The area contains shallow eutrophic lakes, meandering streams, reedbeds (Phragmites), riverside meadows (flooded annually), marshland, Alnus forest and Salix thickets. Large parts of the site are used to graze cattle and for haymaking. Human activities also include fishing, bathing and military exercises.
The site is important as a stop-over site for passage swans, geese and ducks, and also supports a diversity of breeding waterbirds, as well as wintering Anser fabalis and five species of raptor. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (wintering) and Crex crex (breeding and passage).
BirdLife International (2020) Important Bird Areas factsheet: River Klingaälv – Lake Kranke. Downloaded from http://www.birdlife.org on 09/07/2020.