Parent Layer: Planning

Name: Historic FieldSurvey

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Description: This data set contains cultural resource field survey project boundaries and basic survey attributes as recorded at the Florida Master Site File.DATA VERSION: July 2018: This data set updates and replaces all previous versions of the Florida Master Site Field Surveys data layer. This version incorporates newly recorded surveys and updates of previously recorded ones.DATA CURRENCY: Data from the Florida Master Site File are continually updated. On average, the Site File processes 500 additional survey manuscripts each year. This data layer is only current as of the date of this document. Contact the Florida Master Site File for updated data layers.LIMITATIONS OF THE DATA/WARNINGS TO THE USER: The field survey projects data are based on field reports which have been submitted by many and varied individuals, groups, institutions, and cultural resource firms. Submissions to the Site File are sometimes accepted from amateurs as well as professionals. The survey locations are only as accurate as the location information submitted to the Site File by the author or organization producing the report. The accuracy of submitted information cannot always be verified.Survey projects depicted in this coverage vary widely in intensity, scope and quality. Surveys often document only a particular class of cultural resource, such as bridges only or archaeological sites only. It CANNOT be assumed that because an area has been surveyed, all cultural resources in the area have been identified. This coverage is best used as a spatial index to field surveys reported to the Florida Master Site File.This data layer only represents a subset of all research manuscripts on file at the Florida Master Site File and includes archaeological and architectural field survey projects. Other research manuscripts on file at the Site File (but NOT represented in this dataset) include: archaeological excavation reports, unpublished overviews of groups of cultural resources, documents based only on library or archival research, detailed reports on standing structures, and survey reports prepared by the United States Forest Service for projects carried out on National Forest properties.DATA SOURCES AND DERIVATION METHODS FOR DATA: Source data were created by the Division of Historical Resources. The original survey boundary data are based on manuscripts and project maps submitted to the Site File, which were then hand drawn onto USGS 1:100,000 scale metric topographic maps. These paper maps with survey boundaries marked were hand digitized by an outside contractor using AutoCAD and a digitizing tablet. The four corners (NAD27) of these maps were used to place the reference system tics. The AutoCAD files were converted to Arc/Info files in geographic coordinates and joined into a statewide coverage using the Arc/Info 7.2.1. In September 2003 the base coverages were migrated to ArcGIS personal geodatabases and are maintained in that format. In December 2014 the datum of the base data layer was translated from NAD27 to WGS84 using ArcGIS 10.2.1 and a composite transformation (NAD27 to NAD83 NADCON & NAD83 to WGS84 ITRF00). Additions, updates, and maintenance of this data are performed by Site File staff using on-screen digitizing in ArcGIS. Scanned, georeferenced, 1:24,000 scale and 1:100,000 scale USGS topographic maps and ESRI world imagery map services are used as the background for the on-screen digitizing process.

Copyright Text: FLORIDA DIVISION OF HISTORICAL RESOURCES

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