TMDL - Development of the 2018 Integrated Report

Final 2018 Clean Water Act Section 303(d)/305(b) Integrated Report for the Central Valley Region

The Central Valley Region did not complete a full assessment of all readily available surface water quality data until the 2020 Integrated Report cycle. As part of the 2018 Integrated Report Cycle the Central Valley Water Board evaluated changes to the 303(d) listing status for impaired waters being addressed by a TMDL or another regulatory program. On June 9, 2021 the USEPA adopted changes to the 2018 303(d) List of impaired bodies.