SAN FRANCISCO (AP) – A new federal audit says the U.S. government improperly spent $84 million to help plan for California’s massive proposed water project.

The audit by the inspector general’s office of the U.S. Interior Department obtained by The Associated Press Friday says federal officials contributed the taxpayer money to Gov. Jerry Brown’s plans to build two giant water tunnels.

READ MORE: Sheriff: Man Accused Of Threatening His Family With A Gun, Shooting Woman At Linda Home

The audit says that California water districts and not federal taxpayers were supposed to bear the costs of the $16 billion water project.

READ MORE: 2 Hurt In North Sacramento Shooting On Lampasas Avenue

The inspector general says federal authorities also did not fully disclose to Congress or others that it was covering much of the cost of the project’s planning.

The project would ship Northern California water to Southern California.

MORE NEWS: Suspect Remains Hospitalized In Wrong-Way Crash On I-80 That Killed 4

Copyright 2017 The Associated Press.