North American Database of Archaeological Geophysics

Database Report:

Site Name: Johnson's Island Confederate Stockade Cemetery; Site Number: _____; County: Ottawa; State: Ohio; Country:USA; Ownership: State; Landform:Island;

Date of Site: AD 1862-1865; Period Type: Historic; Culture: Euroamerican; Site Type: Cemetery; Site Size: 121 hectare;

Survey Type: Ground Penetrating Radar;

Instrument: RAMAC GPR 200 MHz antenna; Sampling Interval: 0.2 ft; Prospecting Depth: 1-1.5m; Area Surveyed: 1,850 sq m; Date of Survey:May 26, 2000; Land Cover Type: Mowed Grass; Ground Truthing: No;

Graphics/Imagery:

GPR image showing a soil horizon that was used to identify disturbances that may indicate graves.	GPR image that exhibits a well-pronounced reflection that is likely an air-filled or metallic coffin at approximately 0.8 meters deep.
Interpretation of graves from survey. Red indicates possible coffin, blue-filled indicates well defined soil disturbance, and blue-unfilled indicates possible grave based on soil disturbance.

Project Name: Johnson's Island Confederate Stockade Cemetery, Sandusky Bay, Ohio;

Reference: Johnson, W.J., D.W. Johnson, G. Gozdzik (2001). Geophysics Comes of Age in North American Archeology. Paper Presented at Society of American Archaeology, 66th Annual Meeting, New Orleans, Louisiana, April 18-22, 2001.

Survey by: D'Appolonia Environmental Services, Inc. 275 Center Road, Monroeville, PA 15146-1451, Phone: (412) 856-9440, Fax: (412) 856-9535, email: wjjohnson@dappolonia.com

Survey for: Center for Historic and Military Archaeology (CHMA) of Heidelberg College, Tiffin, Ohio;

Report Location: D'Appolonia Environmental Services, Inc. 275 Center Road, Monroeville, PA 15146-1451, Phone: (412) 856-9440, Fax: (412) 856-9535, email: wjjohnson@dappolonia.com;

Report Type: CRM Report;

Abstract/Summary