINT PUMPING TO PORFULAM FILTERS
CONDUIT TO (WEST POINT FILTERS
BLOCKS
VALVE TOWER
4- 16" DIA.
3- 14" DIA.
350 350 310, 291FT | 246.226. & 210FTARDĮ 435 415, 598,275. FT. WO. AT £70FT APD WO. AT 205 FT.
WO. AT 368 FT. APD.
GRAVITY AND BOOSTER PUMP
PUMPING
187 MAIN TO MT. DAVIS TUNNEL THEN 20 DAIN TO ELLIOT FILTERS
12/12-0*BAYS
CONCRETE
310 FT.
SECONDARY
SPILLWAY DAM
80 FT.
SECONDARY
SPILLWAY DAM
07 FT.
MASONRY
CONCRETE GRANITE FACING
360 340 320 300 FT 1638 624 & 610 FT, WO. AT STO FT.ARD. WO. AT 595 FT A.P.D.
GRAVITY
18*
GRAVITY
2-
472 & 445 FT. W.O. AT 450 FT, A.PD.
GRAVITY
2- 18" DAIN
BELLMOUTH OVERFLOW PLUS & AUTOMATIC SIPHONS
BELLMOUTH 19800 CUSZOS
SIPHONS 3600 CUSTOS
COMBINATION CONCRETE
AND ROCK-FILL
NONE
NONE
EARTH AND ROCK [FILL CONCRETE CORE,
AND SAND WEDGE
VALVE TOWER OVER. OVERFLOW TUNNEL AT MAIN
14- 30" DIA.
DAM
6:4-50 576 537-60 # 479-75 FT. A.RD.
MO. AT 486-23 FT. ARD.
GRAVITY
46°MAIN TO NORTH CONDUIT
GRAVITY
12 DELIVERY MAIN
18" MAIN
ACREAGE OF
13
27 ACRES
2.066 ACRES
18.801 ACRES
109.168 ACRES
BOWEN RO. CONDUIT
6.198 ACRES
THRU KOWLOON RES MAIN
14.462 ACRES
24.792 ACRES
25.825 ACRES
96.585 ACRES
15 ACRES
IS ACRES
9.750 ACRES
165.280 ACRES
RESERVOIR AT T.W. L.
14
STORAGE CAPACITY
36179 M.G.
22 M.G.
196 M.G.
1406 M.G
30. M.G
66 M.G.
173 M.C.
J07 M.G.
353 M.G.
185 M.G.
116 M.G.
33
M.G.
2.921 M.G.
15 CATCHMENT DIRECT
735 ACRES
NIL
260 ACRES
585 ACRES
100 ACRES
425 ACRES
321 ACRES
93 ACRES
405 ACRES
90 ACRES
73 ACRES
96 ACRES
3000 ACRES
16
AREA
INDIRECT
440 ACRES
OVERFLOW FROM TYTAM
160 ACRES
181 ACRES (PLUS O.F“. FROM UPPER RES.)
940 ACRES
28 ACRES
117 ACRES
NIL
(PLUS OF
(PLUS OF.
776 ACRES (PLUS OF.
FRÒM WIN. CHONG)
FROM UPPER RES)
FROM SHEKLIPUI)
OVERFLOW FROM
KOWLOON RES.
66 ACRES
FROM SHING MUN CONDUIT
3.000 ACRES
ACRES OF CATCHMENT
17
2.02
7.2
6.44
4.97
2.18
2.09
PER M.G. STORAGE
18
ESTIMATED YIELD
COMBINED
YIELD
8.25
M.G.D.
0.5 M.G.D.
COMBINED YIELD 2-12 M.G.D.
COMBINED YIELD
3.16
M. G. D.
CAPACITY OF
20
SERVICE RESERVOIRS
FROM TYTAM
19 | CAPACITY OF FILTERS
SLOW SAND FILTERS: R.G FILTERS:
1575 M.G.D
17.956 M G. (INCLUDING PROVISION FOR IO M.GD. FROM KOWLOON)
CONSIDERABLE TAKES OVERFLOW LEAKAGE
CONSIDERABLE
AN ADDITIONAL IS M.G.D. CAN BE PASSED TO ELLIOT FILTERS
SLOW SAND FILTERS: FAST GRAVITY FILTERS:
6-941 M.G. }{ INCLUDING
12 TOTAL 52 M.G.D.
SLOW SAND FILTERS
3.2. M. G. D.
DIRECT CATCHMENT 9-251 INDIRECT
4-25
R.G. FILTERS 20 M.G.D.
|1-35 MGD
PROVISION FOR 1.5 M.G.D. FROM ALBANY )
13-385 M.G.
CILL LOWERED
G IN 1935
TOO SMALL ALL LEAKAGE UNDER OVERFLOW LOST
AND AROUND
CONVERTED
PAPER WORKS
DAM
CURVED DAM WITH 240 FT.
RADIUS
FROM KOWLOON
AND
KOWLOON
RESERVOIR
(10 M.G.D. IS PASSED DIRECT TO HONG KONG
TAKES OVERFLOW OVERFLOWS TO
OVERFLOW TO
BYEWASH
21
REMARKS
DAM RAISED
9FT IN 1897
OVERFLOW LOWERED,
2-9 IN 1936
N.E. END OF
DAM
CERTAIN AMOUNT
OF OVERFLOW
CAN BE TAKEN
INTO BOWEN RD. CONDUIT OR ABERDEEN CATCHWATER
ORIGINAL DAN 40Fİ
BUT FULL
RAISED 1FT. 1899 |GRAVITY SECTION RAISED
2FT. ON
SHEK LEI PUI
RECONTRUCTION
IN 1932
67
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