Around the lake · History & memorial
The Missionary Ridge Fire
In the summer of 2002, the worst wildfire in La Plata County's history burned through the mountains around Vallecito Lake. It burned for weeks, took 46 homes, and killed one firefighter, Alan Wyatt. This is what happened — and who we remember.
The fire that made its own weather
Nobody who fought it had seen fire behave the way this one did. Flames reached well over 250 feet and burned hot enough to consume aspen, which usually resists fire. The fire doubled back on itself, and at times the only choice was to pull back and let it run.
“Nobody had ever seen that kind of fire behavior before. Everything about it was just off the charts.”
Randy Black, then a volunteer firefighter, now a Durango Fire deputy chief
On June 17, 2002, as the fire pushed toward Vallecito, it generated its own weather: a rotating fire whirl — a “fire tornado” — touched down on the dry, drawn-down lakebed of Vallecito Reservoir, overturning and burning vehicles, campers, and boats left on the flats. Atmospheric scientists at Colorado State and NOAA later studied footage of it, documenting a rotating wall-cloud structure and tree damage comparable to a strong tornado. That summer the reservoir never got even half full, bottoming near 11% of capacity — see 2002 in the lake's record.
Holding the line at the lake
As the fire reached the water, the newly formed San Juan Hotshots deployed for the first time, and the Durango Air Tanker Base ran its first operating season. The people directing the air attack understood what was at stake if the fire crossed.
“I remember calling the air attack, and I said, 'Give me every air tanker and every water dropping helicopter you have because we have to hold the fire here.'”
Shawna Legarza, San Juan Hotshots superintendent
“As we went down Missionary Ridge, I remember all I heard in my headset while we were flying was, 'Oh, my God. Oh, my God. Oh, my God.'”
Butch Knowlton, La Plata County emergency management
The dated reckoning
The U.S. Geological Survey documented the summer's debris flows storm by storm. Around Vallecito, County Road 501 was buried again and again.
- July 11
The first storm — a thunderstorm south of the Vallecito dam. CR 501 and the softball field flooded with ash and mud.
- July 22
Ash and mud reached the reservoir; CR 501 closed from the dam to CR 240. A 400-pound boulder came down; Red Creek flooded.
- July 23 — the big one
The season's only storm with even a ~10-year recurrence. Debris flows ran below Lemon Reservoir on Dry, Shearer, and True Creeks; at least five vehicles — four of them occupied — were swept off CR 240; deposits reached four feet deep with rock clasts to three feet across. Floods crossed CR 501 along the reservoir.
- August 3–29
Repeated flows near the lake through the month. Freeman Creek and Root Creek ran again and again — Root Creek left deposits about ten feet deep and six-foot boulders at the CR 501 junction on August 3.
- September 7
A Stevens Creek flow buried a home more than 200 feet from the channel in tons of rock and mud, with eight-foot boulders; Coon Creek and the Freed and Woodard canyons also ran.
- September 10–12
The longest storm of the summer. Coon and Stevens Creeks, and Root Creek near Vallecito; CR 501 closed at Jack and Dry Creeks near the reservoir.
- September 20 & October 2
The final, diminishing events of a four-month siege.
Chronology: USGS Open-File Report 2007-1289 (pp. 10–11).
Putting the mountain back
Federal Burned Area Emergency Response (BAER) crews raced the monsoon. Of the fire's roughly 73,000 acres, about 23,000 — a third — were recommended for treatment.
23,000of 73,000 acres recommended for treatment
4,626acres given log erosion barriers
250+acres hand-mulched & crimped near Lemon Dam
Near Lemon Dam the work went well past the textbook: 231 acres got log erosion barriers at 90–250 per acre where 40 is typical, and crews hand-spread and crimped straw mulch across more than 250 acres, seeding at 60–75 pounds an acre against a usual 40, plus check dams and debris racks.
To get ahead of the floods, the USGS installed a network of telemetered rain gauges over the burn in just over two weeks, feeding real-time flash-flood warnings to forecasters and county responders — one of the early rapid-warning networks of its kind. That instinct — watch the sky over a scarred watershed and sound the alarm early — is exactly what mattered again twenty-three years later, when dawn gauge alarms gave the valley its warning in the October 2025 flood.
BAER figures: USGS Open-File Report 2007-1289 (pp. 2, 33–39). Rain-gauge network: USGS Fact Sheet FS-036-03.
Sources & notes
Primary sources include the U.S. Geological Survey (Open-File Report 2007-1289 and Fact Sheet FS-036-03), NASA Earth Observatory, NOAA/CIRA at Colorado State University, History Colorado's Colorado Encyclopedia, the Durango Herald's 20-year retrospective (Aedan Hannon, June 18, 2022), the National Fallen Firefighters Foundation, the Wildland Firefighter Foundation, Oregon DPSST, and the Vallecito Community Wildfire Protection Plan (Upper Pine River Fire Protection District). Two books tell the story at length: Bob Thompson, Fire Story — Vallecito Burning (2004), and Jim Greenhill, Fire in the Sky (Durango Herald Small Press, 2002).
Photos: the satellite burn-scar (NASA/ASTER) and the burn-perimeter map (USGS) are public-domain works, credited in each caption. Press and eyewitness photographs of the fire — including the fire-whirl footage, which comes from a private video — and photographs of Alan Wyatt are copyrighted by their owners and are not shown here. If you hold rights to a Missionary Ridge photo and would like to share it, please get in touch.
Corrections and additions are welcome — this is a living community record. How to suggest a correction →