Glossary of Mapping Terms

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Below is a list of common terminology in the mapping tool.


BASE MAPS
offer 3 distinct 'template' views of the underlying map

  • Streets shows the viewer streets, roads and rivers
  • Aerial presents an aerial imagery view
  • Topo utilizes a 'quad map' view showing sub-scenes, including roads, elevation, wetlands and waterways


LIVE MAPS
or DATA LAYERS are the layers of collected data (inventory) for the region. The following is the current available inventory for Georgetown County in the mapping tool.

Stormwater Engineering
Parcels – tracts of land, being all or part of a legal estate
Elevation Contours
Soils – particle makeup of soil
Impervious Surfaces

Planning & Zoning
Parcels – tracts of land, being all or part of a legal estate
Flood Zones – geographic areas that FEMA has defined according to varying levels of flood risk
Federal Protected Lands – land managed by federal agencies
Private Protected Lands – land managed by private agencies
State Protected Lands – land managed by state agencies
Urban Areas
Georgetown Zoning
Landuse
Wetlands – area of land which soil is saturated with moisture either permanently or seasonally

Habitat Assessment
Urban Areas
Private Protected Lands – land managed by private agencies
State Protected Lands – land managed by state agencies
Federal Protected Lands – land managed by federal agencies
Cultivated Crops
Deciduous Forest
Developed High Intensity
Developed Medium Intensity
Developed Low Intensity
Developed Open Space
Estuarine Emergent Wetlands
Estuarine Scrub Shrub Wetlands
Evergreen Forest
Grassland Herbaceous
Mixed Forest
Palustrine Emergent Wetlands
Palustrine Forested Wetlands
Paulstrine Scrub Shrub Wetlands
Pasture Hay
Scrub Shrub
Unconsolidated Shore

Water Quality
Dissolved Oxygen Impaired WQMS
Mercury Impaired WQMS
pH Impaired WQMS
Fecal Coliform Impaired WQMS (Rec.)
Fecal Coliform Impaired Shellfish MS
Fecal Coliform Shellfish MS with TMDL
Turbidity


METADATA
describes other data, it provides information about a certain item's content


REAL-TIME USGS DATA
is near 'real-time data' (delivered immediately after collection) received from USGS (U.S. Geological Survey) monitoring equipment stationed throughout the state and including data such as stream flow, stream gage height, reservoir level and ground water level