This was closer to 39°17'35"N 84°39'19"W. Wikipedia's bot seems to have confused the later town to the East. See, for example http://wikimapia.org/5592358/Fort-Coleraine Fort Coleraine was next to the earlier riverbed shown here: http://www.ancientohiotrail.com/?q=greatmiami
The Coleraine Historical Society Museum has a model and numerous documents in the former Colerain Township Parks office at 4725 Springdale Road. http://www.werelate.org/wiki/Source:Coleraine_Historical_Society._Coleraine_Pageant
http://www.werelate.org/wiki/User:Robinsonbill/Fort_Coleraine_aka_Dunlaps_Station has a sandbox with a large amount of unedited information.