Tassajara, California

The same ground, surveyed 100 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1896 1996

Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.

On the National Register within a mile 1 record

The National Register names another town for these. They stand within one mile of this settlement's coordinate.

• Tassajara One Room Schoollisted 2014 · 0.6 miles away

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

• 1896 USGS Mt. Diablo quadrangle1:62500
• 1898 USGS Mt. Diablo quadrangle1:62500, 7 printings
• 1943 USGS Mt. Diablo quadrangle1:62500
• 1947 USGS San Jose quadrangle1:250000
• 1953 USGS Tassajara quadrangle1:24000, 4 printings
• 1956 USGS San Jose quadrangle1:250000
• 1962 USGS San Jose quadrangle1:250000, 4 printings
• 1966 USGS San Jose quadrangle1:250000
• 1989 USGS Stockton quadrangle1:100000, 2 printings
• 1991 USGS Tassajara quadrangle1:24000
• 1996 USGS Tassajara quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 126 fires within 5 miles of Tassajara between 1992 and 2020, burning about 1,278 acres in total. 2 started naturally. 11 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.

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Settlements close enough to share some of these fires:

• Camino Tassajara
• Blackhawk
• Diablo
• Rock City
• San Ramon

Every fire recorded in Contra Costa County

Regional context, not property-specific evidence. The federal mineral resources record lists 4 workings within 5 miles of Tassajara: 2 prospects, 1 unknown, 1 past producer. None of them still produces. What was taken out: Sand and Gravel, Construction, Stone, Dimension. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Every working recorded in Contra Costa County

Regional context, not property-specific evidence. The National Weather Service names Tassajara in 4 storm reports between 2017 and 2024: 2 debris flow, 2 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.

Every storm recorded in Contra Costa County

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

This settlement is recorded in the Geographic Names Information System as feature 253965. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

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.