Oakdale Irrigation District is part of 2 GSAs. Stanislaus and Tuolumne Rivers Groundwater Basin Association GSA to the South, and OID's own GSA in the Eastern San Joaquin Groundwater Authority (ESJGA) in the North. No allocation at this time for Oakdale Irrigation District GSA. The OID GSA does not currently have groundwater pumping allocations, as OID primarily relies on surface water from the Stanislaus River and uses groundwater only as supplemental supply when necessary.