20190814
10433900
1.0
FGDC CSDGM Metadata
FALSE
2015ContoursForMar
13237500.960729
13369998.999970
465000.969173
629999.057224
1
002
0.000
https://www.arcgis.com/sharing/rest/content/items/3919ba1e5d454b45ade477ab3b1fc1eb/info/thumbnail/ago_downloaded.png
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot (0.304800)
NAD_1983_HARN_StatePlane_Michigan_South_FIPS_2113_Feet_Intl
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20251230
14204700
20251230
14204700
150000000
5000
FGDC
Robert Goodwin
RS&GIS, MSU
Sr. Geospatial Analyst
(517) 432-0879
673 Auditorium Road
213 Geography, MSU
East Lansing
MI
48824
goodwinr@msu.edu
http://www.rsgis.msu.edu/
Esri 10.3
Shapefile
Ken Koleda
Genesee County
GIS Director
1101 Beach St.
Flint
MI
48502
kkoleda@co.genesee.mi.us
US
810-257-3163
False
Ken Koleda
0.000
2016-05-31T00:00:00
2017-05-01T00:00:00
State of Michigan (SOM) Center for Shared Solutions
111 S. Capitol Avenue, Romeney Building - 10th Floor
Lansing
MI
48933
US
517-373-7910
517-373-2939
Remote Sensing & GIS Research and Outreach Services, Michigan State University
673 Auditorium Road, 2nd Floor Geography - Michigan State University
East Lansing
MI
48824
US
517-355-7195
517-353-1821
vector digital data
State of Michigan (SOM) Center for Shared Solutions
111 S. Capitol Avenue, Romeney Building - 10th Floor
Lansing
MI
48933
US
517-373-7910
517-373-2939
State of Michigan (SOM) Center for Shared Solutions
State of Michigan (SOM) Center for Shared Solutions
Genesee_2015_2ft_LiDAR_Contours
Ken Koleda
Genesee County
GIS Director
1101 Beach St.
Flint
MI
48502
kkoleda@co.genesee.mi.us
US
810-257-3163
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Dataset Description: This dataset contains 2-foot elevation contours presented as feature classes in an Esri ArcGIS 10.3 File Geodatabase. The contours were derived from Bare-Earth digital elevation models (DEMs) created from QL2 LiDAR data acquired as part of the State of Michigan MiSAIL program. </SPAN></P><P><SPAN>Source Data Description: MI 2015-2017 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. For more information, see specific metadata information for LiDAR deliverables.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Data created for use in planning, design, assessment, research, general mapping and hydrologic modeling. Smoothing process run to make this layer smaller, more efficient and cartographically smoother in appearance.
Michigan
EPA GIS Keyword Thesaurus
Land
ISO 19115 Topic Category
elevation
ForMarParks
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 Remote Sensing & GIS 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
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>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 Remote Sensing & GIS 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. </SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Bare-earth ground condition for Genesee County Michigan.
2015-11-14T00:00:00
2015-11-16T00:00:00
Contour data created by Remote Sensing & GIS Research and Outreach Services, Michigan State University. http://www.rsgis.msu.edu/. LiDAR and derived DEM source data created by vendors under contract to the State of Michigan.
November 2015
Contours
Bare Earth
2
1
-83.941512
-83.441257
43.227920
42.772287
Genesee County, Michigan
Esri ArcGIS 13.6.0.59527
Genesee County
Ken Koleda
Genesee County
GIS Director
1101 Beach St.
Flint
MI
48502
kkoleda@co.genesee.mi.us
US
810-257-3163
Ken Koleda
<DIV STYLE="text-align:Left;"><DIV><DIV><DIV STYLE="font-size:12pt"><P><SPAN>None</SPAN></P><P><SPAN /></P></DIV></DIV></DIV></DIV>
Topologic Validation of contours to identify overlap errors
Comparison of elevation contours with one another.
Complete
Identification that all intervals are 2 feet.
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.
Elevations of contour locations generally matched elevations of original data. Contours were smoothed so elevation values do not correspond exactly.
1
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.
> 99% of all values from DEMs generated from Smoothed Contours were within 2 feet of original Lidar-derived DEMs. Furthermore, approximately 94% of values were within 1 foot of original Lidar-derived DEMs.
1
2015-2017 MiSAIL LiDAR Bare-Earth Digital Elevation Model data
2015-03-01T00:00:00
2015-03-01T00:00:00
1.0
Sanborn Map Company
1935 Jamboree Dr
Colorado Springs
CO
80920
US
719-264-5490
raster digital data
State of Michigan (SOM) Center for Shared Solutions
111 S. Capitol Avenue, Romeney Building - 10th Floor
Lansing
MI
48933
US
517-373-7910
517-373-2939
State of Michigan (SOM) Center for Shared Solutions
State of Michigan Counties
2015-03-01T00:00:00
2015-11-30T00:00:00
1
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.
LiDAR data collected and processed by vendor. 2-foot contours generated by Remote Sensing & GIS from bare-earth DEMs derived from LiDAR data.
2-foot contours and 10-foot contours were generated for each LiDAR tile. Depression contours at a 2-foot interval were created as well for the purpose of attribution. All contours less than 100 feet in length were deleted. Remaining 2-foot contours were then attributed as either intermediate, intermediate_depression, index or index_depression through spatial selection and calculation. Newly attributed 2-foot contours were then smoothed by tile using cartographic generalization tools in Esri ArcGIS 10.3. Final smoothed contours were visually checked for overlap errors. Topology was built for all tiles and errors were repaired where found. Errors included overlapping contours from the smoothing process and gaps between contour tiles. 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 2-foot contour dataset. In addition, the county-wide 2-foot contour dataset was clipped by survey township (TwnRng) with a 100-meter buffer.
Robert Goodwin
RS&GIS, MSU
Sr. Geospatial Analyst
(517) 432-0879
673 Auditorium Road
213 Geography, MSU
East Lansing
MI
48824
goodwinr@msu.edu
http://www.rsgis.msu.edu/
2016-09-01T00:00:00
EPSG
6.3(9.0.0)
2015ContoursForMar
Feature Class
0
FID
FID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
Shape
Geometry
0
0
0
Elevation
Elevation
Integer
10
10
0
Linetype
Linetype
String
25
0
0
These data contain 2-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.
dataset
0
Simple
FALSE
0
FALSE
FALSE
20251230
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