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.
On Saturday, routine quarterly maintenance will be performed, and some DNR systems may be offline.
Click here to access our page-size geologic map of Washington state, which includes a brief explanation of Washington's geologic history.
