Fire crews continued to make progress on Sunday battling a wildfire that scorched farmland and threatened homes in Eastern Oregon.

The Central Oregon Fire information center said Sunday that the fire had burned almost 34,000 acres and was about 75 percent contained. They expected full containment by Monday, according to the Associated Press.

The causes of the Scott Canyon fire and the fire at Cottonwood Canyon State Park have not been determined. The fire is burning mostly light grassy fuels and no homes have been damaged.

The fire grew about 9 percent Saturday night, bringing it to almost 8 square miles in size on Sunday. The fire came to within about 200 feet of Highway 206.

Early Saturday night, a new fire started in Cottonwood Canyon State Park. That fire was contained at five acres and the park remained open.

The East Oregonian newspaper reported that the Scott Canyon fire started Thursday, July 21, along the banks of the John Day River and spread toward the community of Mikkalo -- halfway between Arlington and Condon.

Volunteer firefighters from Arlington and Condon worked throughout the night Thursday to protect structures in the fire's path.

Photos: Scott Canyon fire

The wind-driven blaze moved north Friday and wasn't contained.

Gilliam County emergency management coordinator Chris Fitzsimmons on Friday said nobody had to evacuate, but some ranchers moved their animals as a precaution.

Arlington is located along the Columbia River and Condon is roughly 40 miles south.

Watch: Sky 8 video of the fire