From kangaroo harvests to tire recycling, Gov. Jerry Brown announced Tuesday that his administration has uncovered more than 700 unnecessary state reports.

As part of a cost-cutting review Brown ordered last year, the governor's office released a list of 718 reports it believes are insignificant and outdated, about half of which must be submitted to the Legislature. Some of the reports that agencies and departments have to produce or transmit include an annual report on the kangaroo harvest in Australia and a monthly report on response to the 1989 Loma Prieta earthquake.

Under a state law that allows kangaroo skin shoes and other products into California, the Department of Fish and Game is required to make sure the kangaroo harvest does not exceed Australia's quota. The monthly reports on the Loma Prieta earthquake are considered to be unnecessary after 23 years.

Another requirement directs the Department of Transportation to report on the use of used tires. The state said it will continue to make recycling information public but not turn in a formal report.

"The Legislature wants to get a lot of information and one report leads to another report, and after 10 or 20 years, you have literally hundreds and hundreds of reports," Brown told reporters Tuesday after a speech to the California Medical Association meeting in Sacramento. "It takes time, it's not free."

The administration did not have an estimate on how much the change would save. Brown's spokeswoman Elizabeth Ashford said the goal was to improve worker productivity and reduce some printing and production costs.

Brown, a Democrat, issued his executive order back in December as part of his effort to streamline government and improve state efficiency. He said government should be focused on providing helpful information to taxpayers.

California faces a $9.2 billion budget deficit this year and the governor warned the gap could grow by $1 billion or more. Brown is scheduled to update the Legislature next month.

"I think it will be bigger than it was before," Brown said about various court challenges to state cuts. "Whether it's $1 billion or a couple billion, we'll let you know in a couple weeks."

In response to Tuesday's findings, the administration was expected to end production on about half of those reports. Brown's finance director, Ana Matosantos, asked the Legislature to end reporting requirements on the remaining half.

In a letter dated Tuesday, Matosantos asked the Senate and Assembly to take legislative action on 375 reports that the administration believes "to be no longer of value or are one-time reporting requirements that have already been completed."