Krakanoja brook connects to the main channel of the Vantaa River right below the Ruutinkoski rapids. The regionally valuable brook mostly flows in its original riverbed. The brook bed carved in the clay soil meanders a great deal; the water has eroded the outer groove of the brook bed, creating a brook with many sharp twists and turns. Wood matter has travelled with the water, accumulating into dams at many turns of the brook. Krakanoja gets part of its water flow from groundwater, and this spri…ng effect makes the water occasionally very clear.
The brook itself has no plants, but lush vegetation starts right at the edges of the brook bed. Krakanoja flows through a dense grove on both sides of Ylästöntie. Species such as ostrich fern and lady ferns thrive along the brook. In some places, grey alders, bird cherries, rowans and aspens hide the brook from sight with their thick foliage. Spruce forest also grows around the brook.
The brook environment changes downstream. The forest landscape is replaced with a more open zone of trees and shrubs beside an open field view. In many places, the meadow vegetation reaches all the way to the brook bank.
Thanks to the spring's effect, some water also flows in the brook during dry seasons, which means that fish can survive in the brook. Krakanoja is one of the trout spawning streams in the Vantaa River waterway area. Even otters have been spotted around the brook. The thickets along the brook traveling through a field are perfect for common whitethroats, marsh warblers and common rosefinches. Thrush nightingales also nest regularly along Krakanoja.