The Mary Valley scheme has 259 bulk customers. These comprise 205 irrigators in the Mary Valley with 17,528ML of medium priority (MP) water access entitlements (WAE), and 51 in Pie Creek with 835ML of MP WAE.
Major water asset include the Borumba Dam, a concrete faced rock-fill dam with spillway consisting of reinforced concrete crest and chute with reinforced concrete walls which can hold up to 46,000ML.
The Mary Valley scheme includes a distribution system that diverts water from the Mary River into a system of channels:
Calico Creek Channel
Pie Creek Main Channel.