The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive
information, make sure you’re on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website
and that any information you provide is encrypted and transmitted securely.
Upper Midwest Environmental Sciences Center
Juvenile winged mapleleaf mussels produced at USGS in La Crosse: Full resolution
Photo by Shari Greseth, USGS, UMESC, 2004
Usage: This image is public domain/of free use. Please refer to the USGS Copyright section for more details.
