State of Michigan (SOM) 2017 1.0 raster digital data Michigan State of Michigan http://www.michigan.gov This metadata record describes the 2D Intensity Images (.tif) containing 2 ft pixels with intensity values from 0 to 255 derived from the 2017 Michigan LiDAR project covering approximately 563 square miles, in which its extents cover Ogemaw County. To acquire detailed surface 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. 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. 20161111 20161114 ground condition Complete Unknown -84.367851 -83.882107 44.504985 44.157181 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 MI Michigan Ogemaw, Iosco, Gladwin, Arenac, Isabella, Midland United States 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be aware that temporal changes may have occurred since this dataset was collected and some parts of this dataset may no longer represent actual surface conditions.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 unknown Unclassified unknown Microsoft Windows 7; ESRI ArcCatalog 9.3.1.1850 N/A LiDAR data is collected within the project area, processed, and classified according to project specifications. LiDAR data is collected for the project area. Post processing of the simultaneously acquired GPS/INS is performed and applied to the laser returns to output a point cloud in the specified project coordinate system and datums. The point cloud data is then subjected to automated classification routines to assign all points in the point cloud to ground, water, overlap and unclassified point classes. Anomalous laser returns that occur infrequently are removed entirely from the data set. N/A 0 N/A N/A 0 N/A Sanborn Map Company Inc. Unpublished Material 1.0 Point digital data 1200 Disk 2017 ground condition LAS The post processed lidar data has been projected and oriented in the specified coordinate system as an un-classified point cloud. 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 LEICA CloudPro 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 post processed GPS/INS solution is applied to the raw lidar data to orient and project the data points into the project area reference system as an unclassified point cloud. LIDAR, GPS_SOL 2017 LAS 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 ground class of the processed lidar data is then compared to the ground control and elevation differences between the lidar surface and surveyed elevation are recorded in tabular form. Vertical accuracy statistics are then developed to produce vertical RMSE and overall accuracy estimates and reports. CONT, LIDAR 2017 None After vertical accuracy evaluation the classified lidar data is exported as 2500 X 2500 foot tiles in the LAS format with any or all classes required to produce derivative products. LAS, TLDEF 2017 LAS Intensity Images generated using intensity values from all return lidar TIFF 2017 Intensity Point State Plane Coordinate System 1983 2112 45.7 44.1833333333333 -84.3666666666666 43.3166666666667 19685039.37 0 coordinate pair 0.01 0.01 international feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222101 North American Vertical Datum of 1988(GEOID12B) 0.1 feet Explicit elevation coordinate included with horizontal coordinates Classes: 1 - Unclassified (Processed) 2 - Bare-Earth Ground 7 - Noise 9 - Water 10 - Ignored Ground 17 - Bridges 18 - High Noise USGS Base Specification 1.2, QL2 meeting 19.6 cm FVA 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. TIFF 1.2 2000 http://www.michigan.gov unknown 5 - 1/2 inch hard drive TIF 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