Reservoir · Germany
Hengsteysee
Reservoir
- Area
- 1.0km²
- Average depth
- 14m
- Elevation
- 98m a.s.l.
- Shoreline
- 7.5km
- Volume
- 0.014km³
Hengsteysee is a reservoir in Germany. It covers 1.0 km². On average it is 14 m deep. Its surface lies 98 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Hengsteysee?
The water is warmest in July, around 22 °C at the surface, and coldest in January, around 2 °C. The surface averages 20 °C or more from July to August: comfortable for most swimmers.
It does not normally freeze in winter.
On the shore, afternoons reach 24 °C on average in July and 4 °C in January. The driest month is April (47 mm of rain), the wettest January (90 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (73 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 | 2 | 2 | 4 | -2 | 90 | 16 | 1.2 | 21 |
| February | 4 | 5 | 5 | -2 | 70 | 13 | 2.4 | 20 |
| March | 7 | 10 | 9 | 0 | 64 | 14 | 4.1 | 18 |
| April | 12 | 14 | 14 | 4 | 47 | 11 | 6.3 | 15 |
| May | 16 | 18 | 18 | 8 | 69 | 13 | 6.8 | 15 |
| June | 19 | 21 | 22 | 11 | 71 | 14 | 7.1 | 14 |
| July | 22 | 22 | 24 | 14 | 82 | 16 | 6.9 | 14 |
| August | 22 | 22 | 24 | 13 | 84 | 14 | 6.1 | 14 |
| September | 18 | 20 | 20 | 10 | 67 | 13 | 5.2 | 15 |
| October | 13 | 16 | 14 | 6 | 68 | 13 | 3.3 | 17 |
| November | 8 | 10 | 8 | 3 | 81 | 15 | 1.5 | 18 |
| December | 4 | 5 | 4 | 0 | 90 | 17 | 0.9 | 20 |
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 4 days before flowing out.
- Its catchment drains 3,428 km² of land.
- About 44 m³ of water flow out every second, on average.
Around the shore
What's around Hengsteysee
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- —beaches and swimming spots
- 7campsites
Camping Hohensyburg, CampingClub Garenfeld Ruhrbogen e.v., Burg Husen, Wohnmobilstellplatz Herdecke and 3 more
- 8boat hire and water-sport clubs
USC Dortmund e.V., Kayabamba, Kanu-Club Hagen, Herdecker Kanu-Club 1925 e.V, Kanuverein Wasserwanderer Hagen e.V. and 3 more
- 6marinas and slipways
SV Hengsteysee, Kanu Club Hagen and 4 more
- 5ferry piers
Cafe Seeschlösschen, Anleger Herdecke (Ruhr)
- 22viewpoints
Blick auf Hagen, Ruhrtalblick, Panorama über die Ruhr und Hagen Nord, Seeblick, Blick auf die Ruhr/Hagen and 17 more
- 9hotels, B&Bs and chalets
HeimatHerz, Burg Husen, Road Stop, Kötter Hof, Hotel Restaurant Biedermeier and 4 more
- —fishing spots
- 34restaurants and cafés
Towns on the shore
- Herdecke25,618 people
- Syburg1,390 people
Nearest airport with scheduled flights: Dortmund Airport (DTM), 17 km in a straight line.
Car hire at DTM airport (Dortmund)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 | 3.5 | 4.7 | 8.8 | 14.1 | 17.9 | 21.6 | 24.0 | 23.7 | 19.6 | 14.1 | 8.3 | 4.4 |
| 2020 | +2.5 | +3.4 | +0.5 | +2.2 | −0.3 | +0.4 | −0.9 | +3.1 | +2.0 | −0.3 | +1.8 | +0.9 |
| 2021 | −0.9 | +0.8 | +0.4 | −3.5 | −3.1 | +2.3 | −1.3 | −2.7 | +1.3 | +0.4 | −0.8 | +1.2 |
| 2022 | +1.4 | +3.0 | +2.2 | −1.5 | +1.9 | +2.1 | +1.8 | +4.6 | +0.1 | +3.2 | +2.2 | +0.1 |
| 2023 | +2.0 | +2.2 | ±0.0 | −2.0 | +0.3 | +2.3 | −0.7 | −1.1 | +3.9 | +1.9 | +0.2 | +2.0 |
| 2024 | +0.3 | +4.4 | +2.5 | −0.7 | +1.8 | −0.8 | −1.1 | +0.7 | +0.5 | +0.9 | +0.3 | +1.1 |
| 2025 | +0.3 | +0.3 | +2.7 | +2.1 | +0.8 | +1.9 | +0.2 | +1.4 | +0.6 | −0.2 | +0.3 | +1.9 |
+1 warmer than usual −1 cooler than usual
BelgiumAbout 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 (Q450078) · 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.
