Glen Valley, California
40 topographic sheets cover this place, the earliest surveyed in 1901 and the latest in 1983. It stands in the Lake Mathews census division. It lies in ZIP code area 92508. The Survey maps it on the Steele Peak quadrangle.
Then and now
1901 to 1983The same ground, surveyed 82 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.


Compare 1901 against another survey:
Topographic sheets covering this place
15 surveys from 40 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.
- 1901 USGS Elsinore quadrangle1:125000, 8 printings
- 1901 USGS Riverside quadrangle1:62500, 6 printings
- 1901 USGS Southern California Sheet No. 1 quadrangle1:250000, 6 printings
- 1904 USGS Southern California Sheet No. 1 quadrangle1:250000, 2 printings
- 1942 USGS Riverside quadrangle1:62500, 2 printings
- 1943 USGS Riverside quadrangle1:62500
- 1947 USGS Santa Ana quadrangle1:250000
- 1949 USGS Santa Ana quadrangle1:250000
- 1953 USGS Steele Peak quadrangle1:24000, 2 printings
- 1956 USGS Santa Ana quadrangle1:250000
- 1959 USGS Santa Ana quadrangle1:250000, 3 printings
- 1960 USGS Santa Ana quadrangle1:250000, 2 printings
- 1965 USGS Santa Ana quadrangle1:250000
- 1967 USGS Steele Peak quadrangle1:24000, 3 printings
- 1983 USGS Santa Ana quadrangle1:100000
Fires near this place
1,220 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1,220 fires within 5 miles of Glen Valley between 1992 and 2020, burning about 4,551 acres in total. 4 started naturally. 82 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 | 570 |
| Equipment and vehicle use | 279 |
| Misuse of fire by a minor | 106 |
| Debris and open burning | 104 |
| Arson/incendiarism | 82 |
| Smoking | 51 |
| Recreation and ceremony | 18 |
| Power generation/transmission/distribution | 5 |
| Natural | 4 |
| 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 2020 | Missing data/not specified/undetermined | 1.0 acres | Riverside Unit | IDALEONA RD PERR |
| 9 September 2011 | Debris and open burning | 1.0 acres | Riverside Unit | GARZA RD / WITHERS RD |
| 9 September 2008 | Equipment and vehicle use | 1.0 acres | Riverside Unit | CARROLL |
| 9 September 2006 | Equipment and vehicle use | under an acre | Riverside Unit | VALLEY |
| 9 September 1996 | Equipment and vehicle use | 2.0 acres | Riverside Unit | MATHEWS |
| 9 September 1995 | Equipment and vehicle use | under an acre | Riverside Unit | LOCAL 15179 |
| 9 September 1994 | Equipment and vehicle use | under an acre | Riverside Unit | STATE |
| 9 September 1993 | Misuse of fire by a minor | under an acre | Riverside Unit | STATE |
Settlements close enough to share some of these fires:
Mines and quarries near this place
10 of 28 shownRegional context, not property-specific evidence. The federal mineral resources record lists 28 workings within 5 miles of Glen Valley: 17 past producers, 6 producers, 4 prospects, 1 occurrence. 6 still produce. What was taken out: Gold, Stone, Crushed/Broken, Granite, 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 |
|---|---|---|---|---|
| Middlesworth Clay Deposit | Clay | Past Producer | ||
| Spider Web No. 1 | Copper, Gold | Occurrence | ||
| Crestmore Mine | Limestone, General | Past Producer | Sedimentary | |
| Crestmore Mine | Limestone, General | Past Producer | ||
| Gavilan Hills | Gold, Silver | Past Producer | ||
| Washington Mine | Gold, Silver | Past Producer | ||
| Blue Gray Granite Quarry | Granite | Producer | ||
| Blue Gray Granite Quarry | Granite | Producer | ||
| Blue-Gray Granite Quarry | Granite | Past Producer | ||
| Pit | Granite | Producer |
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 |
|---|---|---|---|
| Woodcrest | 2.2 miles | 45 | |
| Mead Valley | 2.5 miles | 40 | |
| Arnold Heights | 3.3 miles | 43 | |
| Alessandro | 3.4 miles | 43 | |
| West March | 3.8 miles | 43 | |
| Val Verde | 3.9 miles | 40 | |
| March Field | 4.6 miles | 43 | |
| Edgemont | 4.7 miles | 43 |
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.
| Wikidata item Q122596444 | 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 1660678. 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.














