Fire personnel from 27 states are helping fight the Riverside Fire burning in Clackamas County.
The fire has burned 138,020 acres and is 26% contained.
Officials said firefighters are working with partner agencies to mitigate hazards near local communities so that residents can return home safely.
According to firefighters, fire continues to smolder and creep, burning in logs, stump holes, standing dead trees, and deep layers of needles on the forest floor, producing smoke visible within the fire’s perimeter.
On Monday, officials said the fire grew slightly on the east side, in an area where there’s a 45% slope, which is extremely difficult terrain for a crew to work in.
Officials add the safest, most efficient strategy is to monitor the fire where it is burning in rugged area.