The river then flows northeastward through of Pwani Region to empty into the Indian Ocean west of Zanzibar Island.

These plains are bounded on the northwest by the Rubeho, Ukakuru, Nguru, and Nguu mountains, some of the Eastern Arc ranges.

The Eastern Arc Mountains intercept moisture-laden winds from the Indian Ocean, and receive more rainfall than the surrounding lowlands.

[4] Only after leaving the Mkata River basin on the northern edge of the Mikumi National Park is its name Wami.

The average monthly flow of the river Wami hydrological station of Mandera (in m³ / s ) (Calculated using the data for a period of 30 years, 1954–84)[7]