Listed on the National Register of Historic Places in 1999.
From the record
“Reynolds Round Barn was a historic building located near Doon in rural Lyon County, Iowa, United States. In the early 1920s, the original conical roof was damaged due to a windstorm and replaced with a gambrel roof.”
Wikipedia article Charles B. Reynolds Round Barn, CC BY-SA 4.0.
One of 8 National Register listings published here for Lyon County · listed in 1999 · category: Building.
Also known as. Iowa Round Barns: The Sixty Year Experiment TR
Township. Garfield township
National Register reference number.99000737- the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.
Fires near this property
1 since 2016
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 1 fire within 5 miles of Charles B. Reynolds Round Barn
in 2016, burning about 5 acres in total. None started naturally. None was recorded as arson.
Distance is straight-line from the map coordinates, so a fire counted
here may appear on a neighbouring settlement's page as well.
Reported cause
Fires
Debris and open burning
1
The most recent of
them, most recent first, with the day each was reported and the service
that recorded it.
Regional context, not property-specific
evidence. The federal mineral resources record lists
26 workings within 5 miles of Charles B. Reynolds Round Barn: 24 past producers, 2 producers.
2 still produce. What was taken out: Sand and Gravel, Construction. Distance is straight-line from the
map coordinates, so a quarry counted here may appear on a neighbouring
settlement's page as well.
Regional context, not property-specific
evidence. The National Weather Service names
Doon, the town this property stands in, in 34 storm reports between 1994 and 2025: 21 hail, 5 tornado, 4 thunderstorm wind, 2 flash flood.
No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office
filed it, from the NOAA Storm Events Database, and each date
opens the federal record of that event.
A classic spring synoptic situation was taking shape over Iowa. Intense low pressure moved across western Kansas into southern Nebraska. A warm front extended east from the low into Iowa. Warm and moist air was in place over the state. Surface dew point temperatures were in the lower to middle 60s with significant moisture extending above the 850 mb level. Meanwhile, drier air was working its way northeast aloft. Violent thunderstorms erupted during the late afternoon hours over northwest Iowa. There were several reports of tornadoes just to the north of the Iowa/Minnesota border. The storms moved into the northwest part of the state and produced hail, high winds, and funnel clouds. Winds gusted to 63 mph at the Sioux City Gateway Airport. A short time later three-quarter inch diameter hail pelted the area. High winds caused damage in Plymouth County around LeMars. Numerous trees and power lines were downed. Part of a building was destroyed south of LeMars. The local utility company recorded a wind gust of 75 mph. A funnel cloud was sighted a short time earlier west of town. The storms clipped the far northwest corner of the state as well. Winds gusted to 78 mph at Sioux Center, causing damage around town. A funnel cloud was sighted in Lyon County at Alvord. A tornado also touched down in the area, a short distance east of Alvord. It struck two farms, causing extensive damage to each. Several buildings were downed on a farm near Hull, a machine shed, garage, and brooder coop were downed north of Hull. The storms worked their way northeast. Hail the size of quarters was reported later in the evening in Kossuth County, southwest of Algona. During this time, an area of thunderstorms developed over east-central Iowa. One of them dropped hail the size of quarters at Clarence in Cedar County. In Henry County, one-inch diameter was recorded at Mt. Pleasant.
A tornado destroyed a machine shed and a garage. The tornado also uprooted several trees and flattened part of a corn crop. The tornado formed 5 miles east of Doon, then moved south, crossing the county line into Sioux County, where further damage occurred.
A classic spring synoptic situation was taking shape over Iowa. Intense low pressure moved across western Kansas into southern Nebraska. A warm front extended east from the low into Iowa. Warm and moist air was in place over the state. Surface dew point temperatures were in the lower to middle 60s with significant moisture extending above the 850 mb level. Meanwhile, drier air was working its way northeast aloft. Violent thunderstorms erupted during the late afternoon hours over northwest Iowa. There were several reports of tornadoes just to the north of the Iowa/Minnesota border. The storms moved into the northwest part of the state and produced hail, high winds, and funnel clouds. Winds gusted to 63 mph at the Sioux City Gateway Airport. A short time later three-quarter inch diameter hail pelted the area. High winds caused damage in Plymouth County around LeMars. Numerous trees and power lines were downed. Part of a building was destroyed south of LeMars. The local utility company recorded a wind gust of 75 mph. A funnel cloud was sighted a short time earlier west of town. The storms clipped the far northwest corner of the state as well. Winds gusted to 78 mph at Sioux Center, causing damage around town. A funnel cloud was sighted in Lyon County at Alvord. A tornado also touched down in the area, a short distance east of Alvord. It struck two farms, causing extensive damage to each. Several buildings were downed on a farm near Hull, a machine shed, garage, and brooder coop were downed north of Hull. The storms worked their way northeast. Hail the size of quarters was reported later in the evening in Kossuth County, southwest of Algona. During this time, an area of thunderstorms developed over east-central Iowa. One of them dropped hail the size of quarters at Clarence in Cedar County. In Henry County, one-inch diameter was recorded at Mt. Pleasant.
Mud Creek near Lester rose above flood stage the morning of June 21st, cresting around 0.84 feet above flood stage (1375.84 feet) on June 21st. The river then fell below flood stage on the morning of June 22th. For a more comprehensive description of flood damage, please see other entries for Lyon County.
A brief tornado developed on the south side of Doon, and traveled northeast across the southeast side of town before it dissipated at the eastern edge of town. Damage was primarily to trees, with some peripheral damage to a playset near the touchdown, and an older garage near the end of the track. The estimated maximum wind was 85 mph and the average path width was 50 yards.
No historic map-sheet match is published
for this property yet. That does not mean no map exists. This record needs
a coordinate-quality review before it can be joined to a sheet boundary.
Browse the county's mapped places while that work is
pending.
Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.
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