The Twistesee is a reservoir on the Twiste in the county of Waldeck-Frankenberg in North Hesse, Germany.
The Twistesee with its dam and restaurant (above the overflow funnel of the flood relief tower) and the village of Wetterburg | |
| Location | Waldeck-Frankenberg |
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| Coordinates | 51°23′02″N 09°03′45″E |
| Construction began | 1971[1] |
| Opening date | 1981[1] |
| Dam and spillways | |
| Impounds | Twiste |
| Height (foundation) | 23.5 m (77.1 ft) |
| Height (thalweg) | 21.5 m (70.5 ft) |
| Length | 275 m (902 ft) |
| Elevation at crest | 216.5 m (710.3 ft) |
| Width (crest) | 6 m (20 ft) |
| Width (base) | 135 m (443 ft) |
| Reservoir | |
| Total capacity | 430,000 m3 (15,000,000 cu ft) |
| Active capacity | 9,100,000 m3 (320,000,000 cu ft) [1] |
| Catchment area | 125.1 km² |
| Surface area | 76 ha (0.76 km²)[1] |
| Maximum length | 2.75 km |
| Maximum width | ca. 300 m |

The Twistesee is located at the northern end of the Langer Wald around 30 km as the crow flies west-northwest of Kassel between Bad Arolsen in the west, Volkmarsen to the northeast and Wolfhagen to the southeast. The reason for its construction was the so-called Henry Flood (Heinrichsflut) on 16/17 July 1965 that caused serious damage and destruction in the catchment areas of the Twiste and Diemel rivers. Near one riverside village, Wetterburg, the Twiste was impounded by a dam to form a very large flood retention basin in order to control the water level.
Among the sights in the vicinity of the Twistesee are:
| General |
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| National libraries | |