East of Chico and northeast of Oroville in the Plumas National Forest, the Howland Flat (#31) area is open to ATV riding. This route leaves La Porte on CR513, crosses Slate Creek, then heads north on CR690 at Queen City. At Howland Flat, the route crosses Potosi Creek and heads north to Gibsonville and then back to La Porte.
Note: As of September 2007, ATV riding is only permitted on numbered Forest Service roads and the ATV must have a red or green California ATV sticker.
Overall, Howland Flat is the 104th most popular ATV riding trail of all 106 ATV trails in California.