20240913
09283300
1.0
FALSE
Deposit_Polygons
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
10062100
20240913
10062100
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
20240910
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
Deposit polygons located within Albemarle and Nelson Counties
2024-09-20
Virginia Department of Energy - Geology and Mineral Resources Program
Virginia Department of Energy
Charlottesville, Virginia
vector digital data
Geologic Hazard Map Series
3
This feature class contains slope movement deposit polygons in the Slope Movement Geodatabase. These polygons (map units) show the areal extents of significant volumes of earth, debris, and rock fragments that have accumulated as a result of past debris flows and debris slides and, to a lesser extent, rock falls and rock slides. Three primary types of slope movement deposits have been identified in the study area: debris deposits, talus, and relict landslides.
These data provide an inventory of slope movement deposits 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
biota
ISO 19115 Topic Category
landslide
geologic hazards
slope movement
biota
landslide
geologic hazards
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.
Esri ArcPro 3.1
true
-79.1729
-78.2485
38.2773
37.6276
publication date
2019-01-01
2024-09-20
Where a slope movement deposit 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 deposit 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 known slope movements deposits 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.
Data was created by interpreting a LIDAR digital elevation model (DEM) hillshade and/or slopeshade in the office and mapping in the field using a handheld GPS unit. Areas mapped as slope movement deposits met two or more of the following criteria: 1) exhibited an elongate, lobate or fan shape, or other landform characteristic of a slope movement deposit, visible at a scale of 1:6,000 using the DEM; 2) had an adequate upslope source area where past slope movements could have initiated; and/or, 3) were verified in the field to contain gravel- to boulder-sized clasts or other textures and depositional structures that characterize deposits produced by slope movements (i.e. matrix supported or imbricated clasts, or scour and fill structures). Many narrow stream valleys likely contain slope movement deposits that are not feasible to map at this scale. These 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
1583
Deposit_Polygons
Earth, debris, or rock material that has accumulated from a past slope movement or movements, but not necessarily identified as being associated with a specific known slope movement event or events.
Virginia Department of Energy - Geology and Mineral Resources Program
Feature Class
1583
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Deposit_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.
Project
Name of project for which the data was collected.
Virginia Department of Energy - Geology and Mineral Resources Program
Name of the project for which the data was collected, example Blue Ridge Parkway or Landslide Hazard Mapping.
County
The Virginia county in which the slope movement deposit occurred.
Virginia Department of Energy - Geology and Mineral Resources Program
The Virginia county in which the slope movement deposit occurred.
Quad
The USGS 7.5-minute topographic quadrangle name.
Virginia Department of Energy - Geology and Mineral Resources Program
The USGS 7.5-minute topographic quadrangle name.
Col_Date
Collection Date
Virginia Department of Energy - Geology and Mineral Resources Program
Calendar date the data was collected in year, month, day data format.
Later_Col
Secondary calendar date(s) in which further data was collected
Virginia Department of Energy - Geology and Mineral Resources Program
Secondary calendar date(s) in which further data was collected.
NCGS_Inves
Initials of GMR Investigator(s)
Virginia Department of Energy - Geology and Mineral Resources Program
The initials of GMR staff who visited the slope movement.
Field_Ver
Field states whether the deposit has or has not been visited in the field.
Virginia Department of Energy - Geology and Mineral Resources Program
Field Verified by Data Source 1
Deposit has been field verified by the party/individual mentioned in the field 'Data Source 1'.
Virginia Department of Energy - Geology and Mineral Resources Program
Not field verified
The deposit has not been field verified by GMR staff.
Virginia Department of Energy - Geology and Mineral Resources Program
Field Verified by DMME
The deposit has been field verified by GMR staff.
Virginia Department of Energy - Geology and Mineral Resources Program
Loc_Conf
Confidence in accuracy of latitude-longitude location of the slope movement or slope movement deposit
Virginia Department of Energy - Geology and Mineral Resources Program
GPS
Slope movement deposit has been field verified using handheld GPS with an accuracy within a 10-foot radius.
Virginia Department of Energy - Geology and Mineral Resources Program
Orthophotography
Slope movement deposit has been verified using orthophotography.
Virginia Department of Energy - Geology and Mineral Resources Program
Non-orthorectified photography
Slope movement deposit has been verified using non-orthorectified photography.
Virginia Department of Energy - Geology and Mineral Resources Program
7.5' quad
Slope movement deposit has been field verified using USGS 7.5-minute topographic quadrangle.
Virginia Department of Energy - Geology and Mineral Resources Program
Dep_Type
Deposit Type
Cruden and Varnes (1996); Jackson (1997)
Debris Deposit
A type of slope movement deposit consisting of accumulations of clay-, silt-, and sand-sized particles with gravel-to-boulder-sized rock clasts in various stages of weathering and decomposition. These features are a result of multiple slope movement processes and events of various ages from prehistoric to modern times.
Cruden and Varnes (1996)
Talus
A type of slope movement deposit consisting of accumulations of clast-supported, angular cobble-to-boulder-sized rock fragments. These features form an apron of material below resistant rock outcroppings of quartzite or granite.
Jackson (1997)
Relict landslide
A slope movement deposit identified by its hummocky appearance, indistinct lateral edges and lack of a headscarp.
Virginia Department of Energy - Geology and Mineral Resources Program
Area_Acres
The area of the slope movement deposit in acres.
Virginia Department of Energy - Geology and Mineral Resources Program
The area of the slope movement deposit in acres calculate using the raster calculator in ArcPro.
Data_Src1
The primary source (individual, group, literature reference, etc.) used to obtain information about the slope movement deposit.
Virginia Department of Energy - Geology and Mineral Resources Program
The primary source (individual, group, literature reference, etc.) used to obtain information about the slope movement deposit.
Data_Src2
The secondary source (individual, group, literature reference, etc.) used to obtain information about the slope movement deposit.
Virginia Department of Energy - Geology and Mineral Resources Program
The secondary source (individual, group, literature reference, etc.) used to obtain information about the slope movement deposit.
Pictures
Indication of whether photographs have been taken of the slope movement deposit location.
Virginia Department of Energy - Geology and Mineral Resources Program
yes
Pictures are available for this location.
Virginia Department of Energy - Geology and Mineral Resources Program
no
Pictures are not available for this location.
Virginia Department of Energy - Geology and Mineral Resources Program
Remarks
Text narrative
Virginia Department of Energy - Geology and Mineral Resources Program
Text narrative of any additional information pertinent to entry.
Remarks_2
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
1583
TRUE
FALSE