CACHOEIRA CALDEIRAO
Amapá · ARAGUARI
Capacity
231.21 hm³
Coordinates
0.853°N, 51.297°W
Operator
ONS
Current fill
25.9%vs 7 days ago
+4.7%gaining
vs 1 year ago
-79.1%year-over-year
7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 231.21 hm³ |
| Usable capacity | 231.21 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | ARAGUARI-AP |
| Province | Amapá |
| River basin | ARAGUARI |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 0.853, -51.297 · Open in Google Maps
About CACHOEIRA CALDEIRAO
As of June 10, 2026, CACHOEIRA CALDEIRAO is filled to 25.9% of its total capacity, holding roughly 60 hm³ of water out of a maximum 231 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has risen by 4.7 percentage points, and it is 79.1 points below its level on the same date a year earlier.
Across the readings we hold for CACHOEIRA CALDEIRAO — 52 data points between June 27, 2025 and June 10, 2026 — the level has ranged from a low of 0.0% (July 4, 2025) to a high of 105.0% (June 27, 2025). On average the reservoir is fullest around February and at its lowest around May.
It is operated by ONS primarily for hydroelectric power. It lies within the ARAGUARI basin at 0.853°N, 51.297°W.
Key facts
- Current fill level
- 25.9%
- Water stored
- 60 hm³
- Total capacity
- 231 hm³
- 7-day change
- ▲ 4.7 pts
- Year-on-year
- ▼ 79.1 pts
- Primary use
- Hydroelectric power
- River
- ARAGUARI-AP
- River basin
- ARAGUARI
- Operator
- ONS
- Coordinates
- 0.853°N, 51.297°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 25.9% | 60 |
| 5 Jun 2026 | 21.2% | 49 |
| 29 May 2026 | 3.6% | 8 |
| 22 May 2026 | 0.0% | 0 |
| 15 May 2026 | 0.0% | 0 |
| 8 May 2026 | 2.7% | 6 |
| 1 May 2026 | 1.8% | 4 |
| 24 Apr 2026 | 0.9% | 2 |
| 17 Apr 2026 | 68.9% | 159 |
| 10 Apr 2026 | 95.6% | 221 |
| 3 Apr 2026 | 91.2% | 211 |
| 27 Mar 2026 | 89.1% | 206 |
Frequently asked questions
What is the current water level of CACHOEIRA CALDEIRAO?
As of June 10, 2026, CACHOEIRA CALDEIRAO is at 25.9% of its capacity, holding approximately 60 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is CACHOEIRA CALDEIRAO reservoir full?
No. As of June 10, 2026, CACHOEIRA CALDEIRAO is low at 25.9% of its capacity, so it is not full.
Is the water level at CACHOEIRA CALDEIRAO rising or falling?
The level at CACHOEIRA CALDEIRAO is rising — it gained 4.7 percentage points over the latest week on record.
How much water can CACHOEIRA CALDEIRAO hold?
CACHOEIRA CALDEIRAO has a total capacity of 231 hm³.
Where is CACHOEIRA CALDEIRAO reservoir located?
CACHOEIRA CALDEIRAO is located in Amapá, Brazil, within the ARAGUARI basin (coordinates 0.853°N, 51.297°W).
What is CACHOEIRA CALDEIRAO used for?
CACHOEIRA CALDEIRAO is used primarily for hydroelectric power, and is managed by ONS.