Considering the difference and diversity of the riverbed of the Predelica stream we distinguish between:

- the upper part, which includes the area from the border crossing Predel through the upper troughs to the convergence with the Mangrt stream,

- the central part, stretching from this convergence along the sandbanks through the central troughs to the pool supplied by the Poševni slap waterfall and the last Predelica waterfall,

- the lower part, which spreads from this pool through a large rocky hollow in Kreša, where it sinks but soon reappears in the riverbed.


The stream Predelica continues its way through the lower troughs and the village Log pod Mangrtom to the Koritnica River just below the village.