20071001 15432600 FALSE 20071001 15432600 20071001 15432600 {ACC96FA9-3CA4-4BD0-8295-0ACB5C224D6F} Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350 en The 2007 OSIP bare-earth Digital Elevation Model (DEM) was derived from digital LiDAR data was collected during the months of March and May (leaf-off conditions). The DEM data covers the entire land area of the northern tier of Ohio (approximately 17,832 square miles. The DEM is delivered in county sets, consisting of 5,000' x 5,000' size tiles that correspond to the tile sizes for the OSIP 1FT imagery products. Where the State borders other states (land only), the entire border of the State is buffered by at least 1,000-feet. Along the Lake Erie Shoreline ortho coverage is buffered beyond the shoreline a minimum distance of 2,500-feet. The file naming convention is as follows: Nxxxxyyy = 5,000' x 5,000' Tiles located in the Ohio State Plane Coordinate System (North Zone). Sxxxxyyy = 5,000' x 5,000' Tiles located in the Ohio State Plane Coordinate System (South Zone). Please note that xxxx and yyy represent the easting and northing coordinates (respectively) in state plane feet, The naming convention for each tile is based upon (the bottom most-left pixel). The DEM was provided in ESRI ArcINFO GRID raster and ASCII grid formats, with only the LiDAR in LAS Format containing the above ground LiDAR features. Ownership of the data products resides with the State of Ohio. Orthophotography and ancillary data products produced through this contract are public domain data. The LiDAR used to generate the DEM was acquired Statewide to provide a solid and very accurate base to use during the image rectification process. This same LiDAR can be supplemented with 3D breaklines to generate 2-foot and/or 4/5-foot contours. The average post spacing between LiDAR points is 7-feet. The flying altitude was 7,300-feet AMT, with the targeted flying speed at 170 knots. The State of Ohio has a goal to develop and maintain a seamless statewide base map, referred to as OSIP (Ohio Statewide Imagery Program). OSIP is an initiative partnered through several State Agencies (i.e. ODOT, ODNR) through OGRIP. Data from this project forms the foundation of the Statewide base map, and was developed primarily to support multi-use applications, including homeland security, emergency management, economic development, and the business of government. The delivery of the DEM and LiDAR products will be based upon the 5,000' x 5,000' ortho tile layout, with the same naming convention used for both the imagery, DEM, and LiDAR. Each DEM tile was delivered in ESRI ArcINFO GRID raster and ASCII grid formats. State of Ohio Office of Information Technology, Ohio Geographically Referenced Information Program 20070101 S1720745 raster digital data S1720745 Digital Elevation Model 20070416 Complete Unknown -83.387717 -83.369684 40.055929 40.042071 524257.048533 525781.051581 227076.454168 228600.457216 None DEM imageryBaseMapsEarthCover statewide imagery georeferenced image Georectification OSIP orthophotography aerial photograph rectified image digital orthophoto LiDAR digital elevation model US Ohio None None Raster Dataset This data set was acquired for the State of Ohio by Woolpert Inc. Subcontractors for LiDAR data acquisition included Horizons, Inc. Project Administrator mailing and physical address
77 South High Street - Room 1990
Columbus Ohio 43215 USA 614.466.4747 614.728.5297 gis.support@oit.ohio.gov 8:00 am - 5:00 pm State of Ohio, through the Office of Information Technology, Investment and Governance Division, for the Office of Information Technology, Services Delivery Division and the Ohio Geographically Referenced Information Program (OGRIP) Jeff Smith State of Ohio Office of Information Technology, Ohio Geographically Referenced Information Program Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350 S1720745 524257.048533 525781.051581 228600.457216 227076.454168 1 -83.387717 -83.369684 40.055929 40.042071 1 en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time mailing and physical address Dayton Ohio 45430
4454 Idea Center Blvd.
USA 937.531.1323 Brian Stevens Woolpert Inc. Project Manager 937.461.0743 brian.stevens@woolpert.com 20071001 These metadata were produced prior to full state delivery and assume acceptance during QA/QC. All project sets are to be delivered under contract by February 2008. Completion status is contingent upon passing QA/QC checks and acceptance of all products by the State of Ohio. Delivery to counties occurs after acceptance. If you are accessing this metadata prior to full project acceptance and delivery, users can view project status at http://ohioortho.woolpert.com/ http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset Downloadable Data External Hard Drives 15.299 15.299 Jeff Smith OGRIP Manager mailing and physical address
77 S. High St. - Rm 1990
Columbus Ohio 43215 USA 614.466.4747 614.728.5297 gis.support@oit.ohio.gov 20070301 Raster Grid Cell 2000 2000 1 2.500000 2.500000 32 Upper Left FALSE Default 1 matrix values TRUE row and column 2.500000 2.500000 survey feet Lambert Conformal Conic 40.433333 41.700000 -82.500000 39.666667 1968500.000000 0.000000 GCS_South_American_1983_HARN NAD_1983_HARN_StatePlane_Ohio_South_FIPS_3402_Feet D_North_American_1983_HARN Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 feet 20071001 NAD_1983_HARN_StatePlane_Ohio_South_FIPS_3402_Feet Compliance with the accuracy standard was validated by the collection of photo identifiable GPS ground control points during the acquisition of LiDAR. The following checks were performed. - The LiDAR DEM data was checked against the project ground control. The technical staff confirmed the accuracy of the points during initial processing. Airborne GPS was also utilized during processing. The following methods are used to assure LiDAR accuracy. - Use of IMU and ground control network utilizing GPS techniques. - Use of airborne GPS in conjunction with the imagery and LiDAR acquisition. - The following software is used for validation of the surface modeling - LiDAR DEM Data - Terrascan, TerraModeler, Leica - MicroStation - ESRI - ArcInfo - ERDAS Imagine - Woolpert Proprietary software The DEM, meeting NMAS. The DEM was acquired to meet +/- 1-foot vertical accuracy (RMSE of 0.5-foot - 95% confidence level). This is suitable for rectification of digital orthophotography and for the creation of 2- and 5-foot contours (with the addition of 3D compiled breaklines). The aerial LiDAR acquisition for the State of Ohio was flown to support the creation of digital orthophotography with a 0.5-foot and 1-foot pixel resolution, as well as 1"=1,000 scale CIR Imagery. LiDAR acquisition was flown at an approximate altitude of 7,300-feet AMT, with approximately 26,000 line miles of acquisition. The LiDAR was collected using the Leica ALS50 digital LiDAR system. Woolpert, with the assistance of Horizons, Inc. acquired all LiDAR DEM Data. Woolpert Inc. 20060626 LiDAR Acquisition 1 1"=100', 1"=200' and 1"=1,000' External Hard Drives DEM Acquisition Metadata imported. 20071001 None DEM ESRI ArcINFO GRID raster and ASCII grid formats 2 1 2000 2.5 Foot_US 1 Foot_US = 0.304801 Meter(s) 2000 2.5 Foot_US 1 Foot_US = 0.304801 Meter(s)