Sylvan Mounds, Wisconsin

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.

• 1891 USGS Koshkonong quadrangle1:62500
• 1894 USGS Koshkonong quadrangle1:62500, 2 printings
• 1906 USGS Koshkonong quadrangle1:62500, 3 printings
• 1954 USGS Rockford quadrangle1:250000
• 1955 USGS Rockford quadrangle1:250000
• 1958 USGS Rockford quadrangle1:250000, 4 printings
• 1961 USGS Busseyville quadrangle1:24000, 2 printings
• 1961 USGS Fort Atkinson quadrangle1:62500, 2 printings
• 1963 USGS Rockford quadrangle1:250000
• 1980 USGS Lake Geneva quadrangle1:100000

The History of Jefferson County, Wisconsin, Containing ... Biographical Sketches .., published 1879 has no passage naming this settlement, which was common for smaller places. Its township is covered in full.

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 112 fires within 5 miles of Sylvan Mounds between 2003 and 2020, burning about 384 acres in total. 1 started naturally. 5 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:

• Breezy Knoll
• Lake Ripley
• Cambridge
• Kroghville
• Oakland
• Aztalan

Every fire recorded in Jefferson County

Regional context, not property-specific evidence. The federal mineral resources record lists 8 workings within 5 miles of Sylvan Mounds: 5 producers, 3 past producers. 5 still produce. What was taken out: Sand and Gravel, Construction, Stone, Crushed/Broken. 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 Jefferson 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 1575204. 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.