Red tide likelihood
for this week
Medium
30 - 70 %
Forecast up-to-date:
19 Apr 2012
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Key:
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Red Tide
> 90 %
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High
> 70 %
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Medium
30 - 70 %
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Low
< 30 %
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Quick links
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Hong Kong Red Tide Information Network by the AFCD
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Tidal Prediction by the HKO
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Hong Kong Fish Net
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O Pui Tong Fish Culture Zone
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Location:
Northeastern Waters
**
Flushing Time:
Dry Season - 21.3 day
Wet Season - 10.5 day
 Carrying Capacity:
101.4 tonne
***Farming Scale:
Small
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Hydrodynamic information
Predicted tide levels at:
 O Pui Tong
Not available
Today's Current: 0 ~ 5 cm/s, Weak
Water Depth:
12 m
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** dry season – November to February; wet season – May to August
***Farming Scale (m2):
Small - 0~10000; Medium - 10001~20000; Large - 20001~30000; Very large - >30000
Fish Culture Zone Description
O Pui Tong (OPT) Fish Culture Zone is located at the eastern side of Kat O (Crooked Island) in the inner Mirs Bay. It is surrounded by the crook-shaped Crooked Island and Yeung Chau. Together with the fact that it is on the opposite side of the Kat O village (west side), it got its name O Pui Tong, meaning a pond at the back of the fish village. Due to its geometry, weak tidal currents and flushing, pollutants can be easily trapped in the “pond” making this area is quite sensitive to the accumulation of pollutants.
Next to O Pui Tong is Double Haven (Yan Chau Tong) Marine Park, which is famous for its projecting headlands, sand pits and reddish rock cliffs.
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