GIS - Data Info

About the Data

Parcels

This layer represents the parcel boundaries for Lawrence County. Typically the working county GIS reflects ownership transfers, platting and breakouts 6 to 8 weeks after the filing date with the Register of Deeds Office. Note: From November 1 to April 1 plats, transfers and breakouts filed with the Register of Deeds Office are not processed in the Equalization Office and will not be reflected on this GIS until 6 to 8 weeks after April 1.

Structures

This layer represents structures and address points in Lawrence County. The points are either created with GPS or created using owner input with the aid of aerial imagery. Most structures or address points are located outside city limits.

Roads

This layer represents the Lawrence County 911 roads data. It is created either using GPS or aerial imagery and only shows roads that service a 911 address.

Mineral Surveys

This layer represents mineral survey boundaries in Lawrence County. This was created by several different entities and does not align exactly with any layers. It is useful as another 'opinion' of mineral survey boundaries.

5 Meter Contours

This layer represents the Lawrence County elevation contours.

City Boundaries

This layer represents the current Lawrence County municipality boundaries.

Joint Powers Boundary

This layer represents the area around the Spearfish city limits designated as Joint Powers. Within this area, the city of Spearfish has jurisdiction over Building Permits, Variances, and Flood Plain Administration functions.

3-Mile Extra Boundary

This layer represents the area around the Spearfish city limits designated as the Extra Territorial Jurisdiction (ETJ). Within this area, the city of Spearfish has jurisdiction over the Platting function.

Fire, Voting, Sanitary, School,& Road Districts

These layers represent the current extents of these districts in Lawrence County.

County Zoning

This layer represents the current Lawrence County Zoning outside city limits.

Spearfish Zoning

This layer represents the current City of Spearfish Zoning.

Deadwood Zoning

This layer represents the current City of Deadwood Zoning.

Whitewood Zoning

This layer represents the current City of Whitewood Zoning.

FEMA Flood

This layer is the FEMA Q3 Flood Data. It is a digital representation of certain features of FEMA's Flood Insurance Rate Maps (FIRM). Digital Q3 Flood Data has been developed by scanning the existing FIRM hardcopy and does not reflect any changes from the original publication date. This layer delineates Special Flood Hazard Areas (SFHA)-land areas subject to inundation by a flood that has a 1-percent probability of being equaled or exceeded in any given year. For up-to-date information on flood hazard areas, contact the Lawrence County Planning and Zoning Office or your city flood administrator if you are within city limits or the 3-Mile area around Spearfish.

Arsenic 100PPM

This layer represents the Whitewood superfund boundary. It is provided by Homestake Mining Company.

2012 & 2016 Pictometry Aerial

This data set was flown in the spring of 2012 & 2016 by Pictometry. The imagery consists of 12" ground sample distance.

2004 Orthoimage

This data set contains imagery from the National Agriculture Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S.A primary goal of the NAIP program is to enable availability of ortho imagery within one year of acquisition. NAIP provides two main products: 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 5 meters of reference digital ortho quarter quads (DOQQs) from the National Digital Ortho Program (NDOP) or from the National Agriculture Imagery Program (NAIP); 1 meter GSD ortho imagery rectified to within +/- 6 meters to true ground. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. NAIP quarter quads are formatted to the UTM coordinate system using NAD83. NAIP imagery may contain as much as 10% cloud cover per tile. This file was generated by compressing NAIP quarter quadrangle tiles that cover a county. Two types of compression may be used for 2008 NAIP imagery: MrSID and JPEG 2000. Target values for the compression ratio are (15:1).

Lawrence DRG

This raster layer is a digital representation of the Forest Service quad maps.

Web Site & Data Maintenance

The Lawrence County GIS website along with all data layers are maintained by the Lawrence County GIS Department with the following exceptions:

Roads and Structures layer are maintained by the Lawrence County Emergency 911 Director.

Deadwood Zoning layer is maintained by the City of Deadwood.

FIRM Flood Zones layer is maintained by FEMA.

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