BlockFrom the record
One of 73 National Register listings published here for Sonoma County · listed in 1977 · category: District.
Sources: the case file at the National Archives · the National Register database, National Park Service
Walters Ranch
Listed on the National Register of Historic Places in 1977. 12 historic topographic surveys show this location, the earliest from 1920.
The listing
- Address. 6 mi. S of Healdsburg at 6050 Westside Rd., Healdsburg, 95448
- When was it listed? October 1977
- Category. district
- Census division. Healdsburg
- National Register reference number. 77000351 - 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
277 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 277 fires within 5 miles of Walters Ranch between 1992 and 2020, burning about 298 acres in total. 3 started naturally. 17 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 | 138 |
| Equipment and vehicle use | 65 |
| Debris and open burning | 26 |
| Arson/incendiarism | 17 |
| Misuse of fire by a minor | 13 |
| Power generation/transmission/distribution | 7 |
| Recreation and ceremony | 5 |
| Natural | 3 |
| Smoking | 2 |
| Other causes | 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 2012 | Missing data/not specified/undetermined | 1.0 acres | Sonoma-Lake Napa Unit | SUNSET |
| 9 September 2004 | Equipment and vehicle use | 1.0 acres | Sonoma-Lake Napa Unit | FELTA |
| 8 September 1996 | Missing data/not specified/undetermined | 2.0 acres | Sonoma-Lake Napa Unit | MILL |
| 7 September 2020 | Missing data/not specified/undetermined | 40 acres | Sonoma-Lake Napa Unit | not named |
| 7 September 2016 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | MARTINELLI RD / RIVER RD |
| 7 September 1992 | Arson/incendiarism | under an acre | Sonoma-Lake Napa Unit | WESTSIDE |
| 7 September 1992 | Arson/incendiarism | 5.0 acres | Sonoma-Lake Napa Unit | EASTSIDE |
| 6 September 2005 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | not named |
Mines and quarries near this property
10 of 46 shownRegional context, not property-specific evidence. The federal mineral resources record lists 46 workings within 5 miles of Walters Ranch: 17 producers, 14 occurrences, 13 unknowns, 2 past producers. 17 still produce. What was taken out: Sand and Gravel, Construction, Mercury, Stone, Copper. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Blue Rock Pit and Mill | Stone, Dimension | Unknown | ||
| Unnamed Prospect | Gold | Occurrence | ||
| Unnamed Prospect | Iron | Occurrence | ||
| Wall Tract | Copper, Mercury | Occurrence | Vein | |
| Canyon Rock Quarry | Stone, Crushed/Broken | Producer | ||
| Inman Shale Quarry | Stone, Crushed/Broken | Producer | ||
| Archer | Copper | Past Producer | Vein | |
| Archer Tract | Copper | Unknown | ||
| Dreamland Mine | Manganese | Producer | ||
| Rowan Deposit | Manganese | Occurrence |
Storms near this property
6 since 2014Regional context, not property-specific evidence. The National Weather Service names Healdsburg, the town this property stands in, in 6 storm reports between 2014 and 2020: 3 flood, 1 flash flood, 1 debris flow, 1 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.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| December 2014 | Flash Flood | Healdsburg | $5,000 | Flash flood swept SUV off road and into Dry Creek. |
| December 2014 | Flood | Healdsburg | $1,000 | Foss Creek over banks and flooding Vine and Grove. Law enforcement closed roads. |
| December 2014 | Flood | Healdsburg | $1,000 | Law enforcement reports numerous road closures due to flooding in Healdsburg. Intersections included Piper at East, Center at Grant, Piper at Healdsburg, and Center at Mitchell. |
| March 2020 | Hail | Healdsburg | - | Pea-sized hail reported in Geyserville. |
| January 2019 | Debris Flow | Healdsburg | - | Rock slide in roadway covering road. |
| February 2019 | Flood | Healdsburg | - | Roadway flooding on SB Hwy 101 off ramp at Mill Street. |
Maps showing this location
12 surveysUnited 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.
- 1920 USGS Healdsburg quadrangle1:62500
- 1933 USGS Healdsburg quadrangle1:48000
- 1940 USGS Healdsburg quadrangle1:62500 - 3 printings
- 1947 USGS Santa Rosa quadrangle1:250000
- 1949 USGS Santa Rosa quadrangle1:250000 - 2 printings
- 1955 USGS Healdsburg quadrangle1:24000 - 3 printings
- 1955 USGS Healdsburg quadrangle1:62500 - 2 printings
- 1958 USGS Santa Rosa quadrangle1:250000 - 3 printings
- 1962 USGS Santa Rosa quadrangle1:250000
- 1964 USGS Santa Rosa quadrangle1:250000
- 1972 USGS Healdsburg quadrangle1:100000 - 2 printings
- 1993 USGS Healdsburg quadrangle1:24000 - 2 printings
Listed places nearby
6 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 |
|---|---|---|---|
 | Cunningham-Hembree Estate | 3.3 miles | 2018 |
 | Healdsburg Memorial Bridge | 4.6 miles | 2011 |
| Healdsburg Memorial Bridge | 4.6 miles | 2011 |
 | Madrona Knoll Rancho District | 4.7 miles | 1987 |
 | James H. and Frances E. Laughlin House | 4.9 miles | 1979 |
 | Healdsburg Carnegie Library | 5.7 miles | 1988 |
Sources for this property
| National Archives record | The nomination case file for reference 77000351 in Record Group 79. |
| Sonoma County | All 73 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.
- 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.