20240913
09192200
1.0
FALSE
Slope_Movement_Outlines
002
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot_US (0.304801)
NAD_1983_HARN_StatePlane_Virginia_South_FIPS_4502_Feet
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.1.0'><WKT>PROJCS["NAD_1983_HARN_StatePlane_Virginia_South_FIPS_4502_Feet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",11482916.66666666],PARAMETER["False_Northing",3280833.333333333],PARAMETER["Central_Meridian",-78.5],PARAMETER["Standard_Parallel_1",36.76666666666667],PARAMETER["Standard_Parallel_2",37.96666666666667],PARAMETER["Latitude_Of_Origin",36.33333333333334],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2925]]</WKT><XOrigin>-111140600</XOrigin><YOrigin>-91532100</YOrigin><XYScale>3048.0060960121928</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>2</ZTolerance><MTolerance>2</MTolerance><HighPrecision>true</HighPrecision><WKID>2925</WKID><LatestWKID>2925</LatestWKID></ProjectedCoordinateSystem>
20240913
10101200
20240913
10101200
Anne Carter Witt
Virginia Department of Energy - Geology and Mineral Resources Program
Geohazards Geologist
434.951.6319
900 Natural Resources Drive, Suite 500
Charlottesville
VA
22903
US
anne.witt@energy.virginia.gov
20240920
ArcGIS Metadata
1.0
Anne Carter Witt
Virginia Department of Energy - Geology and Mineral Resources Program
Geohazards Geologist
434-951-6319
900 Natural Resources Drive
Charlottesville
VA
22903
US
anne.witt@energy.virginia.gov
none
Digital Data
https://energy.virginia.gov/geology/FEMA_landslide.shtml
https://energy.virginia.gov/geology/FEMA_landslide.shtml
Enterprise Geodatabase Feature Class
Slope movement outlines within Albemarle and Nelson Counties
2024-09-20
Virginia Department of Energy - Geology and Mineral Resources Program
Virginia Department of Energy - Geology and Mineral Resources Program
Charlottesville, VA
vector digital data
Geologic Hazard Map Series
3
This feature class outlines the areal extent of relatively recent, individual slope movements and older weathered landslides which cannot be associated with a known storm event. Virginia Energy geologists mapped features using direct field observations; 1969, 1972, and 1977 aerial photography scanned and georeferenced for use in a Geographic Information System (GIS); 1994, 1996, 1998, 2002, 2006, 2011, 2013, 2018, and 2022 orthophotography; and a digital elevation model (DEM) derived from a 2.5-foot resolution LIDAR dataset collected in 2016. Features were digitized using ArcPro 3.1 GIS software.
These data provide an inventory of the outlines of recent slope movements and serves as a portion of the deliverables for completion of landslide hazard mapping in Albemarle and Nelson Counties.
Primary authors: Anne C. Witt, Wendy S. Kelly, and Jonathan K. Steinbauer
Anne Carter Witt
Virginia Department of Energy - Geology and Mineral Resources Program
Geohazards Geologist
434.951.6319
900 Natural Resources Drive
Charlottesville
VA
22903
US
anne.witt@energy.virginia.gov
Albemarle County
Blue Ridge
VA
Virginia
Appalachia
Nelson County
geoscientificInformation
ISO 19115 Topic Category
landslide
geologic hazard
slope movement
geoscientificInformation
landslide
geologic hazard
slope movement
Albemarle County
Blue Ridge
VA
Virginia
Appalachia
Nelson County
All users of this electronic data set must read and fully comprehend the metadata prior to use. All electronic and/or hardcopy products (maps, data, and text, etc.) produced by the Virginia Department of Energy - Geology and Mineral Resources Program are considered public information (unless otherwise noted) and may be distributed or copied. When using, distributing or copying this data set as a source, the Originator must be acknowledged. These products are intended to serve for general planning purposes only and are provided on an "as is" basis. This data set shall not be used beyond the limits of the set source scale. This data set does not represent a survey document completed by a licensed land surveyor and should not be utilized as such.
The Virginia Department of Energy (Virginia Energy) provides these geographic data "as is." Virginia Energy makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. Virginia Energy further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at Virginia Energy, no warranty, expressed or implied, is made by Virginia Energy regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall Virginia Energy have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of delivery, installation, operation, or support by Virginia Energy.
Data are available from the Virginia Department of Energy - Geology and Mineral Resources Program
Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.0.6491
true
-79.1469
-78.3029
38.2730
37.5386
publication date
2024-09-20
These slope movement outline locations represent the areal extents of relatively recent landslides and older weathered landslides. They were identified using a combination of 2016 LIDAR, orthophotography, aerial photography, and geologic field work. Where a slope movement outline was field verified, the location is accurate within 10 feet (or the typical accuracy of a GPS unit). Where identified from LIDAR, the slope movement is accurate to the horizontal resolution of the LIDAR dataset.
Feature class topology, geometric, and logical errors were identified and fixed iteratively by GMR staff geologists.
These data represent discrete, point locations of known slope movements outlines documented by the Virginia Department of Energy - Geology and Mineral Resources Program in Albemarle and Nelson County, Virginia as of the completion date of the project.
Virginia Energy geologists mapped features using direct field observations; 1969, 1972, and 1977 aerial photography scanned and georeferenced for use in a Geographic Information System (GIS); 1994, 1996, 1998, 2002, 2006, 2011, 2013, 2018, and 2022 orthophotography; and a digital elevation model (DEM) derived from a 2.5-foot resolution LIDAR dataset collected in 2016. Features were digitized using ArcPro 3.1 GIS software.
2024-06-01
Anne Carter Witt
Virginia Department of Energy - Geology and Mineral Resources Program
Geohazards Geologist
434-951-6319
900 Natural Resources Drive
Charlottesville
VA
22903
US
anne.witt@energy.virginia.gov
1753
Slope_Movement_Outlines
The areal extent of relatively recent, individual slope movements.
Virginia Department of Energy - Geology and Mineral Resources Program
Feature Class
1753
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
Outline_ID
Unique identification number assigned by GMR staff.
Virginia Department of Energy - Geology and Mineral Resources Program
Unique identification number assigned by GMR staff.
Feature_ID
Unique identification number assigned by GMR Staff
Virginia Department of Energy - Geology and Mineral Resources Program
Unique identification number assigned by GMR Staff that links together other feature classes in the slope movement database.
County
County Name
Virginia Department of Energy - Geology and Mineral Resources Program
The Virginia county in which the slope movement occurred.
Quad
USGS 7.5-minute topographic quadrangle
Virginia Department of Energy - Geology and Mineral Resources Program
The USGS 7.5-minute topographic quadrangle name.
Col_Date
Calendar date the data was collected in year, month, day data format.
Virginia Department of Energy - Geology and Mineral Resources Program
Calendar date the data was collected in year, month, day data format.
OutlneType
The type of slope movement outline.
Virginia Department of Energy - Geology and Mineral Resources Program
Weathered landslide
A slope movement in which the headscarp and lateral edges are weathered but identifiable, however the feature cannot be associated with a particular storm event.
Virginia Department of Energy - Geology and Mineral Resources Program
Slide
The downslope movement of a soil or rock mass occurring dominantly on surfaces of rupture.
Cruden and Varnes, 1996
Fall
The detachment of soil or rock along a steep slope with little or no shear displacement. The material then descends through the air by bouncing, rolling or falling.
Cruden and Varnes, 1996
Flow
Type of slope movement in which the water content in the displaced mass is sufficient for the material to liquefy and behave as a viscous fluid.
Cruden and Varnes, 1996
Blowout
A type of slope failure in which water and material bursts forth from the ground and then proceeds downslope as overland flow. Blowouts are possibly caused by excessive pore water pressure.
Hack and Goodlett, 1960
Out_State
Describes what is known about the timing of the slope movement.
Cruden and Varnes, 1996
Inactive
Landslide last moved more than one annual cycle of seasons.
Cruden and Varnes, 1996
Inactive - stabilized
Landslide is inactive because artificial remedial measures have stopped the movement.
Cruden and Varnes, 1996
Reactivated
Landslide is again active after being inactive.
Cruden and Varnes, 1996
Suspended
Landslides that have moved within the last annual cycle of seasons but are not moving at present.
Cruden and Varnes, 1996
Relict
Landslides that have clearly developed under different geomorphic or climatic conditions, perhaps thousands of years ago.
Cruden and Varnes, 1996
Active
Landslide is currently moving.
Cruden and Varnes, 1996
Inactive - dormant
Landslide is inactive, but the cause of the movement remains apparent.
Cruden and Varnes, 1996
Inactive - abandoned
Landslide is inactive because the river that was eroding the toe of the moving slope has changed course.
Cruden and Varnes, 1996
Num_IZs
The number of initiation points within the slope movement outline
Virginia Department of Energy - Geology and Mineral Resources Program
The number of initiation points or primary headscarps contained within the slope movement outline.
Length_ft
Length (feet)
Virginia Department of Energy - Geology and Mineral Resources Program
Length of the slope movement outline in feet, derived used ArcPro geoprocessing tools.
Width_ft
Width (feet)
Virginia Department of Energy - Geology and Mineral Resources Program
The average width of the slope movement outline in feet, derived using ArcPro geoprocessing tools.
Area_Acres
Area (acres)
Virginia Department of Energy - Geology and Mineral Resources Program
The area of the slope movement outline in acres calculated using the field calculator in ArcPro.
Map_Method
Method by which the slope movement outline was mapped.
Virginia Department of Energy - Geology and Mineral Resources Program
Field work
The slope movement outline was mapped in the field by GMR geologists.
Producer defined
Air photo
The slope movement outline was mapped using an aerial photograph.
Producer defined
LiDAR
The slope movement outline was mapped using LiDAR.
Producer defined
Field work and other
The slope movement outline was mapped using a combination of aerial photography, LiDAR and/or field mapping.
Producer defined
See Data Source 1
The slope movement outline was mapped by another party. See Data Source 1 in the associated process point file.
Producer defined
Photo_Vint
Photo vintage
Virginia Department of Energy - Geology and Mineral Resources Program
The earliest vintage (year) of aerial photography that shows the location of the slope movement outline.
Pictures
Indication of whether photographs have been taken at areas within the slope movement outline.
Virginia Department of Energy - Geology and Mineral Resources Program
No
Pictures are not available for this location.
Producer defined
Yes
Pictures are available for this location.
Producer defined
Remarks
Text Narrative
Virginia Department of Energy - Geology and Mineral Resources Program
Text narrative of any additional information pertinent to entry.
DataSourceID
Data Source ID number
Virginia Department of Energy - Geology and Mineral Resources Program
This ID number links back to the Data Source table which contains a citation for the individual slope movement if it was not identified by a GMR geologist.
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
dataset
EPSG
6.3(9.0.0)
Simple
FALSE
1753
TRUE
FALSE