State of Michigan (SOM)
2017
South Michigan - Wayne County - Michigan 2017
1.0
vector digital data
Michigan
State of Michigan
http://www.michigan.gov
This metadata record describes the vector data used for the 2017 Michigan LiDAR project covering approximately 612 square miles, in which its extents cover Wayne County.
To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments, and hydrologic modeling. LAS and bare earth DEM data products are suitable for 1 foot contour generation. USGS LiDAR Base Specification 1.2, QL2. 19.6 cm NVA.
Project Projection, Datums and Units. Projection - State Plane Michigan South. Horizontal datum - North American Datum of 1983 (NAD83 (2011)). Vertical datum - North American Vertical Datum of 1988 (NAVD88) using the latest geoid (Geoid12B) for converting ellipsoidal heights to orthometric heights. Units - intl feet
20170412
20170423
ground condition
Unknown
-83.548260
-82.865575
42.446960
42.081666
MI
LiDAR
mapping
point cloud
Ground points
Unclassified points
Water points
Overlap points
ALS70
Intensity return
LAS
Digital Elevation Model (DEM)
Digital Terrain Model (DTM)
Digital Surface Model (DSM)
IMG
Grid
Bare Earth
First Return
Contour
hydro-flattening
MI
Michigan
Tuscola, Huron, Sanilac, St. Clair, Macomb, Oakland, Jackson, Washtenaw, Wayne, Hillsdale, Lenawee, Monroe
none
2017
This data may be used by the requested party for stated purposes and should not be re-distributed.
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 Sanborn Map Company. 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be aware that temporal changes may have occurred since this dataset was collected and some parts of this dataset may no longer represent actual surface conditions.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.
Contact:
State of Michigan
Everett Root
State of Michigan
Manager, Geodata Services Section
mailing and physical address
111 S. Capitol Ave
Lansing
MI
48933
U.S.A.
517-335-7180
roote@michigan.gov
8:00 AM - 5:00 PM
Microsoft Windows 7; ESRI ArcCatalog 9.3.1.1850
N/A
0
N/A
Data covers the boundary extents provided for the project.
A visual qualitative assessment was performed in the source Lidar dataset.
N/A
0
N/A
N/A
0
N/A
State of Michigan
Unpublished material
Tile Definition
1.0
Vector digital data
1200
disk
2017
ground condition
TLDEF
The tile definition defines discreet non-overlapping rectangular areas used as cut lines to break up the large classified lidar dataset into smaller, more manageable data tiles. Each tile is 2500 X 2500 feet in dimension.
USGS
2014
National Hydrography Dataset
Unknown
Vector digital data
1200
disk
2017
Ground condition
NHD
The National Hydrography Dataset (NHD) is the surface water component of The National Map. The NHD is a digital vector dataset used by geographic information systems (GIS). It contains features such as lakes, ponds, streams, rivers, canals, dams and stream gages. These data are designed to be used in general mapping and in the analysis of surface-water systems. (ref. http://nhd.usgs.gov/) As such, the NHD acts as a guide and reference when compiling up to date hydrologic features from aerial lidar data.
Sanborn Map Company, Inc.
Unpublished Material
Terrain Geodatabase
1.0
ESRI geodatabase
1200
disk
2017
ground condition
GDB
Terrain geodatabase comprised of lidar bare earth DEM and hydrologic breaklines used to derive a hydro-flattened DEM.
At selected locations throughout the site, accurate GPS coordinates and elevations are surveyed and the points are marked with targets.
None
2017
CONT
New LiDAR data is captured for the project area using a Leica ALS70 LiDAR instrument an integrated IPAS20 GPS/INS system mounted within a Aero Commander twin engine airplane.
None
2017
LIDAR, GPS_RAW
The airborne GPS data is post-processed in Inertial Explorer software and LEICACloudPro software to determine the LiDAR sensor's angle and orientation in the terrain (project) coordinate system and datums during the survey.
GPS_RAW
2017
GPS_SOL
The georeferenced lidar data is then classified and edited in Terrasolid Terrascan software. Data is classified to produce: Class 1: unclassified, Class 2: ground, Class 7: low point, Class 9: water, Class 10: ignored ground, Class 11: withheld.
CONT, GPS_SOL, LIDAR
2017
LAS
The hydro features are used to classify the LiDAR and hydro-flatten the bare earth DEMs
GDB,HYDRO
2017
IMG,LAS
Vector
State Plane Coordinate System 1983
2113
42.1
43.6666666666667
84.3666666666667
41.5
13123359.5800525
0
coordinate pair
0.01
0.01
international feet
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222101004
North American Vertical Datum of 1988(GEOID12B)
0.1
feet
Explicit elevation coordinate included with horizontal coordinates
Waterbodies
Islands
Banklines (Rivers)
USGS Base Specification 1.2, QL2 meeting 19.6 cm NVA
Everett Root
State of Michigan
Manager, Geodata Services Section
mailing and physical address
111 S. Capitol Ave
Lansing
MI
48933
U.S.A.
517-335-7180
roote@michigan.gov
8:00 AM - 5:00 PM
Michigan 2017 LiDAR project
The State of Michigan Geographic Information Systems digital data have been tested and their documentation carefully reviewed. However, the State of Michigan and its representatives make no warranty or representation, either expressed or implied, with respect to the digital data and their documentation, their quality, performance, merchantability, or fitness for a particular purpose. The digital data are distributed on "as is" basis, and the user assumes all risk to their quality, the results obtained from their use, and the performance of the data. In no event will the State of Michigan or its representatives be liable for any direct, indirect, special, incidental or consequential damages resulting from and defect in the State of Michigan or in their documentation. This disclaimer of warranty is exclusive and in lieu of all others, oral or written, express or implied. No agent or employee is authorized to make any modification, extension, or addition to this warranty.
Geodatabase
http://www.michigan.gov
unknown
unknown
State of Michigan
unknown
2017
2017
Shawn Benham
Sanborn Map Co
Project Manager
mailing address
1935 Jamboree Dr
Colorado Springs
CO
80920
U.S.A.
719.502-1296
sbenham@sanborn.com
8:00 AM - 5:00 PM
FGDC CSDGM
FGDC-STD-001-1998