This report describes the HBV model application for inflow forecasting on a daily time step to the Tarbela dam in the Indus River. The model application forms part of the new Tarbela control center for Pakistan's Water and Power Development Authority (W APDA). The new control system will be an ABB S.P.I.D.E.R. SCADA system, delivered on a turnkey basis by ABB Network Control of Sweden. SMHI have as subconsultants to the ABB Network Control been responsible for the set up, calibration, training and delivery of the inflow forecasting system based on the HBV model.