The state’s curtailment of river diversions has drawn lawsuits from eight irrigation districts in and near Stanislaus County, along with San Francisco.

The three filings claim that the State Water Resources Control Board exceeded its authority with the Aug. 20 orders. The plaintiffs also said they did not get enough chance beforehand to make their cases for continued diversions.

One suit was filed Sept. 2 by the Modesto, Turlock, Oakdale and South San Joaquin irrigation districts and San Francisco. It involves the Tuolumne and Stanislaus rivers.