Lappkärret
| Lappkärret | |
|---|---|
(November 2007)
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| Coordinates | 59°22′6.48″N 18°4′6.90″E / 59.3684667°N 18.0685833°ECoordinates: 59°22′6.48″N 18°4′6.90″E / 59.3684667°N 18.0685833°E |
| Primary inflows | Subsoil water |
| Primary outflows | Lilla Värtan |
| Catchment area | 17 ha (42 acres) |
| Basin countries | Sweden |
| Surface area | 2.3 ha (5.7 acres) |
| Average depth | 0.7 m (2 ft 4 in) |
| Max. depth | 1.1 m (3 ft 7 in) |
| Water volume | 16,000 m3 (13 acre·ft) |
| Residence time | 5 months |
| Settlements | Norra Djurgården |
| References | |
Lappkärret (Swedish: (the) Laplander Marsh) is a small lake in Norra Djurgården in north-eastern , Sweden, near . It is one of six lakes in Djurgården, the others being: Lillsjön, Uggleviken, Isbladskärret, Laduviken, and Spegeldammen.
Through its location in the Royal National City Park, it is considered as a lake of great recreational value, especially popular among ornithologists and frequently used in classes at the located nearby. As the name implies, it used to be a marsh until construction works for the student apartments at Lappkärrsberget punctured a subsoil spring in the 1960s. Today, the lake empties into the strait Lilla Värtan through a culvert and forms part of a proposed nature reserve in Norra Djurgården.
Most of the catchment area is composed of open fields and areas of spruce and deciduous forest, with a single trafficked road passing west of the lake. Next to a group of nearby allotment-gardens is a 4-H farmyard with horses and sheep.
Most of the inflow is believed to come from subsoil water with some contribution from stormwater and snow-melting. Local land usage produces small amounts of nutrients and no conduits guides surface water to the lake. The lake is alkali and saliferous with high levels of oxygen, phosphorus, and phosphate, but low levels of inorganic nitrogen. Notwithstanding various levels of chlorophyll, water transparency exceeds the depth of the lake and pH is reported as constant.
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Wikipedia