Reservoir · Czechia
Brno Reservoir
Lake in Brno, South Moravian Region, Czech Republic
- Area
- 1.3km²
- Max depth
- 24m
- Average depth
- 15m
- Elevation
- 227m a.s.l.
- Shoreline
- 7.5km
- Volume
- 0.018km³
Brno Reservoir is a reservoir in Czechia. It covers 1.3 km². On average it is 15 m deep, and 24 m at its deepest point. Its surface lies 227 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Brno Reservoir?
The water is warmest in July, around 24 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more from June to September: comfortable for most swimmers.
The lake usually freezes over for about 34 days a year, from around 3 January to 5 February.
On the shore, afternoons reach 27 °C on average in July and 0 °C in January. The driest month is February (29 mm of rain), the wettest June (74 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (49 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 | Ice | — | 0 | -6 | 35 | 8 | 1.3 | 17 |
| February | 1 | 2 | 3 | -5 | 29 | 7 | 2.9 | 18 |
| March | 5 | 8 | 8 | -1 | 37 | 9 | 4.4 | 17 |
| April | 11 | 14 | 15 | 3 | 34 | 8 | 6.4 | 15 |
| May | 18 | 20 | 20 | 9 | 70 | 13 | 6.8 | 15 |
| June | 22 | 24 | 24 | 13 | 74 | 13 | 7.2 | 14 |
| July | 24 | 25 | 27 | 15 | 72 | 14 | 7.3 | 14 |
| August | 24 | 25 | 26 | 14 | 70 | 11 | 6.9 | 12 |
| September | 21 | 23 | 20 | 9 | 61 | 9 | 5.2 | 14 |
| October | 15 | 18 | 14 | 4 | 42 | 8 | 3.2 | 14 |
| November | 8 | 11 | 7 | 0 | 37 | 9 | 1.2 | 16 |
| December | 2 | 4 | 2 | -4 | 35 | 9 | 1.0 | 16 |
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 24 days before flowing out.
- Its catchment drains 1,582 km² of land.
- About 8.8 m³ of water flow out every second, on average.
Around the shore
What's around Brno Reservoir
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 7beaches and swimming spots
FKK (naturistická) pláž Osada, Brněnská přehrada - Osada, Brněnská přehrada - Sokolské koupaliště, Brněnská přehrada - Rakovec, Brněnská přehrada - Kozí horka and 2 more
- 2campsites
Obora
- 8boat hire and water-sport clubs
NAFLEKU, Půjčovna paddleboardů a šlapadel U sirky, Půjčovna paddleboardů, Český veslařský klub Brno, TJ RAPID Brno and 3 more
- 9marinas and slipways
- 6ferry piers
Pod Trnůvkou, Bystrc, Kozí horka, Sokolské koupaliště, U kotvy and 1 more
- 5viewpoints
Chvalovka
- 14hotels, B&Bs and chalets
OREA Wellness Hotel Santon, Penzion Nad Roklí, Penzion Marie, U Šuláka, Atlantis and 9 more
- —fishing spots
- 31restaurants and cafés
Towns on the shore
- Bystrc24,655 people
- Komín7,228 people
- Žebětín5,646 people
- Rozdrojovice1,089 people
- Kníničky1,066 people
Nearest airport with scheduled flights: Brno-Tuřany Airport (BRQ), 17 km in a straight line.
Car hire at BRQ airport (Brno)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 | 0.5 | 3.0 | 8.5 | 15.1 | 19.7 | 24.1 | 26.6 | 26.1 | 20.3 | 13.6 | 7.0 | 1.6 |
| 2020 | +1.4 | +4.6 | +1.3 | +1.8 | −1.8 | −2.3 | −1.6 | +0.1 | +0.8 | −0.4 | −0.3 | +1.1 |
| 2021 | +0.7 | +0.3 | −0.8 | −3.8 | −3.3 | +1.7 | +0.4 | −2.7 | +1.4 | +0.6 | −0.5 | +0.3 |
| 2022 | +2.7 | +3.8 | +0.8 | −1.6 | +2.5 | +2.6 | +0.9 | +1.2 | −1.5 | +2.6 | +0.9 | +0.3 |
| 2023 | +3.9 | +2.4 | +1.8 | −2.9 | −0.8 | −0.2 | +1.8 | ±0.0 | +5.1 | +4.6 | +1.2 | +1.9 |
| 2024 | +2.1 | +6.6 | +4.0 | +1.1 | +0.9 | +0.9 | +1.0 | +3.9 | +1.3 | +0.5 | −0.7 | +1.4 |
| 2025 | +1.6 | −0.5 | +2.6 | +1.4 | −0.9 | +2.4 | −0.6 | +0.6 | +0.9 | −0.3 | −1.0 | +1.1 |
+1 warmer than usual −1 cooler than usual
Nearby
More lakes nearby
Austria
Hungary
PolandAbout 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 (Q46504) · 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.
