Reservoir Watch
Storage across all 17 Water Supplies Department impounding reservoirs, from the official bi-weekly open-data series — record from 2019.
Average fill
85.8%
Total stored
503.1 hm³
Reservoirs
17
Low level
1
Hong Kong at a glance
Territory-wide average fill
85.8%
503.1 of 586.0 hm³ stored
Reservoirs
17
Total capacity
586.0 hm³
Largest reservoir
High Island Reservoir · 281.11 hm³
Low level
1
Territory-wide fill — multi-year
All reservoirs
Click a pin to exploreLoading map…
Reservoirs
High Island Reservoir
New Territories
Fill level
83.6%
235 hm³
/ 281.11 cap.
Plover Cove Reservoir
New Territories
Fill level
88.8%
204 hm³
/ 229.722 cap.
Shek Pik Reservoir
Lantau
Fill level
89.6%
22 hm³
/ 24.462 cap.
Tai Lam Chung Reservoir
New Territories
Fill level
87.3%
18 hm³
/ 20.49 cap.
Shing Mun Reservoir
New Territories
Fill level
85.0%
11 hm³
/ 13.279 cap.
Tai Tam Tuk Reservoir
Hong Kong Island
Fill level
94.2%
6 hm³
/ 6.047 cap.
Lower Shing Mun Reservoir
New Territories
Fill level
29.5%
1 hm³
/ 4.3 cap.
Kowloon Reservoir
Kowloon
Fill level
82.5%
1 hm³
/ 1.578 cap.
Tai Tam Upper Reservoir
Hong Kong Island
Fill level
94.4%
1 hm³
/ 1.49 cap.
Kowloon Byewash Reservoir
Kowloon
Fill level
58.4%
1 hm³
/ 0.8 cap.
Aberdeen Upper Reservoir
Hong Kong Island
Fill level
100.0%
1 hm³
/ 0.773 cap.
Tai Tam Intermediate Reservoir
Hong Kong Island
Fill level
92.0%
1 hm³
/ 0.686 cap.
Aberdeen Lower Reservoir
Hong Kong Island
Fill level
100.0%
1 hm³
/ 0.486 cap.
Shek Lei Pui Reservoir
Kowloon
Fill level
100.0%
0 hm³
/ 0.374 cap.
Pok Fu Lam Reservoir
Hong Kong Island
Fill level
80.3%
0 hm³
/ 0.233 cap.
Kowloon Reception Reservoir
Kowloon
Fill level
100.0%
0 hm³
/ 0.121 cap.
Tai Tam Byewash Reservoir
Hong Kong Island
Fill level
98.8%
0 hm³
/ 0.08 cap.
Dataset coverage
Tracked
17
reservoirs
With data
17
reservoirs
Tracked capacity
586
hm³
Source: Water Supplies Department (WSD), Government of the Hong Kong SAR
Covers all 17 WSD impounding reservoirs. Service reservoirs (covered tanks) are not impoundments. Hong Kong also imports Dongjiang water from Guangdong — local fill is not the whole supply picture.
About reservoirs in Hong Kong
As of October 1, 2026, the reservoirs we track across Hong Kong that report live levels hold roughly 503 hm³ of water — about 85.8% of their combined capacity. Taken together, Hong Kong's reservoirs are high.
Across the region, 1 is low. Aberdeen Upper Reservoir is the fullest at 100.0%, while Lower Shing Mun Reservoir is the lowest at 29.5%.
Storage figures for Hong Kong come from WSD; the most recent reading is from October 1, 2026. Each reservoir below links to its own page with full history and seasonal context.
Hong Kong at a glance
- Reservoirs tracked
- 17
- Average fill
- 85.8%
- Water stored
- 503 hm³
- Combined capacity
- 586 hm³
- Fullest
- Aberdeen Upper Reservoir (100.0%)
- Lowest
- Lower Shing Mun Reservoir (29.5%)
- Last updated
- October 1, 2026