Black Rock Island or [Island]
Island or Feature Name
Black Rock Island or [Island]
Nationality
US
Centroid Lat/Long
442400N 0755022W
Two-Minute Box
44^24′ x 75^50′
Location and description
Northeast (downriver) of Ironsides Island
Former, informal, or alternate names
Municipality
Hammond
County
St. Lawrence
Province / State
NY
Ports?
Book refs
1000islands.co ID #
98
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Data source.