EQC202509itemE

DETP/25/2072

Item E: Draft 2026 Integrated Report Assessment Methodology (Informational) DEQ will present on the progress of the 2026 Oregon Water Quality Integrated Report, including assessment methodology updates and comments received during public comment on the Assessment Methodology. The Assessment Methodology document contains the "decision rules" DEQ will use to compare data and information to existing water quality standards for the development of Oregon's 2026 Integrated Report. The methodology builds on DEQ's protocols from previous Integrated Reports assessments, with the inclusion of a significant revision to the assessment methodology for freshwater biocriteria.