Grand Lake Saint Marys

Grand Lake Saint Marys (HM1R41)

Location: Saint Marys, OH 45885 Auglaize County
Country: United States of America

N 40° 32.368', W 84° 25.037'

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Grand Lake Saint Marys, originally Mercer County reservoir was worlds largest man made lake when constructed in 1837-1841 Water supply for Miami-erie Canal from here to the Maumee River at Defiance - 17603 acres. in 1856 lake level lowered 54 feet to prevent flooding - 15,748 acres - cost $528,222.07 Worlds first offshore oil well drilling occurred here 1891 - Piles were driven to support a platform for derrick and drilling rig - Oil well derricks were as numerous in the lake as the surrounding land area. Erected by the Auglaize County Historical Society 1978
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HM NumberHM1R41
Year Placed1978
Placed ByAuglaize County Historical Society
Marker ConditionNo reports yet
Date Added Friday, March 18th, 2016 at 9:01am PDT -07:00
Locationbig map
UTM (WGS84 Datum)16T E 718726 N 4490840
Decimal Degrees40.53946667, -84.41728333
Degrees and Decimal MinutesN 40° 32.368', W 84° 25.037'
Degrees, Minutes and Seconds40° 32' 22.08" N, 84° 25' 2.22" W
Driving DirectionsGoogle Maps
Area Code(s)419, 567
Closest Postal AddressAt or near OH-364, Saint Marys OH 45885, US
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