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.
Then and now
1893 to 1994The 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 sheets covering this place
12 surveys from 28 printed sheetsMatched 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.
- 1893 USGS Sonora quadrangle1:125000
- 1896 USGS Sonora quadrangle1:125000
- 1897 USGS Sonora quadrangle1:125000, 8 printings
- 1898 USGS Sonora quadrangle1:125000
- 1947 USGS San Jose quadrangle1:250000
- 1948 USGS Moccasin quadrangle1:24000, 5 printings
- 1948 USGS Sonora quadrangle1:62500, 2 printings
- 1949 USGS Moccasin quadrangle1:24000
- 1956 USGS San Jose quadrangle1:250000
- 1962 USGS San Jose quadrangle1:250000, 4 printings
- 1966 USGS San Jose quadrangle1:250000
- 1994 USGS Oakdale quadrangle1:100000, 2 printings
Fires near this place
203 since 1992Regional 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/undetermined | 76 |
| Equipment and vehicle use | 33 |
| Debris and open burning | 29 |
| Arson/incendiarism | 25 |
| Natural | 13 |
| Recreation and ceremony | 10 |
| Power generation/transmission/distribution | 6 |
| Misuse of fire by a minor | 5 |
| Smoking | 3 |
| Fireworks | 2 |
| Firearms and explosives use | 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 1999 | Natural | 300 acres | Central California District | LIGHTNING 18 |
| 8 September 1997 | Arson/incendiarism | 2.0 acres | Central California District | MARSHES |
| 8 September 1997 | Arson/incendiarism | under an acre | Central California District | RAILROAD |
| 8 September 1997 | Arson/incendiarism | under an acre | Tuolumne-Calaveras Unit | PRIEST #3 |
| 7 September 1997 | Arson/incendiarism | 470 acres | Central California District | PREIST II |
| 6 September 2002 | Arson/incendiarism | under an acre | Central California District | WARDS |
| 5 September 1997 | Misuse of fire by a minor | under an acre | Tuolumne-Calaveras Unit | CAMERON |
| 4 September 2014 | Missing data/not specified/undetermined | 68 acres | Tuolumne-Calaveras Unit | JACKSON |
Settlements close enough to share some of these fires:
Mines and quarries near this place
10 of 184 shownRegional 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 | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Ace of Spades | Chromium, Iron | Producer | 1917 | |
| Ashley Property | Asbestos | Prospect | ||
| Big Oak Flat No. 1 | Gold, Silver, Zinc, Lead, Copper | Past Producer | Chalcopyrite, Copper, Galena, Gold, Sphalerite | |
| La Guria | Gold, Lead, Copper, Silver | Prospect | ||
| Reported Occurance | Gypsum-Anhydrite | Occurrence | ||
| Group | Gold, Lead | Past Producer | Galena, Gold, Pyrite | |
| Groveland-Moccasin-Jacksonville | Gold, Silver | Producer | ||
| Hughes | Manganese | Producer | Psilomelane, Rhodonite | |
| Hughes Property | Manganese | Unknown | ||
| Jack Lode | Gold, Silver | Producer |
Storms near this place
1 since 2018Regional 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.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| March 2018 | Flash Flood | Moccasin | $43,000,000 | A 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. |
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 | Place | Distance | Sheets |
|---|---|---|---|
| Priest | 1.5 miles | 28 | |
| Big Oak Flat | 2.4 miles | 28 | |
| Groveland | 4.0 miles | 30 | |
| Second Garrotte | 5.5 miles | 30 | |
| Chinese Camp | 8.2 miles | 28 | |
| Algerine | 8.2 miles | 28 | |
| Buchanan | 9.3 miles | 29 | |
| Stent | 9.5 miles | 28 |
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 Moccasin | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q12834025 | The 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.











