From a Butte County Sheriff's Office tweet:

The main lobby of the Butte County Sheriff's Office on 5 Gillick Way in Oroville will be closed today and Friday due to the ongoing emergency situation involving the Camp Fire. The Sheriff's Office will remain open to handle emergency matters. If you need to come to the Sheriff's Office to make a report, you can do so at the Butte County Jail main lobby on 7 Gillick Way.