BlockFrom the record
One of 153 National Register listings published here for Waukesha County · listed in 1973 · category: Building.
Sources: the case file at the National Archives · the National Register database, National Park Service
Koepsel House
Listed on the National Register of Historic Places in 1973.
The listing
- What is counted as historic. The nomination lists 1 building as contributing to the listing.
- Address. Old World Wisconsin, off WI 59, Eagle, 53095
- When was it listed? October 1973
- Category. building
- National Register reference number. 73000095 - 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.
Storms near this property
42 since 1995Regional context, not property-specific evidence. The National Weather Service names Eagle, the town this property stands in, in 42 storm reports between 1995 and 2026: 21 thunderstorm wind, 14 hail, 4 tornado, 1 heavy rain. The reports record 17 injuries. 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.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| June 2010 | Tornado (EF2) | Eagle | 15 hurt, $20,600,000 | An EF2 tornado developed about 1.9 miles west-southwest of the Village of Eagle, roughly 1/2 mile south-southeast of the intersection of STH 59 and CTH S, just west of CTH S and west of a horse-riding ranch, and moved east-northeast through the Eagle and then moved due east and then east-southeast before dissipating about 1.94 miles southeast of Jericho, just within Mukwonago County Park, 1000 feet east of Genevieve Drive. Fifteen people sustained minor injuries. One hundred thirty-four homes received minor damage, 67 homes had major damage, and 8 homes were destroyed, mainly in the southern part of the village. Another 75 homes were minimally affected. One business received major damage, while 18 businesses had minor damage. The business that received major damage was a commercial horse-riding ranch/western town at the beginning of the tornado path. Damage was inflicted upon all of the fencing, two trolleys, and 18 tables. One of the biggest buildings on the site was twisted and turned. A donkey was killed, four hayride wagons were lost, and 25 acres of trees were damaged. The owner of the riding ranch saw the tornado and said it looked like the Fourth of July fireworks finale - there were thousands of lightning streaks in the cone. All together, this tornado uprooted or damaged thousands of trees, and at least three dozen vehicles were damaged or totaled. At Old World Wisconsin, an outdoor museum operated by the Wisconsin Historical Society near Eagle, about 2500 tress were damaged at this site alone, and a few buildings sustained minor damage. Overall, Emergency Management officials estimated that residential damage reached $20,577,500, with business damage around $311,500, bringing total private sector damage to about $20,889,000. A few agricultural buildings were damaged, but loss estimates were not available. Public sector structural damage totaled only about $600, while public sector service costs (non-damage) such as debris clean-up, security and public protection, road protective measures, and other miscellaneous expenses were estimated at $101,965. The starting point location was Lat. 42.86785 Lon.-88.50307. The end point location was Lat.42.87100 Lon. -88.40003. The EF-rating was based on DI 2 (FR12) DOD 6 which suggests wind speeds between 125 to 130 mph. On the WSR-88D Doppler radar at the nearby WFO Milwaukee (MKX), a debris-ball appeared near Eagle within a classic hook echo as the parent thunderstorm moved east. |
| June 2011 | Thunderstorm Wind | Eagle | 1 hurt, $276,000 | A 2-mile wide swath of damage was caused by a microburst associated with a bowing line of severe thunderstorms that tracked from southwest to northeast across a large portion of Waukesha County. Wind gusts estimated up to between 100 to 110 mph (87 to 96 knots) dropped thousands of trees, damaged homes and barns and blew down power lines that left 10,000 customers without power in Waukesha County. One person was injured by airborne tree debris near the Pewaukee and Delafield town borders. A semi-trailer truck was blown over on Interstate-94 in Waukesha County, while two other high-profile vehicles were nearly blown over by the strong winds, but concrete construction barriers saved the vehicles from being completely blown over. |
| July 2013 | Lightning | Eagle | 1 hurt | Lightning struck the ground near a group of horse riders in the Kettle Moraine Forest near Eagle. The lightning traveled through the wet ground and passed through two of the horses and one of the riders. The second rider was injured when thrown from her horse after it was struck. |
| October 2002 | Thunderstorm Wind | Eagle | $50,000 | no account filed |
| July 2015 | Thunderstorm Wind | Eagle | $25,000 | Numerous branches and trees down across the county, most concentrated from Genesee to Mukwonago. In addition, a few 2 foot diameter trees downed and shingles blown off a home on North Island on Eagle Spring Lake. Power lines downed in Eagle, Ottawa, and Sussex. A tree fell on a van. |
| May 2024 | Thunderstorm Wind | Eagle | $15,000 | A swath of scattered tree damage and power lines down. |
| November 2022 | Thunderstorm Wind | Eagle | $15,000 | Scattered trees and branches down throughout the county, including power lines. Power outages were reported in Brookfield, New Berlin, and Vernon. |
| July 2015 | Thunderstorm Wind | Eagle | $10,000 | Several branches and trees down across the county. |
| July 2008 | Thunderstorm Wind | Eagle | $10,000 | Powerful thunderstorm wind gusts toppled several large trees and broke branches that brought down some power-lines. |
| June 2024 | Thunderstorm Wind | Eagle | $7,000 | A couple trees uprooted and snapped. A tree down on a car. |
| July 2023 | Thunderstorm Wind | Eagle | $6,000 | About a dozen tree tops from trees with diameter up to 16 inches were snapped off. A ten inch diameter Apple Tree was blown down. |
| June 2024 | Thunderstorm Wind | Eagle | $5,000 | A couple trees uprooted and snapped. A tree down a car. |
| July 2003 | Thunderstorm Wind | Eagle | $5,000 | no account filed |
| September 2012 | Thunderstorm Wind | Eagle | $3,000 | The Waukesha County 911 Center received reports of trees blown down by damaging thunderstorm wind gusts estimated at 56 knots (65 mph) from 5 miles northwest of Eagle to Eagle. |
| June 2014 | Thunderstorm Wind | Eagle | $1,000 | Large tree down. |
| May 1998 | Thunderstorm Wind | Eagle | $1,000 | no account filed |
| May 2025 | Hail | Eagle | - | Pictures provided. |
| April 2025 | Hail | Eagle | - | Picture provided. |
| March 2023 | Tornado (EF1) | Eagle | - | Very short lived tornado with substantial damage to under-construction property and many healthy trees snapped. Heavy debris lofted several hundred yards. Path continued northward and hit a house and bent over a stop sign. |
| July 2023 | Tornado (EF1) | Eagle | - | NWS damage survey found tree damage in a convergent path east of Palmyra. |
| July 2013 | Hail | Eagle | - | A trained spotter reported hail up to 3/4 of an inch in diameter in the Village of Eagle. |
| May 2011 | Hail | Eagle | - | A severe thunderstorm produced hail up to 1.75 inches in diameter in a 4-mile wide swath from the southwest corner of Waukesha County northeast to North Prairie. |
| August 2009 | Thunderstorm Wind | Eagle | - | Police reported trees down in the village of Eagle with estimated wind gusts of 56 knots (65 mph). |
| June 2008 | Thunderstorm Wind | Eagle | - | Powerful thunderstorm winds knocked down a few large trees in the vicinity of CTH Z and N. |
| June 2008 | Tornado (EF0) | Eagle | - | A brief tornado lasting less than a minute was spotted by the Eagle Police Department and Fire Department. Damage was restricted to broken tree branches. The starting and ending locations, with respect to lat/long pairs of numbers, were 42.85852/-88.47545 and 42.85973/-88.47364, respectively. DI #28 (TS), DOD2. Maximum wind speed about 75 mph. |
| July 2006 | Thunderstorm Wind | Eagle | - | Trees down on County Road ZZ. |
| April 2026 | Hail | Eagle | - | no account filed |
| April 2026 | Hail | Eagle | - | no account filed |
| April 2014 | Hail | Eagle | - | no account filed |
| April 2014 | Hail | Eagle | - | no account filed |
| June 2011 | Thunderstorm Wind | Eagle | - | no account filed |
| June 2010 | Hail | Eagle | - | no account filed |
| July 2010 | Funnel Cloud | Eagle | - | no account filed |
| October 2006 | Hail | Eagle | - | no account filed |
| June 2005 | Thunderstorm Wind | Eagle | - | no account filed |
| June 2004 | Thunderstorm Wind | Eagle | - | no account filed |
| July 2003 | Hail | Eagle | - | no account filed |
| May 2001 | Hail | Eagle | - | no account filed |
| September 2001 | Heavy Rain | Eagle | - | no account filed |
| March 2000 | Hail | Eagle | - | no account filed |
| May 1997 | Hail | Eagle | - | no account filed |
| August 1995 | Thunderstorm Wind | Eagle | - | no account filed |
Map coverage status
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
1 within 8 milesOther 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.
| Photograph | Property | Distance | Listed |
|---|---|---|---|
 | Christian Turck House | 5.3 miles | 1973 |
Sources for this property
| National Archives record | The nomination case file for reference 73000095 in Record Group 79. |
| Waukesha County | All 153 listed properties in this county. |
Provenance
- 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.
- 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.