Spegeldammen

Spegeldammen
Spegeldammen in November 2007
Coordinates	59°21′56″N 18°4′39″E / 59.36556°N 18.07750°E / 59.36556; 18.07750Coordinates: 59°21′56″N 18°4′39″E / 59.36556°N 18.07750°E / 59.36556; 18.07750
Primary inflows	Subsoil water
Primary outflows	Husarviken, Lilla Värtan
Catchment area	16 ha (40 acres)
Basin countries	Sweden
Surface area	1.1 ha (2.7 acres)
Max. depth	2 m (6 ft 7 in)
Settlements	Norra Djurgården
References

Spegeldammen (Swedish: (the) Mirror Pond) is a small lake in Norra Djurgården in north-eastern central , Sweden. It is one of six lakes in Djurgården, the others being Lillsjön, Uggleviken, Isbladskärret, Laduviken, and Lappkärret.

Located in the Royal National City Park, Spegeldammen is considered of great recreational value and forms part of a proposed nature reserve. It was created in the early 1980s after a shooting range here was closed and is today leased by an angling club for catch-and-release fishery.

The catchment area is dominated by open meadows with oaks in the patches of forest. During most of the 20th century, the area found use as a shooting range, and as a waterlogged marsh where excavated earth and other material was dumped. The range was discontinued in 1978 and shortly thereafter sediments from the nearby Laduviken and other excavated material was disposed within the present catchment area of Spegeldammen, and the lake was created in connection with the housing of the deposits. Today a small pavilion is sitting on the eastern shore of the lake and sheep are grazing the area during summers.

Water contains moderate levels of phosphorus and nitrogen, but sediments contain considerable levels of lead, zinc, cadmium, and copper. Present activities in and around the lake causes insignificant damage, but historical usage still affects the lake through drainpipes. The lake was drained in 2001 and specimen of water leaking out of the lake bed showed considerable levels of phosphorus phosphate and ammonium nitrogen, while levels of nutrients, zinc and copper were low. Specimen of the outflow in 1998, however, showed increased levels of copper, zinc, and to some extent of cadmium, and land specimen in the abandoned embankments of the shooting range showed they contained levels of lead exceeding officially sanctioned levels.