Spöl – fed by residual water, but dynamic nevertheless

Is the Spöl stream habitat closer to being a natural watercourse as a result of periodical flooding triggered by human intervention?

As a result of the construction of the Engadine hydroelectric installations in 1970, the Spöl stream only carries residual water; it therefore lacks many of the typical characteristics of a mountain stream. Since the year 2000 a redistribution of the available residual water has allowed the triggering of small floods; this has led to an improvement in ecological conditions in the Spöl.

The waters of the Spöl stream are regularly inspected before and after floods; this includes gathering data relative to the fish population.