2026 California Integrated Report

For the 2026 California Integrated Report, data from waterbodies in the North Coast, Lahontan, and Colorado River Basin Regional Quality Water Boards will be assessed as “on-cycle’ assessments. Data from waterbodies within the San Joaquin River sub-area in the Central Valley Regional Water Board will be assessed as “off-cycle” assessments. San Joaquin River sub-area is defined as the San Joaquin River watershed and includes the mainstem of the San Joaquin River upstream the legal boundary of the Sacramento-San Joaquin Delta and all surface waters tributary to the mainstem.

Project Timeline

Spring 2025 Spring 2025 Spring 2025 Winter 2025 Winter 2025/2026 Spring 2026
Draft Staff Report release Public Review and Comment Period Hearing on the proposed statewide 303(d) List Release of Revised Staff Report and Response to Comments Adoption Meeting on proposed statewide 303(d) list Submittal to U.S. EPA