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Geographic Information Services (GIS)

Under the leadership of Mr. David Garber, the Geographic Information Systems (GIS) Department offers spatial data services through an array of systems, providing access to a wide variety of geographically referenced information.

Mission: To develop and support spatial information that is available to all County organizations, and to assist each department in providing high-quality service to the people of Dorchester County in a friendly, cost-effective manner.

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What is a GIS?

GIS is a computer system capable of holding and using data describing places on the earth's surface.

GIS doesn't hold maps or pictures - it holds a database.  The database concept is central to a GIS and is the main difference between a GIS and drafting or computer mapping systems, which can only produce a good graphic output. 

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Helpful Links

On Line Mapping (Old format mapping search)

 

Property Lookup Without Mapping (Table based Assessors Old Web Site Search)

 

PDF Format Maps Pre built maps for download and user printing

 

FEMA Flood Information Mapping  External FEMA Site

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Maps

Road Atlas - Basic  (260 page PDF with all current roads address ranges and Subdivisions)

Road Atlas - Political  (260 page PDF As above plus Precincts and Voting District Combo)

Please see the County Council page on this site to view Council District maps

 

Other Dorchester County Maps

Dorchester County Preliminary Roadway Recommendations

Dorchester County Recommended Bicycle Facilities  

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Data Layers

Core Data Sets are available for purchase after approval of the Limited Use Agreement.

Please submit both a completed copy of the agreement and a completed Data Order Form for prompt service. 

Custom Mapping and Research are available upon request for a nominal charge.  

Available Data Sets:

Note: This is not a complete list. Only the most popular layers are listed below.

Layer Name   

Description

Type

Update Status

Parcels

Current and Future Parcels with data.
Real Property Information attached, start of Tax Year

Polygon

Quarterly

Tax Districts   

Tax Districts and Incorporation Limits

Polygon

Quarterly

Roads

Roads centerline with address range, maintenance owner and functional class

Line

Quarterly

Addresses

Address points

Point

Quarterly

Subdivisions

Formal subdivisions

Polygon

Quarterly

Zoning

Zoning, County only - not incorporated areas

Polygon

As needed

LiDAR

LiDAR and terrain derivatives, Contours DEM, Break lines, etc.
2007 6 cm RMSE 1 meter posting county-wide.

Vary

Static

2007 Ortho Photo

Feb 2007 0.5 foot pixel county-wide coverage.

Vary

Static

2003 Ortho Photo

January 2003 1 foot pixel rural areas, 0.5 foot urban areas

Vary

Static

 

 Charges vary on access, format and data type requested.

See Data Order Form

 

 

Last updated: 6/16/2017 3:30:17 PM