Stage 1 fire restrictions, enacted for unincorporated areas of western Boulder County.

Prescribed Burns
Prescribed burn

Prescribed Burn Projects

Parks & Open Space and the Sheriff’s Office Wildland Fire Management Program plan to conduct prescribed burns when conditions allow. Smoke and flames may be visible for up to 72 hours. There may be heavy smoke in the air. Please do not call 911 since a controlled burn is not an emergency. The areas will be monitored to ensure fires are completely out.

Smoke and flames may be visible for up to 72 hours after a controlled burn. There may be heavy smoke in the air. Please do not call 911 since a controlled burn is not an emergency. The areas will be monitored to ensure fires are completely out.

Slash Pile Burning

Parks & Open Space and the Sheriff’s Office Fire Management Program will conduct slash pile burns at several locations this winter.

982 piles have been burned as of April 4.

  • Hall Ranch (west of Lyons)
  • Caribou Ranch (north of Nederland)
  • Mud Lake / Sherwood Gulch (north of Nederland)
  • Reynolds Ranch (east of Nederland)
  • Walker Ranch (west of Boulder)

Burns are scheduled when there is a winter weather system in the area. Operations will be conducted only when there is sufficient snow cover to ensure safe fire operations and containment. Pile burns are conducted to reduce the amount of fuel on the ground as a result of thinning operations. Slash pile burns may require park closures.

Prescribed Burn at Hall Ranch
Jan. 15 – April 15

Nelson Loop Prescribed Burn Project at Hall Ranch.

  • Burn window set for Jan. 15 – April 15. Burns can occur any time during the window.
  • Burn operations are usually scheduled for one to three consecutive days.
  • Property will be closed during ignition days. Park will reopen when deemed safe and if not otherwise closed due to muddy conditions.
  • Crews burned on Oct. 11 and Oct. 25 during the previous burn window.
  • Burn Area Map

Agriculture and Irrigation Ditch Burning
Jan. 29 – April 30

Agriculture burning is done to remove vegetation to control weeds and prepare areas for reseeding. Irrigation ditches are burned to remove unwanted vegetation for improved water delivery, nutrient cycling, and planting success.

Burn projects depend on ideal weather conditions, including relative humidity, fuel moisture, and wind. Projects will only proceed when conditions are suitable. Fire managers will monitor all projects until they are called out. There may be heavy smoke in the air. Please do not call 911 since these controlled burns are not emergencies.

30,750 feet (5.8 miles) of ditches and 21.5 acres have been burned as of April 4.

  • Pella Crossing (11420 N. 75th St.)
  • Walden Ponds Wildlife Habitat (3893 N. 75th St.)
  • Wambsganss property (12210 Niwot Rd.)
  • Marfell Lakes and CMN – Fuhey properties (Arapahoe Rd. and 119th St.)
  • Leggett, Ertl, Dougherty, Piazza, Swanson, and Stromquist Farms properties (Hwy. 287, Niwot Rd, Prospect Rd., East Countyline Rd.)
  • Alexander Dawson property (109th St. and Jasper Rd.)
  • Josephine Roche property (Arapahoe Rd. and 119th St.)
  • Wittemyer Ponds, Bailey-Kenosha Ponds, and Wheeler Ranch properties (12086 Mineral Rd.)
  • Faul and Kragh properties (115th St., Vermillion Rd., and Wasatch Rd.)
  • Doniphan property (115th St. and Lookout Rd.)
  • Gaynor Lake (1217 Fox Hill Rd.)

Email & Text Alerts

Sign up to be notified by email and/or text of upcoming prescribed burns.

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Notification & Updates

  • Public notification of the burns and corresponding park closures will be released at least 24 hours prior to ignition. Updates will be sent out as conditions warrant.
  • Updates will be also be posted on X/Twitter and Facebook.


Boulder County Parks and Open Space, Boulder County Sheriff’s Office Wildland Fire Management, along with numerous local and federal fire departments, will be conducting the burns. The project areas are well contained by trails and roads, and fire hoses and fire engines will completely surround the area during the duration of the burns. Firefighting resources will remain on site until the fire is confirmed as being controlled by significant weather conditions or determined to be out.

Conditions & Weather

To determine if conditions are suitable for ignitions, fire managers assess fuel moisture levels and continuously monitor current and projected weather forecasts. Weather considerations include wind, temperature, relative humidity and air quality. Conditions have to meet certain criteria in order for the prescribed burn to proceed. Fire personnel will stop burning if weather conditions change and do not allow for a safe operation (gusty winds), or the situation becomes unsafe. Weather and safety conditions are monitored constantly.

Wildlife Concerns

  • It is past the breeding season for migratory birds. Resident or migrant birds are mobile and can move out of the burn area, which will comprise only some of the habitats available.
  • Large mammals such as deer and elk are very mobile and can move out of the area. The human activity in the area prior to ignition will likely cause the animals to move.
  • Smaller mammals such as bobcat, fox, skunk, and raccoon will be able to move out of the area or use rocky outcrops and dens.
  • Areas of highest wildlife value have been removed from the burn area. Burn blocks are trending to smaller, such that a variety of (unburned) habitats are available nearby.
  • Since a lot of ground maintenance has been done to guide fire behavior, and to promote more understory/ground fire rather than an intense crown fire, a lot of unburned or lightly burned areas are likely to be left within the fire perimeter.
  • Snakes and lizards will find refuge in burrows, under rocks, and in rocky outcrops.

After the Burn

  • Residual smoke may be visible.
  • Firefighting resources will remain on the prescribed burn until the fire is confirmed as being controlled by significant weather conditions or determined to be out.
  • There are also monitoring plots for important data gathering. These plots were studied before the fire, and researchers will return after the fire to document scientific changes.

Smoke Issues

  • Prescribed fire smoke may affect your health. Learn how to protect your health from wood smoke.
  • During a prescribed burn, smoke is generated and will drift according to wind currents and other atmospheric conditions.
  • Smoke could settle in areas at night when cooler air traps the smoke particles closer to the surface of the ground.
  • Smoke will be visible from Foothills Highway, Lyons, Boulder, Estes Park, Longmont, Fort Collins, Loveland and possibly east to I-25.
  • Children, older adults and people with heart or lung disease are more likely to be effected by smoke.
  • Close windows and stay indoors if you are concerned.

Benefits of Prescribed Fire

  • Reduces hazardous fuels, protecting human communities from extreme fires.
  • Minimizes the spread of pest insects and disease.
  • Removes unwanted species that threaten species native to an ecosystem.
  • Provides habitat for foraging wildlife.
  • Improves habitat for threatened and endangered species.
  • Recycles nutrients back to the soil.
  • Promotes the growth of trees, wildflowers, and other plants.

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