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Moccasin, California

28 topographic sheets cover this place, the earliest surveyed in 1893 and the latest in 1994. It stands in the Groveland census division. It lies in ZIP code area 95305. It lies near Grizzly Gulch. The Survey maps it on the Moccasin quadrangle. It stands 935 feet above sea level.

Moccasin within Tuolumne County

Then and now

1893 to 1994

The same ground, surveyed 101 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet of Moccasin, surveyed 1994
Topographic sheet of Moccasin, surveyed 1893

Topographic sheets covering this place

12 surveys from 28 printed sheets

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.

Fires near this place

203 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 203 fires within 5 miles of Moccasin between 1992 and 2020, burning about 16,187 acres in total. 13 started naturally. 25 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/undetermined76
Equipment and vehicle use33
Debris and open burning29
Arson/incendiarism25
Natural13
Recreation and ceremony10
Power generation/transmission/distribution6
Misuse of fire by a minor5
Smoking3
Fireworks2
Firearms and explosives use1

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

DateCause SizeReported by Name on the report
9 September 1999Natural300 acresCentral California DistrictLIGHTNING 18
8 September 1997Arson/incendiarism2.0 acresCentral California DistrictMARSHES
8 September 1997Arson/incendiarismunder an acreCentral California DistrictRAILROAD
8 September 1997Arson/incendiarismunder an acreTuolumne-Calaveras UnitPRIEST #3
7 September 1997Arson/incendiarism470 acresCentral California DistrictPREIST II
6 September 2002Arson/incendiarismunder an acreCentral California DistrictWARDS
5 September 1997Misuse of fire by a minorunder an acreTuolumne-Calaveras UnitCAMERON
4 September 2014Missing data/not specified/undetermined68 acresTuolumne-Calaveras UnitJACKSON

Settlements close enough to share some of these fires:

Every fire recorded in Tuolumne County

Mines and quarries near this place

10 of 184 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 184 workings within 5 miles of Moccasin: 56 occurrences, 52 past producers, 37 unknowns, 28 producers. 28 still produce. What was taken out: Gold, Chromium, Copper, Silver. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Ace of SpadesChromium, IronProducer1917
Ashley PropertyAsbestosProspect
Big Oak Flat No. 1Gold, Silver, Zinc, Lead, CopperPast ProducerChalcopyrite, Copper, Galena, Gold, Sphalerite
La GuriaGold, Lead, Copper, SilverProspect
Reported OccuranceGypsum-AnhydriteOccurrence
GroupGold, LeadPast ProducerGalena, Gold, Pyrite
Groveland-Moccasin-JacksonvilleGold, SilverProducer
HughesManganeseProducerPsilomelane, Rhodonite
Hughes PropertyManganeseUnknown
Jack LodeGold, SilverProducer

Every working recorded in Tuolumne County

Storms near this place

1 since 2018

Regional context, not property-specific evidence. The National Weather Service names Moccasin in 1 storm report in 2018: 1 flash 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.

WhenEvent Place namedHarm What the report says
March 2018Flash FloodMoccasin$43,000,000A period of heavy rain upstream from Moccasin Dam, in which about three inches fell during four hours led to significant erosion and at least one landslide. It caused a massive amount of water and debris to run downhill into the Moccasin Reservoir. The water level rose to 3 times the normal reservoir capacity and the emergency spillway was utilized. There was severe erosion of the emergency spillway and potential for the dam to fail. The Power house and staff at the Moccasin Fish Hatchery were evacuated due to potential failure. All the fish in the Moccasin Creek Hatchery were killed when it flooded from the water coming over the emergency spillway. The National Weather Service issued a flash flood warning associated with the probable dam failure, and the sheriff advised residents to avoid the area as a matter of public safety. The warning was reduced to a watch until the reservoir was drained and then the watch was canceled once the reservoir was drained.||Cleanup and repair efforts associated with a major storm that damaged Tuolumne County's Moccasin Creek Dam in March is expected to cost roughly $43 million, according to an estimate by the San Francisco Public Utilities Commission, which owns and operates the dam. That total includes $3.2 million in damage to the state fish hatchery at Moccasin Creek, which lies downstream.

Every storm recorded in Tuolumne County

Nearest settlements

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

Map PlaceDistance Sheets
Priest1.5 miles28
Big Oak Flat2.4 miles28
Groveland4.0 miles30
Second Garrotte5.5 miles30
Chinese Camp8.2 miles28
Algerine8.2 miles28
Buchanan9.3 miles29
Stent9.5 miles28

Elsewhere

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.

Wikipedia article on MoccasinAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q12834025The structured record the population and elevation above come from. Public domain (CC0).

Provenance

This settlement is recorded in the Geographic Names Information System as feature 1659150. 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.