Reservoir · Brazil
Três Marias Reservoir
Reservoir in Minas Gerais, Brazil
- Area
- 800km²
- Average depth
- 26m
- Elevation
- 566m a.s.l.
- Shoreline
- 1,693km
- Volume
- 21.0km³
Três Marias Reservoir is a reservoir in Brazil. It covers 800 km². On average it is 26 m deep. Its surface lies 566 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Três Marias Reservoir?
The water is warmest in December, around 28 °C at the surface, and coldest in July, around 23 °C. The surface averages 20 °C or more from January to December: comfortable for most swimmers.
It does not normally freeze in winter.
On the shore, afternoons reach 33 °C on average in October and 28 °C in June. The driest month is July (3 mm of rain), the wettest December (206 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (94 readings). Shallow bays and beaches are often warmer.
From above
The whole lake from space
Month by month
The year at the lake, month by month
Not a forecast: these are averages over many years. Water is the 2013–2021 average; air, rain, sun and wind are the 1991–2020 average.
Water: 2013–2021 averageClimate: 1991–2020 average
| Month | Water°C | Water high°C | Air high°C | Air low°C | Rainmm | Rainy daysdays | Sunh/day | Windkm/h |
|---|---|---|---|---|---|---|---|---|
| January | 28 | 28 | 30 | 20 | 152 | 20 | 7.6 | 11 |
| February | 28 | 28 | 30 | 19 | 113 | 17 | 8.0 | 10 |
| March | 28 | 28 | 29 | 19 | 134 | 18 | 7.5 | 9 |
| April | 27 | 27 | 29 | 18 | 45 | 9 | 8.1 | 10 |
| May | 26 | 26 | 29 | 16 | 18 | 4 | 8.3 | 10 |
| June | 24 | 25 | 28 | 14 | 4 | 1 | 8.7 | 10 |
| July | 23 | 23 | 29 | 14 | 3 | 1 | 9.0 | 11 |
| August | 23 | 24 | 31 | 15 | 6 | 1 | 9.5 | 12 |
| September | 25 | 26 | 33 | 18 | 22 | 5 | 9.2 | 13 |
| October | 26 | 27 | 33 | 20 | 68 | 12 | 8.1 | 13 |
| November | 28 | 28 | 30 | 20 | 165 | 20 | 6.4 | 12 |
| December | 28 | 28 | 29 | 20 | 206 | 23 | 6.8 | 10 |
Water: LakeTEMP (Landsat 8, 2013–2021). Air, rain, sun and wind: NASA POWER, 1991–2020 averages. A rainy day has at least 1 mm of rain. Sunshine hours are derived from measured solar radiation.
Size & depth
How big, how deep
- On average, water stays in the lake for about 12 months before flowing out.
- Its catchment drains 50,953 km² of land.
- About 658 m³ of water flow out every second, on average.
- Its shoreline is 16.9 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Três Marias Reservoir
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- —beaches and swimming spots
- 1campsites
Chalé do Naim
- —boat hire and water-sport clubs
- —marinas and slipways
- 20ferry piers
Porto Rio do Peixe, Porto São Vicente, Porto do Sucuri, Porto dos Cordeiros, Porto do Otavio and 15 more
- —viewpoints
- 1hotels, B&Bs and chalets
Pousada Recanto Dos Buganvílias
- —fishing spots
- 1restaurants and cafés
Towns on the shore
- Três Marias28,895 people
- Morada Nova de Minas9,067 people
Nearest airport with scheduled flights: Tancredo Neves International Airport (CNF), 206 km in a straight line.
Car hire at CNF airport (Belo Horizonte)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
Recent years
How each month compared
Afternoon high on the shore. The first row is the reference, the 1991–2020 average in °C; the years below show the difference from it: warmer in orange, cooler in blue.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991–2020 average | 29.5 | 29.8 | 28.8 | 29.3 | 28.6 | 28.3 | 28.7 | 30.7 | 33.1 | 33.2 | 30.0 | 29.1 |
| 2020 | +0.4 | −1.6 | −1.3 | −1.7 | −2.2 | −0.4 | +0.1 | −1.0 | +1.8 | −1.2 | −0.4 | +2.2 |
| 2021 | +2.2 | −0.8 | +1.7 | +1.9 | +2.1 | +1.4 | ±0.0 | −0.5 | +2.1 | −1.0 | −1.0 | −0.9 |
| 2022 | −1.4 | −2.1 | +1.4 | +1.6 | −0.7 | +0.5 | +0.3 | −0.2 | −0.7 | +0.5 | −1.7 | −1.4 |
| 2023 | −2.4 | +1.3 | +3.6 | +1.8 | +1.8 | +0.8 | +0.7 | +1.4 | +1.9 | +0.8 | +5.5 | +5.5 |
| 2024 | +0.7 | −0.3 | +3.0 | +3.1 | +4.2 | +2.1 | +1.7 | +1.3 | +2.3 | −0.6 | −0.5 | +0.7 |
| 2025 | ±0.0 | +3.0 | +5.2 | +2.8 | +1.0 | +0.3 | +0.1 | +0.5 | +0.5 | +0.8 | +3.6 | +1.1 |
+1 warmer than usual −1 cooler than usual
About these numbers
| Outline, area, depth, volume | HydroLAKES v1.0 (Messager et al. 2016) · CC BY 4.0 |
|---|---|
| Water temperature and ice | LakeTEMP v1 (Korver et al. 2024), Landsat 8 2013–2021 · CC BY 4.0 |
| Air, rain, sun, wind | NASA POWER, 1991–2020 · public domain |
| Names and description | Wikidata (Q22033747) · CC0 |
| Around the shore | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average or a count from a public dataset. Licences and methods: data sources.
