Notice: All Ecology offices remain closed to walk-in service due to COVID-19.
River & stream monitoring produces studies on how much water is in rivers and streams, plants and animals in stream habitats, toxic chemicals in freshwater environments, and environmental management practices.
Lake water quality monitoring contains lake information, including algae, invasive plants, and toxics.
Groundwater quality assessments covers freshwater deep under the ground.
River & stream publications
Rivers and Streams – Annual Water Quality Reports
Stream Bioassessments publications
Effectiveness Monitoring for Water Quality Improvement Projects (TMDLs) publications
Lakes publications
Finding groundwater studies