Hong Kong Regulations

TOLO HARBOUR AND CHANNEL WATER CONTROL ZONE STATEMENT OF WATER QUALITY OBJECTIVES FOR WATERCOURSES - SCHEDULE 2

DEFINITION OF SUBZONES

1. A water course is defined as a system that carries natural drainage storm
water, excluding foul sewage systems. Wholly enclosed nullahs will not be
included except when the condition of the water in the nullah poses a
potential health risk to human beings or the environment by draining into a
watercourse.

2. In the statement of water quality objectives for the watercourses in the
Tolo Harbour and Channel Water Control Zone, the subzones are defined as
follows-

Shing Mun River : SM(A), SM(B), SM(C), SM(D), SM(E), SM(F), SM(G), SM(H),
SM(I). Lam Tsuen River : LT(C), LT(D). Tai Po River : TP(A), TP(B), TP(C).
Other watercourses : All other watercourses except those within the above
defined subzones. (Enacted 1988)