Open water-data platform · 15 countries
Reservoir water levels, worldwide
Live storage and fill levels for 2,019 reservoirs, drawn from official hydrological sources across 15 countries — checked daily.
15
Countries tracked
2,019
Reservoirs tracked
51.1%
Global average fill
188
At critically low levels
1,366 km³
Combined capacity
Updated Sep 11, 2026 · 1,934 reservoirs reporting
Reservoirs.EARTH tracks how full the world’s reservoirs are. We collect official storage readings from national hydrological agencies and turn them into clear, comparable fill levels, multi-year trends and seasonal context — so anyone can see, at a glance, whether a dam is filling up or drying out. Every figure links back to its source, and we check for new official readings every day.
Countries covered
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MITECO official data
Spain
Average fill
62.6%
401 reservoirs
SNIRH official data
Portugal
Average fill
85.0%
51 reservoirs
USGS NWIS data
United States
Average fill
56.8%
524 reservoirs
ONS official data
Brazil
Average fill
66.5%
102 reservoirs
CWC official data
India
Average fill
57.7%
317 reservoirs
DWS official data
South Africa
Average fill
95.8%
218 reservoirs
IRSA official data
Pakistan
Average fill
93.5%
3 reservoirs
BOM official data
Australia
Average fill
63.5%
281 reservoirs
XM data · energy (GWh)
Colombia
Average fill
79.2%
24 reservoirs
WRA official data
Taiwan
Average fill
64.4%
23 reservoirs
WSD official data
Hong Kong
Average fill
87.9%
17 reservoirs
WDD official data
Cyprus
Average fill
38.7%
21 reservoirs
USGS/PREPA · water level (m)
Puerto Rico
Below seasonal norm
14 / 19
19 reservoirs
NVE data · energy (TWh)
Norway
Average fill
63.6%
5 price areas
Meridian/NZX · energy (GWh)
New Zealand
Average fill
88.1%
5 storage areas
Right now around the world
Sizeable reservoirs with a reading in the last 30 days.
Lowest levels
Closest to empty
Reservoir Transparency Index
How openly does your country publish its water data?
We scored 195 countries on the openness of their reservoir reporting. See the rankings, grades and methodology.
Built on official data
Every reading comes from a national hydrological authority — never estimated or crowd-sourced.
From The Reservoir
All articles →Sep 5, 2026 · 7
September 2026 Reservoir Levels in our 15 countries: 52% average — South Africa at 96%, Lake Powell at 21%
The 1,913 reservoirs we track with a current volume reading held 52.2% of capacity in early September 2026. That average is not a climate. South Africa is 95.8% full. Lake Powell is 20.5%. India closed the monsoon at 61% and is still 10 points behind last year. Spain is 64%; Cyprus is 39%. Norway's south is 46% while the north is 91%.
Sep 5, 2026 · 8
India Reservoir Levels, September 2026: 61% Full, Still 10 Points Behind Last Year
India's monitored reservoirs held 61% of capacity on 3–4 September 2026 — 144 km³ across 307 reservoirs — after rising from 22% in early July. On a like-for-like basket the country is 10 points behind 3 September 2025. Madhya Pradesh and Indira Sagar have recovered; the remaining hole is the Cauvery (KRS 54% against 97% last year, Lower Bhawani 17% against 100%), plus Bhakra at 61% against 90%.
Aug 25, 2026 · 10
Bhakra Dam Water Level, August 2026: 53.9% Full as BBMB Tells Punjab, Haryana and Rajasthan to Cut Draws
Bhakra was 53.9% full on 20 August 2026 — 3,356 MCM, about 118.5 TMC of live storage. That's the CWC bulletin. The next day BBMB told Punjab, Haryana and Rajasthan to stop overdrawing. The dam is still filling: it was 21.4% on 2 July. Last mid-August it was at 70%, and a week later they opened the floodgates. Pong is 61.9%. Together they hold 1,994 MCM less than a year ago.