A new fire in Rio Blanco County near its border with Routt County is burning 300 acres near Crosho Lake and has prompted campground evacuations and pre-evacuation orders for nearby homes.

Firefighters are starting to gain ground against the Lee Fire burning in Rio Blanco and Garfield counties, which has grown to become the fifth-largest wildfire in Colorado history.

In Rio Blanco County, the Lee Fire has grown over 116,000 acres and is now the 5th largest in Colorado history, and the Elk Fire has burned nearly 15,000 acres. On Monday, the Crosho Fire sparked near Crosho Lake in Rio Blanco County, and it has grown to over 100 acres overnight and crept into Routt County.