Complex sentence: Wallamba River rises on the northern slopes of Kyle Range, near Gangat, and flows generally east and then south, joined by five minor tributaries, before reaching its confluence with the Coolongolook River at Wallis Lake; descending over its course.
Split into simpler sentences: Wallamba River rises on the northern slopes of Kyle Range, near the locality of Gangat. The river flows generally east and then south, joined by five minor tributaries, before reaching its confluence with the Coolongolook River at Wallis Lake; descending over its course.