With the progressive completion of major flood prevention projects, the flooding situation in some flooding blackspots and flood prone areas has been significantly improved. The progressive improvements are summarized in the tables and maps shown below:

Change in total number of flooding blackspots

Year	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
Major or Regional blackspots	8	8	8	8	9	8	7	6	5	4	3	2	2	2
Medium, Small or Minor blackspots	82	66	63	76	65	64	64	59	57	49	40	36	33	30

Cumulative total of flood prone rural areas in NT being protected from risk of 50-yr return period flooding

Year	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
Cumulative total of flood prone rural areas in NT being protected from risk of 50-yr return period flooding (ha)	370	370	370	580	1300	1600	1800	2000	2300	2450	2550	2910	3010
Remaining flood prone rural areas in NT (ha)	3000	3000	3000	2790	2070	1770	1570	1370	1070	920	820	460	360

Number of people requesting rescue by FSD during floods

Year	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
No. of People Requesting Rescue	270	76	182	116	183	242	190	12	23	0	146	27	5
No. of Black and Red Rainstorm Warnings	-	-	-	6	7	9	10	2	1	3	1	14	2
Annual Rainfall Depth (mm)	2754	2249	3343	2564	2129	2753	3091	2490	1941	1739	3215	2628	1707

 

           Alleviation of Flood Risk Over Flood Prone Areas in the Northern N.T. Basin

 Alleviation of Flood Risk Over Flood Prone Areas in the North-western N.T. Basin 

 Alleviation of Flood Risk Over Flood Prone Areas in West Kowloon

Important Notes:

The above maps are produced based on computer models of design rainfall and tide combinations for the purpose of illustrating the progressive achievement in alleviation of flood risk over the corresponding drainage basins, as compared with the flooding situation before the implementation of relevant flood prevention projects. The maps should not be used as an indication of the actual flood risk at any particular location, which is the combined result of actual rainfall and tide, as well as the condition of the area at the particular instants. As being affected by the progress of construction work, the actual timetable of alleviation of flood risk may deviate from as shown on the maps.