Trehörningen | |
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Location | Huddinge, Southern |
Coordinates | 59°13′54″N 18°1′18″E / 59.23167°N 18.02167°ECoordinates: 59°13′54″N 18°1′18″E / 59.23167°N 18.02167°E |
Primary inflows | Gömmaren via the brooks Solfagradiket and Fullerstaån |
Primary outflows | Ågestasjön |
Catchment area | 17.9 km2 (6.9 sq mi) |
Basin countries | Sweden |
Surface area | 62.6 ha (155 acres) (excluding islands) 64.0 ha (158 acres) (including islands) |
Average depth | 1.7 m (5 ft 7 in) |
Max. depth | 3.6 m (12 ft) |
Water volume | 1,090,000 m3 (880 acre·ft) |
Residence time | 0.27 years |
Shore length1 | 7,770 m (25,490 ft) (including islands) 7,040 m (23,100 ft) (excluding islands) |
Surface elevation | 21.5 m (71 ft) |
Islands | 3 (area: 1.4 ha or 3.5 acres) |
Settlements | Huddinge |
References | |
1 Shore length is not a well-defined measure. |
Trehörningen (Swedish: "The Triangle") is a small lake located in the municipality Huddinge in southern , Sweden. As part of the Tyresån lake system, Trehörningen receives water from Lake Gömmaren and supplies water to Lake Ågesta.
The area surrounding Trehörningen, Orlången and Ågestasjön, is a fine example of a historical landscape evolving from a prehistoric settlement into a traditional agricultural village discontinued in the 19th century, encompassing structures from all interjacent eras. It is one of the few areas in Stockholm which escaped the creation of the widespread 20th century suburbs around the historical city of Stockholm, and, consequently, the area is considered as having cultural and historical values of national interest. The landscape include open cultivated and grazed fields next to steep rocks, pine and deciduous forests. Several grave fields, hillforts, and other archaeological structures, reflects the area was connected to the Baltic Sea in prehistoric times. During medieval times, the area contained the only farmstead exempt from land dues (i.e. owned by a member of the Swedish nobility) in Huddinge. In the area traces from the Stone Age and some cairns from the Bronze Age have been found, and parts of the present road network is left unaltered for thousands of years.
Three fourth of the catchment area is used for settlements, including the commercial centre of Huddinge (Huddinge Centrum) and half a dozen residential neighbourhoods. Nevertheless, the shores of the lakes are of significant recreational importance as they border the Orlången Nature Reserve and contain several cliffs popular for bathing and angling. Both major inflows, Fullerstaån and Solfagradiket, are guided through culverts under neighbouring settlements, but reaches the lake through open ditches. Today, motor-driven boats are not permitted on the lake and restrictions are imposed on angling.