The Thompson Fire is burning near Oroville in Butte County, California.
The Oroville Dam spillway reopened Tuesday for the first time since a near disaster in 2017.
California water officials say they may have to use the partially rebuilt spillway at Oroville Dam for the first time since they began repairs to the badly damaged structure last summer.
The head of California's water agency says an emergency spillway at the Oroville Dam worked despite extreme erosion that led authorities to order nearly 200,000 people to flee.
Oroville Dam's heavily damaged main spillway is expected to resume releasing water next week as levels continue to rise in the reservoir.
Authorities have lifted an evacuation order for nearly 200,000 California residents who live below a dam with a damaged spillway that threatened to collapse and cause catastrophic flooding.