Helena, California

The same ground, surveyed 89 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1909 1998

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 1 record

• Helena Historic Districtlisted 1984

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.

• 1909 USGS Big Bar quadrangle1:96000, 2 printings
• 1915 USGS Big Bar and Vicinity quadrangle1:250000, 5 printings
• 1951 USGS Helena quadrangle1:62500, 5 printings
• 1958 USGS Redding quadrangle1:250000, 5 printings
• 1982 USGS Hayfork quadrangle1:100000
• 1982 USGS Helena quadrangle1:24000
• 1998 USGS Helena quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 125 fires within 5 miles of Helena between 1992 and 2020, burning about 87,143 acres in total. 30 started naturally. 1 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.

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:

• Junction City
• Big Bar
• Bob Hoaglin Place
• Bragdon (historical)
• Bramlet Place
• Burnt Ranch

Every fire recorded in Trinity County

Regional context, not property-specific evidence. The federal mineral resources record lists 63 workings within 5 miles of Helena: 35 past producers, 13 unknowns, 10 occurrences, 3 producers. 3 still produce. What was taken out: Gold, Silver, Platinum, Copper. 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 Trinity County

Regional context, not property-specific evidence. The National Weather Service names Helena in 5 storm reports between 2022 and 2025: 5 heavy rain. 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 Trinity 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 261237. 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.