Reservoir Watch
Storage across all 17 Water Supplies Department impounding reservoirs, from the official bi-weekly open-data series — record from 2019.
Average fill
88.8%
Total stored
520.6 hm³
Reservoirs
17
Critical
1
Hong Kong at a glance
Territory-wide average fill
88.8%
520.6 of 586.0 hm³ stored
Reservoirs
17
Total capacity
586.0 hm³
Largest reservoir
High Island Reservoir · 281.11 hm³
Critical
1
Territory-wide fill — multi-year
All reservoirs
Click a pin to exploreLoading map…
Reservoirs
High Island Reservoir
New Territories
Fill level
81.8%
230 hm³
/ 281.11 cap.
Plover Cove Reservoir
New Territories
Fill level
96.1%
221 hm³
/ 229.722 cap.
Shek Pik Reservoir
Lantau
Fill level
99.8%
24 hm³
/ 24.462 cap.
Tai Lam Chung Reservoir
New Territories
Fill level
100.0%
21 hm³
/ 20.49 cap.
Shing Mun Reservoir
New Territories
Fill level
93.7%
12 hm³
/ 13.279 cap.
Tai Tam Tuk Reservoir
Hong Kong Island
Fill level
100.0%
6 hm³
/ 6.047 cap.
Lower Shing Mun Reservoir
New Territories
Fill level
12.7%
1 hm³
/ 4.3 cap.
Kowloon Reservoir
Kowloon
Fill level
84.6%
1 hm³
/ 1.578 cap.
Tai Tam Upper Reservoir
Hong Kong Island
Fill level
100.0%
2 hm³
/ 1.49 cap.
Kowloon Byewash Reservoir
Kowloon
Fill level
59.8%
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
99.6%
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
88.8%
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
100.0%
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 August 16, 2026, the reservoirs we track across Hong Kong that report live levels hold roughly 521 hm³ of water — about 88.8% of their combined capacity. Taken together, Hong Kong's reservoirs are high.
Across the region, 1 reservoir is at critically low levels. Tai Lam Chung Reservoir is the fullest at 100.0%, while Lower Shing Mun Reservoir is the lowest at 12.7%.
Storage figures for Hong Kong come from WSD; the most recent reading is from August 16, 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
- 88.8%
- Water stored
- 521 hm³
- Combined capacity
- 586 hm³
- At critically low levels
- 1
- Fullest
- Tai Lam Chung Reservoir (100.0%)
- Lowest
- Lower Shing Mun Reservoir (12.7%)
- Last updated
- August 16, 2026
Frequently asked questions
How full are reservoirs in Hong Kong right now?
As of August 16, 2026, the reservoirs tracked in Hong Kong that report live levels are 88.8% full overall, holding about 521 hm³ of water.
How many reservoirs are there in Hong Kong?
reservoirs.earth tracks 17 reservoirs in Hong Kong, with a combined storage capacity of 586 hm³.
Which reservoir in Hong Kong is the fullest?
Tai Lam Chung Reservoir is currently the fullest reservoir in Hong Kong, at 100.0% of capacity.
Which reservoir in Hong Kong is the lowest?
Lower Shing Mun Reservoir is currently the lowest in Hong Kong, at 12.7% of capacity.
Where does the reservoir data for Hong Kong come from?
All storage figures for Hong Kong come from WSD, an official source, last updated August 16, 2026.