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| Grizzly Creek Fire | |
|---|---|
| Name | Grizzly Creek Fire |
| Location | Colorado, United States |
| Date | August 10 – September 2, 2020 |
| Area | 32,631 acres |
| Cause | Human-caused (investigation) |
| Buildings | multiple structures damaged |
Grizzly Creek Fire The Grizzly Creek Fire was a 2020 wildfire near Glenwood Springs, Colorado, that burned across the Gunnison National Forest, White River National Forest, and along the Colorado River corridor. The fire prompted large-scale evacuations, road closures on Interstate 70 (Colorado), and a complex multiagency response involving the United States Forest Service, Bureau of Land Management, and local fire districts. It occurred amid the 2020 Western United States wildfire season and intersected with regional infrastructure including the Glenwood Canyon and recreational areas such as the Hanging Lake Natural Area.
The fire ignited in the steep, narrow terrain of Glenwood Canyon near the community of Glenwood Springs, Colorado and the Shoshone National Forest boundary region. The area is traversed by critical transportation corridors including Interstate 70 (Colorado), the Union Pacific Railroad, and the Colorado River, which are adjacent to popular destinations like Hanging Lake, Grizzly Creek Trail, and the Roaring Fork Valley. The site lies within the historical range of frequent wildfires affecting landscapes managed by the United States Forest Service, Colorado Parks and Wildlife, and local jurisdictions such as the Garfield County, Colorado authorities.
The fire began on August 10, 2020, during a period of heightened fire activity across the West (U.S.), notably contemporaneous with the Cameron Peak Fire and East Troublesome Fire. Rapid spread was facilitated by hot, dry conditions and steep canyon wind funnels typical of Glenwood Canyon microclimates. Within days incident management teams from the National Interagency Fire Center and the Rocky Mountain Area Coordination Center established unified command with the Colorado State Forest Service. Evacuations were ordered for portions of Glenwood Springs, Colorado, and Interstate 70 (Colorado) was closed intermittently as fire behavior altered along the corridor. By late August containment lines were established and control efforts transitioned to mop-up and monitoring operations.
Investigators from the Bureau of Land Management and the United States Forest Service conducted origin and cause determinations, coordinating with the Garfield County Sheriff and the Colorado Bureau of Investigation. Initial findings identified human activity as the likely ignition source, prompting inquiries similar to those following other 2020 Western fires investigated by agencies such as the Federal Emergency Management Agency and state fire marshal offices. Evidence collection, witness interviews, and examination of ignition signatures informed the final determination, with legal and administrative follow-ups handled by local prosecutorial authorities in Garfield County, Colorado.
The fire burned approximately 32,631 acres, damaging infrastructure including highway bridges, utility corridors, and recreational facilities within Glenwood Canyon and along the Colorado River. Closures affected long-distance transportation networks such as Interstate 70 (Colorado) and rail services operated by the Union Pacific Railroad, disrupting freight and passenger movements tied to the Western United States economy. Evacuations and smoke impacted communities including Glenwood Springs, Colorado and nearby New Castle, Colorado, while tourism to sites like Hanging Lake Natural Area and the Roaring Fork Valley declined during and after the event. The incident drew attention from statewide entities including the Office of Colorado Governor Jared Polis and the Colorado Department of Public Health and Environment regarding public safety and air quality.
Response entailed coordinated action by the United States Forest Service, Bureau of Land Management, Colorado State Forest Service, local volunteer fire departments, and interagency crews assigned through the National Interagency Fire Center. Tactics included aerial ignition, direct and indirect line construction, and structure protection for assets along Interstate 70 (Colorado) and Glenwood Springs, Colorado. Incident Management Teams rotated through unified command positions, and resources such as hotshot crews, helicopter buckets, and air tankers were staged from bases supported by the Federal Aviation Administration regulations for aerial firefighting. Containment was achieved through combined suppression and favorable weather shifts, with final control declared after extensive mop-up and monitoring.
The fire altered vegetation communities across montane and riparian zones, affecting stands of Gambel oak, Douglas fir, and riparian cottonwoods along the Colorado River. Post-fire risks included increased likelihood of debris flows and sediment delivery to waterways, impacting aquatic species managed by Colorado Parks and Wildlife and habitat connectivity for wide-ranging species such as the American black bear and elk. Burn severity maps informed post-fire assessments by the United States Geological Survey and the Natural Resources Conservation Service for erosion potential and hydrologic change. Smoke from the fire contributed to regional air quality issues monitored by the Colorado Department of Public Health and Environment and the Environmental Protection Agency.
Rehabilitation efforts involved the United States Forest Service Burned Area Emergency Response program, the Natural Resources Conservation Service Emergency Watershed Protection measures, and local restoration initiatives supported by the Colorado Department of Natural Resources. Mitigation included slope stabilization, reseeding, and installation of erosion control structures to reduce post-fire debris flows threatening infrastructure on Interstate 70 (Colorado) and communities such as Glenwood Springs, Colorado. Long-term recovery planning engaged stakeholders including the Garfield County, Colorado commissioners, state agencies, and conservation organizations like the Nature Conservancy to address watershed restoration, recreation access, and fuels reduction projects aimed at reducing future fire risk in the White River National Forest and adjacent landscapes.
Category:2020 wildfires in the United States Category:Wildfires in Colorado