A fire is burning in grass and brush on Bureau of Land Management land nine miles southeast of Dufur.  The Oak Canyon Fire has burned 930 acres in light fuels on mostly private land, with no containment reported, and is believed to have been human-caused.  The fire is active with wind driven runs.  31 people are fighting the fire, with four helicopters and six engines, as firefighters work to keep the blaze out of the Deschutes River basin.  There are some high use campgrounds and day use areas threatened by the fire.  Meanwhile, the 488 Fire in the Zigzag Ranger District of the Mount Hood National Forest remains at 11 acres.  Line has been constructed around that fire, but it is not yet considered contained.  An illegal campfire is believed to have started that fire, but no cause has been determined yet.