- Aquatic Plant Identification Manual for Washington's Freshwater Plants
- Descriptions, photographs, and line drawings of 100 aquatic plants.
- Discover What Freshwater Plants are Found in Washington Lakes
- Search Ecology's plants database to see which plants are growing in each water body (not all water bodies in Washington have been surveyed).
- Discover What Algae is Growing in Washington Lakes
- Search Ecology's algae database to see if blue-green algae are growing in each water body and if they are toxic (not all algae blooms have been tested).
- Tips for Identifying Aquatic Plants
- Information on how to press plants, prepare for mailing for identification, how to distinguish look-alike aquatic plants.
Washington Invasive Species Council: Stop the Invasion - Report Sightings
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