Ormputten is a pseudo-lake[1] in Stockholm County, Södermanland, Sweden. It is slowly retracting, and may soon become a bog. The water surface is very small, fairly round in shape, surrounded by quagmire and strongly acidic with a pH of about 3.9.[2] The lake is situated in the Paradiset nature reserve, and requires a short hike through pathless terrain to access.
| Ormputten | |
|---|---|
 Ormputten in May 2017 | |
  Ormputten | |
| Coordinates | 59°09′26″N 18°02′47″E / 59.15722°N 18.04639°E |
| Basin countries | Sweden |
| Surface area | ~2,500 m2 (27,000 sq ft) |
| Max. depth | 0.8 m (2 ft 7 in) |
| Shore length1 | 160 m (520 ft) |
| Surface elevation | 81 m (266 ft) |
| 1 Shore length is not a well-defined measure. | |