Listed on the National Register of Historic Places in 1997. 13 historic topographic surveys show this location, the earliest from 1900.
From the record
“The Joel McCrea Ranch in Thousand Oaks, California is also known as the August DuMortier Ranch. The ranch is a rare surviving example of the large cattle ranches and fields of grain which once dotted the Santa Rosa and Conejo valleys in eastern Ventura County.”
Wikipedia article Joel McCrea Ranch, CC BY-SA 4.0.
One of 39 National Register listings published here for Ventura County · listed in 1997 · category: District.
National Register reference number.97000295- 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.
Then and now
1900 to 1979
The ground this property stands on, surveyed
79 years apart. Drag the handle to wipe between them. Both sheets are
United States Geological Survey originals; neither has been altered.
19001979
Fires near this property
58 since 1994
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 58 fires within 5 miles of Joel McCrea Ranch
between 1994 and 2020, burning about 6,943 acres in total. 3 started naturally. 2 were 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
39
Equipment and vehicle use
4
Misuse of fire by a minor
4
Smoking
3
Natural
3
Arson/incendiarism
2
Recreation and ceremony
1
Fireworks
1
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.
Date
Cause
Size
Reported by
Name on the report
9 September 2015
Missing data/not specified/undetermined
under an acre
Santa Monica Mountains National Recreation Area
LATIGO
28 September 2005
Missing data/not specified/undetermined
30 acres
California Department of Forestry & Fire Protection
not named
27 September 2010
Missing data/not specified/undetermined
42 acres
Santa Monica Mountains National Recreation Area
HAMPSHIRE
10 September 2007
Missing data/not specified/undetermined
100 acres
California Department of Forestry & Fire Protection
not named
30 August 2009
Arson/incendiarism
1.0 acres
California Department of Forestry & Fire Protection
not named
25 August 2019
Missing data/not specified/undetermined
under an acre
Ventura County Fire Department
not named
18 August 1994
Natural
under an acre
San Bernardino National Forest
not named
17 August 2005
Equipment and vehicle use
1.0 acres
California Department of Forestry & Fire Protection
Regional context, not property-specific
evidence. The federal mineral resources record lists
7 workings within 5 miles of Joel McCrea Ranch: 4 past producers, 1 occurrence, 1 producer, 1 prospect.
1 still produces. What was taken out: Sand and Gravel, Construction, Nickel, Copper, Stone, Crushed/Broken, Copper, Nickel. 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
Thousand Oaks, the town this property stands in, in 3 storm reports between 1998 and 2000: 1 thunderstorm wind, 1 flood, 1 wildfire.
The reports record 2 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.
A severe thunderstorm produced strong winds in the community of Thousand Oaks. Twelve power poles were knocked down along Thousand Oaks Boulevard. Six automobiles were struck by these fallen power poles.
United States Geological Survey topographic
sheets whose coverage includes this point. Matched by taking the middle of the area the National Park Service maps for this listing, then
testing that coordinate against the published boundary of every sheet.
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.
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