Douglas DeNio died peacefully at home on March 23rd, 2026 in Loveland, Colorado. He is survived by his wife, 2 children, 3 grandchildren and sister. He was preceded in death by his parents Thurman and Carol DeNio and brother David. Honoring his career with the National Park Service and National Forest Service, memorial donations may be made online at https://protectnps.org or to: The Coalition to Protect America’s National Parks. 2 Massachusetts Ave NE, Unit 77436. Washington, DC 20013. Phone: 202-819-8622.