NOTICE: Status of water quality objectives for salinity in the Lower San Joaquin River

From the State Water Resources Control Board:

Based on hydrologic conditions during the water years 2021- 2024 the standard water quality objective 1550 μS/cm, expressed as a 30-day running average, will continue to apply in the lower San Joaquin River between the mouth of the Merced River and Vernalis through at least 30 September 2025. Per the calculations described in the Basin Plan, the Wet year classification for water year 2023 would make it impossible to enter into an Extended Dry period again until 1 October 2026 at the earliest.

Please see the attached memorandum for more information regarding water quality objectives for salinity in the lower San Joaquin River.