National Register reference number.99000307- 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
3 since 2006
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 3 fires within 5 miles of Shell Rock Bridge
between 2006 and 2009, burning about 21 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
Missing data/not specified/undetermined
3
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
7 workings within 5 miles of Shell Rock Bridge: 6 past producers, 1 producer.
1 still produces. What was taken out: Sand and Gravel, Construction, Stone, Crushed/Broken. 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
Shell Rock, the town this property stands in, in 31 storm reports between 1998 and 2025: 12 thunderstorm wind, 8 flood, 4 tornado, 3 hail.
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.
Tornado developed southwest of Shell Rock and moved along 250th Street. The tornado impacted several farmsteads along 250th producing EF1 damage to buildings and trees at many of the locations. The tornado was also quite wide with the the max width extending over 600 yards. The tornado continued into Bremer county.
Iowa DOT and local law enforcement have closed Highway 3 between County Road T55 near Clarksville and US 218 near Shell Rock due to flooding of the Shell Rock River.
Area of wind damage downstream of the dissipating tornado east of Clarksville. Limb damage to over a dozen trees and an outbuilding with a west facing entrance was pulled from the ground.
Law enforcement reported several large tree limbs, including a few large ones, down throughout the town of Shell Rock. Some were blocking the street. Time estimated from radar.
This tornado developed and quickly moved out of the county and into Bremer county. Only crop damage was noted with this segment of the tornado. Tornado was found and rated using high resolution satellite imagery.
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.
Listed places nearby
2 within 8 miles
Other National Register properties close
enough to walk or drive between, ordered by distance from this one. Both
positions come from the same geocoding pass that matched these properties
to their map sheets.
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.