The Tuolumne-Stanislaus Integrated Regional Water Management Authority is a joint powers authority formed to administer a California Department of Water Resources-approved integrated regional water management plan for the upper Tuolumne River and Stanislaus River watersheds and the Little John Creek watershed within Tuolumne and Calaveras counties and to apply for and administer grants for member agency projects. The Authority has been awarded a $8.1 million DWR 2014 IRWM Drought Grant for five member agency projects. The Authority is headquarted in Sonora, Tuolumne County, California. Sara Lima is the law firm's lead attorney for the Authority.