West Fork fire (IMAGE) Colorado State University Caption The West Fork fire complex of 2013 was composed of three fires that burned more than 109,000 acres on mostly public lands managed by the Rio Grande and San Juan National Forests. Credit Jonathan Coop, Western Colorado University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.