Clarksville, Ohio

The same ground, surveyed 72 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1914 1986

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.

• 1914 USGS Bryan quadrangle1:62500
• 1943 USGS Bryan quadrangle1:62500
• 1953 USGS Fort Wayne quadrangle1:250000
• 1953 USGS Fort Wayne quadrangle1:250000
• 1953 USGS Fort Wayne quadrangle1:250000
• 1953 USGS Fort Wayne quadrangle1:250000
• 1956 USGS Fort Wayne quadrangle1:250000
• 1956 USGS Fort Wayne quadrangle1:250000
• 1958 USGS Butler East quadrangle1:24000
• 1958 USGS Butler East quadrangle1:24000
• 1958 USGS Butler East quadrangle1:24000
• 1958 USGS Butler East quadrangle1:24000
• 1986 USGS Defiance quadrangle1:100000

Museums hold 339 specimens collected within 10 miles of Clarksville (historical) between 1860 and 1973: 339 Animalia. 12 distinct Species records are shown. Collected by D. Jordan et al., GEO MOORE, Gartman, D. (Don) & Trautman, M. B. (Milton Bernard) and others. Each is a physical object with a catalogue number, and each entry opens the museum's record. This is what was collected and kept, not a survey of what lives here - nothing can be concluded from a species being absent.

Image	Species	Year	Collected by	Where, as recorded
	Ameiurus melas (Rafinesque, 1820)	1888	S. Meek	Gordon Creek, Cicero, Ohio
	Aeshna constricta Say, 1840	1944	H. Price	Little (Krill's) Lake
	Boyeria vinosa (Say, 1840)	1944	H. Price	Lost Creek, Bricker Stock Farm on State Route 2
	Pomoxis annularis Rafinesque, 1818	1860	unknown	Hicksville
	Semotilus atromaculatus (Mitchill, 1818)	1860	unknown	Hicksville
	Ericymba buccata Cope, 1865	1884	S. Meek	Hicksville, Ohio
	Etheostoma nigrum Rafinesque, 1820	1884	S. Meek	Hicksville, Ohio
	Notropis cornutus (Mitchill, 1817)	1884	S. Meek	Hicksville, Ohio
	Notropis heterolepis Eigenmann & Eigenmann, 1893	1884	S. Meek	Hicksville, Ohio
	Percina maculata (Girard, 1859)	1884	S. Meek	Hicksville, Ohio
	Ambloplites rupestris (Rafinesque, 1817)	1888	S. Meek	Gordon Creek, Cicero, Ohio
	Ameiurus nebulosus (Lesueur, 1819)	1888	S. Meek	Gordon Creek, Cicero, Ohio

All 339 specimens within 10 miles, at the Global Biodiversity Information Facility.

The federal mineral resources record lists 2 workings within 5 miles of Clarksville (historical): 2 producers. All of them still produce. What was taken out: Sand and Gravel, Construction. 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 Defiance County

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

This settlement is recorded in the Geographic Names Information System as feature 1080760. 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.

Specimens. Global Biodiversity Information Facility (GBIF), https://www.gbif.org/. Only records licensed CC0 or CC BY are used. Records licensed CC BY-NC are excluded because this site carries advertising. Images are checked individually and any whose licence is non-commercial, no-derivatives or unreadable is refused.

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.