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DEQ produces a statewide water quality status and trends report each year. The analysis is intended to answer these four questions:
DEQ conducts this analysis by assembling surface water quality data and information about watershed restoration or protection actions implemented from readily accessible public databases, comparing these water quality data to the appropriate Oregon water quality standards or TMDL targets, and determining the status and trends where data and information of sufficient quality and quantity are available. Results are summarized for each of the 19 administrative basins in Oregon as well as the Columbia and Snake Rivers.The results of this analysis informs DEQ, other state and federal agencies, and the public on the condition of waters and if TMDL targets are being achieved; if water quality is improving or degrading; the pace of improvement or degradation; what actions, if any, are being taken to improve water quality, and where water quality data are and are not being collected.
Basin Tabular Results:
View water quality status and trends in your area using the Results Mapper
Water Quality Analyst
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