The NSW Roads & Traffic Authority (RTA) is proposing to duplicate five sections of the Hume Highway south of its intersection with the Sturt Highway to north of Albury. This report covers the hydrology, hydraulics and water resources of two sections, from Yarra Yarra to Holbrook and Woomargama to Mullengandra. If constructed, the dual carriageways will provide improved conditions for road users, increasing the level of service, road safety and freight efficiency.