Qualla: The Rim Fire

The Rim Fire: Introduction

Thu, 02 Apr 2026 00:00:00 GMT

Photo credit Famartin, CC BY-SA 3.0. Thirty-five minutes. That is how long it took the Rim Fire to grow from 40 acres to 150, already throwing spot fires ahead of its main flame front into the dry August air above the Clavey River canyon. By the time the first air tanker arrived at 3:47 p.m. on August 17, 2013, incident commanders already knew the math was working against them. The terrain was too steep for ground crews to engage directly. The vegetation -- pine plantations replanted after 1987 fires, never thinned, uniform in size -- was a loaded gun. And California had entered the summer on below-normal precipitation, leaving fuels parched to dangerous levels. What started as a hunter's illegal campfire in a remote canyon of the Stanislaus National Forest would burn for nine weeks, consume 257,314 acres, and become the largest wildfire in the history of Yosemite National Park.

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Image: Famartin | CC BY-SA 3.0

The Rim Fire: A Landscape Primed to Burn

Thu, 02 Apr 2026 00:00:00 GMT

Photo credit Timjarrett at English Wikipedia, CC BY-SA 3.0. The Rim Fire did not arrive from nowhere. Decades of wildfire suppression had allowed combustible vegetation to accumulate across the Stanislaus National Forest. After large fires swept through in 1987, the Forest Service replanted thousands of acres with pine plantations -- dens...

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Image: Timjarrett at English Wikipedia | CC BY-SA 3.0

The Rim Fire: Ninety Thousand Acres in Two Days

Thu, 02 Apr 2026 00:00:00 GMT

Photo credit Antandrus (talk · contribs), Public domain. The fire's growth was staggering. Within 36 hours, it had consumed 10,000 acres. After four days, 100,000. During a two-day stretch in mid-August, nearly 90,000 acres burned -- an area larger than many national parks. Erratic winds and inaccessible terrain forced firefighters int...

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Image: Antandrus (talk · contribs) | Public domain

The Rim Fire: San Francisco's Water on the Line

Thu, 02 Apr 2026 00:00:00 GMT

Photo credit Matt Frederick at Flickr, CC BY 2.0. The Rim Fire's reach extended far beyond the Sierra foothills. As flames advanced toward the Hetch Hetchy reservoir, San Francisco confronted the possibility that its primary water source -- supplying up to 85 percent of the city's water to 2.6 million customers -- could be compr...

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Image: Matt Frederick at Flickr | CC BY 2.0

The Rim Fire: Fifteen Thousand Under Evacuation

Thu, 02 Apr 2026 00:00:00 GMT

Photo credit Perfect Zero from Los Angeles, CA, US, CC BY 2.0. On the ground, the human toll accumulated in disruption and fear. At the height of the danger, an estimated 15,000 residents were under evacuation order or advisory. Law enforcement command posts went up in Groveland and Tuolumne City, and the mutual aid response became the large...

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Image: Perfect Zero from Los Angeles, CA, US | CC BY 2.0

The Rim Fire: What the Owls Found

Thu, 02 Apr 2026 00:00:00 GMT

Photo credit Penitentes, Public domain. The fire was contained on September 6, 2013, though logs smoldered through the winter and the blaze was not declared fully extinguished until November 2014. What happened next surprised researchers. California spotted owls at 45 breeding sites within the fire perimeter recorded t...

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Image: Penitentes | Public domain