Diatoms of North America is a collaborative initiative dedicated to documenting the diverse diatom species found in North America. Our goal is to offer accurate information on diatom identification, ecology, and distribution, crucial for assessing the health of lakes and streams. Thanks to funding from various organizations, including the US EPA and USGS, we have developed innovative tools for diatom identification.

Our unique visual key and sorting tool cater to both beginners and seasoned practitioners, helping them identify species accurately. We work closely with federal, tribal, state, and local agencies to bolster water quality assessment efforts. Our Editorial Review Board, comprising renowned experts, ensures the scientific integrity of our content.

As a dynamic resource, we continually update our database with the latest scientific knowledge. Join us in our scientific endeavor to explore and preserve the rich diversity of diatom species in North America