20190215
11484400
1.0
FGDC CSDGM Metadata
FALSE
OC.OneFootContour
Server=gissqldb2p; Service=sde:sqlserver:gissqldb2p\gispd6; Database=gisvec1; User=oc; Version=sde.DEFAULT
ArcSDE Connection
002
13304896.040019
13469688.672557
340155.253914
508601.042294
1
Projected
GCS_North_American_1983
Linear Unit: Foot (0.304800)
NAD_1983_StatePlane_Michigan_South_FIPS_2113_Feet_Intl
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20190221
19385300
20190221
19385300
John Lesko
Axis Geospatial, LLC
Project Manager
410-822-1441
28640 Mary's Ct, Suite 200
Easton
MD
21601
20190221
ArcGIS Metadata
1.0
Everett Root
DTMB, Center for Shared Solutions
Project Manager
517-373-7910
G.W. Romney Building, 10th Floor 111 S. Capitol Ave.
Lansing
MI
48913
US
roote@michigan.gov
SDE Feature Class
One Foot Contour
2018-12-13
State of Michigan (SOM) Center for Shared Solutions
111 S. Capitol Avenue, Romney Building - 10th Floor, Lansing, MI, 48933, US
State of Michigan (SOM) Center for Shared Solutions
vector digital data
Data collected between 3/29/17 and 5/3/17. Contours created on 12/13/18. The 1-foot elevation contours were presented as a feature class in an Esri ArcGIS 10.3 File Geodatabase. The contours were derived from Bare-Earth (DEMs) created from QL2 LiDAR data. Source Data Description: MI 2016 LiDAR project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1.2. The data was developed based on a horizontal projection/datum of Michigan State Plane South, NAD83(2011), international feet and vertical datum of NAVD1988 (GEOID12A), international feet. Deliverables included classified LAS, Raw LAS, Bare-Earth hydro-flattened DEMs, Breaklines and Intensity images. Ground Conditions: LiDAR was collected in spring or fall, while no snow was on the ground and rivers were at or below normal levels.
Data created for use in planning, design, assessment, research, general mapping and hydrologic modeling.
Contour data created by Axis Geospatial, LLC in Easton, MD. LiDAR and derived DEM source data created by vendors under contract to the State of Michigan.
Everett Root
DTMB, Center for Shared Solutions
Project Manager
517-373-7910
G.W. Romney Building, 10th Floor 111 S. Capitol Ave.
Lansing
MI
48913
US
roote@michigan.gov
Michigan
Oakland County
Spring 2017
elevation
ISO 19115 Topic Category
Contours
Land
EPA GIS Keyword Thesaurus
Hillshade
ISO 19115 Topic Categories
Bare Earth
Land
Hillshade
elevation
Spring 2017
Michigan
Contours
Bare Earth
Oakland County
Surface Topography
Data Store
This data is for planning purposes only and should not be used for legal or cadastral purposes. Any conclusions drawn from analysis of this information are not the responsibility of Axis Geospatial or the State of Michigan. Users should be aware that temporal changes may have occurred since this dataset was collected and some parts of this dataset may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations.
This data may be used by the requested party for stated purposes and should not be re-distributed.
http://project-open-data.github.io/schema/#accessLevel
Standard Technical Controls
This data is for planning purposes only and should not be used for legal or cadastral purposes. Any conclusions drawn from analysis of this information are not the responsibility of Axis Geospatial or the State of Michigan. Users should be aware that temporal changes may have occurred since this dataset was collected and some parts of this dataset may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. The State hereby assigns ownership, including all right, title and interest, subject to the license and restrictions set forth in the MiSAIL SOM SEMCOG Agreement Contours and LiDAR.doc of the LiDAR derived contours to Monroe. Notwithstanding this assignment, the State retains for itself, and Sanilac otherwise grants to the State in consideration of the State’s assignment, a fully-paid-up, royalty free, non-exclusive, unlimited, irrevocable license to use the LiDAR derived contours throughout the World consistent with the purposes, rights and restrictions of the Contract and other applicable laws.
Version 6.2 (Build 9200) ; Esri ArcGIS 10.4.1.5686
-83.694202
-83.074256
42.426155
42.893613
Bare-earth ground condition for Wayne County Michigan.
2017-03-29
2017-05-03
1
-83.694202
-83.074256
42.893613
42.426155
Topologic Validation of contours to identify overlap, intersections, and dangle errors.
Complete
Data were created from Digital Elevation Model data derived from LiDAR data meeting USGS specifications for Quality Level 2 (QL2). From Original Metadata: Horizontal positional accuracy for LiDAR is dependent upon the quality of the GPS/INS solution, sensor calibration and ground conditions at the time of data capture. The standard system results for horizontal accuracy meet or exceed the project specified 1.0 meter RMSE.
Contour data compared to input LiDAR data.
1.0
Data were created from Digital Elevation Model data derived from LiDAR data meeting USGS specifications for Quality Level 2 (QL2). Data were smoothed and therefore do not match the original data perfectly. Accuracy information from Original Metadata: For the DEM data derived from the classified point cloud, the FVA, SVA, and CVA were computed. The vertical accuracy was tested with independent survey check points located in various terrain types. These check points were not used in the calibration or post processing of the lidar point cloud data. The survey check points were distributed throughout the block area. Specifications for this project require that the FVA be 9.25 cm (18.13 cm or better @ 95 percent confidence level).
Contour data were converted to digital elevation model (DEM) data, which was compared to original DEM data to identify variations in elevation values.
0.070
1-foot contours (raw) and a hillshade were generated from all LiDAR tiles. The raw version of the contours were then placed into an ESRI Geodatabase and further processing was performed for the smooth version and placed into a separate ESRI Geodatabase. Depression contours were created as well for the purpose of attribution. All contours less than 100 feet in length were deleted. Remaining 1-foot contours were then attributed as either intermediate, intermediate_depression, index or index_depression through spatial selection and calculation. Newly attributed 1-foot contours were then smoothed by tile using cartographic generalization tools in Esri ArcGIS 10.3. Final smoothed contours were visually checked for overlap, intersection, and dangle errors. Topology was built for all tiles and errors were repaired where found. Most errors were repaired by comparing smoothed contours to raw contours and manually editing line vertices. Other errors were repaired through topologic validation tolerances. All tiles were merged to create a county-wide 1-foot contour dataset.
2018-12-13
John Lesko
Axis Geospatial, LLC
Project Manager
410-822-1441
28640 Mary's Ct, Suite 200
Easton
MD
21601
Bare-Earth Digital Elevation Model (DEM) data. Obtained from the State of Michigan. These data were collected by vendors under contract to the State of Michigan. DEM data meets USGS specifications for QL2 data.
Oakland_2017_1ft_LiDAR_Contours
2015-2017 MiSAIL LiDAR Bare-Earth Digital Elevation Model data
2018-12-13
1.0
Axis Geospatial, LLC.
State of Michigan (SOM) Center for Shared Solutions
111 S. Capitol Avenue, Romney Building - 10th Floor, Lansing, MI, 48933, US
vector data
State of Michigan Counties
2017-03-29
2017-05-03
1778205
OC.OneFootContour
1 ft contours derived from 2017 LiDAR data
State of Michigan (SOM) Center for Shared Solutions
Feature Class
1778205
Type
Type of contour: Index, Index_Depression, Intermediate, Intermediate_Depression
State of Michigan (SOM) Center for Shared Solutions
Contour Type
Contour line type: index, index depression, intermediate, intermediate depression
State of Michigan (SOM) Center for Shared Solutions
Type
String
50
0
0
Shape
Feature geometry.
Esri
Coordinates defining the features.
SHAPE
Geometry
4
0
0
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
10
0
Contour
Contour
Double
8
38
8
SHAPE.STLength()
SHAPE.STLength()
Double
0
0
0
This data contains 1-foot contours that have been edited to improve aesthetic quality while limiting loss of precision and accuracy. Contours have been cartographically-smoothed and all contours whose length was less than 100 feet were removed. Index contours occur every 10 feet. Contours are labeled as either Index, Index_Depression, Intermediate or Intermediate_Depression. This allows for enhanced cartographic representation. Data should not be used for precise analysis requiring survey-level results.
Contours are labeled as either Index, Index_Depression, Intermediate or Intermediate_Depression.
dataset
EPSG
5.3(9.0.0)
Simple
FALSE
1778205
TRUE
FALSE
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