An official website of the Washington state government
The .gov means it’s official.
A .gov website belongs to an official government organization in the United States.
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.
You’ve come to the right place! It’s still DNR’s website, just more mobile-friendly and accessible.
Click here to access our page-size geologic map of Washington state, which includes a brief explanation of Washington's geologic history.
