Oregon Department of Geology and Mineral Industries (DOGAMI) Oregon Lidar Consortium (OLC) Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) 20171015 Charleston, SC NOAA's Ocean Service (NOS), Office for Coastal Management (OCM) https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8383 https://coast.noaa.gov/htdata/raster2/elevation/OLC_west_metro_2012_8383 https://coast.noaa.gov/dataviewer https://coast.noaa.gov WSI has collected Light Detection and Ranging (LiDAR) data of the Oregon West Metro Study Area for the Oregon Department of Geology and Mineral Industries (DOGAMI). The Oregon LiDAR Consortium's West Metro project area encompasses approximately 100,000 acres in Washington, Multnomah, and Clackamas County, Oregon. The study area includes the Beaverton, Hillsboro, and Forest Grove metro areas. Data were delivered in: Oregon State Plane North; horizontal and vertical datum: NAD83 (2011)/NAVD88 (Geoid12a); units: International Feet. Between December 28th, 2012 and January 4th, 2013, WSI employed remote-sensing lasers in order to obtain a total area flown of 99,684 acres of which 96,543 acres comprise the area of interest. Settings for LiDAR data capture produced an average resolution of at least eight pulses per square meter. In addition to LiDAR survey, OLC West Metro included high resolution aerial photography was acquired for the entire study area. This metadata was created for the bare earth digital elevation models. Provide high resolution terrain elevation data. A final report for this project may be viewed at: https://coast.noaa.gov/htdata/lidar2_z/geoid12b/data/8382/supplemental/OLC_WEST_METRO_DELIVERY_REPORTcompressed.pdf The delivery acceptance report may be viewed at: https://coast.noaa.gov/htdata/lidar2_z/geoid12b/data/8382/supplemental/West_Metro_2012_LIDAR_QC_Report.pdf 20121228 20130104 ground condition Complete None planned -123.1996 -123.0503 45.5595 45.4734 ISO 19115 Topic Category elevation None Bathymetry/Topography Lidar Light Detection and Ranging DEM Digital Terrain Model DOGAMI Oregon Lidar Consortium Elevation data Bare earth High-resolution Bare ground None United States Oregon Pacific Northwest Portland None Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. DOGAMI Jacob Edwards mailing and physical

800 NE Oregon St. #28, Ste. 965

Portland OR 97232 USA 971-673-1557 jacob.edwards@oregon.gov https://coast.noaa.gov/htdata/lidar2_z/geoid12b/data/8382/supplemental/2012_west_metro_area.kmz A polygon footprint of this data set. kmz DOGAMI Upon receipt from vendor (WSI), all LiDAR data was independently reviewed by staff from the Oregon Department of Geology and Mineral Industries (DOGAMI) to ensure project specifications were met. All data were inventoried for completeness and data were checked for quality, which included examining LiDAR data for errors associated with internal data consistency, model quality, and accuracy. Lidar data has been collected and processed for all areas within the project study area. unknown A total of 1,776 measured GCP's were obtained in the Delivery region and compared with the lidar elevation grids. The data delivered to DOGAMI was found to have a mean vertical offset of -0.033 meters (-0.107 feet) and an RMSE value of 0.051 meters (0.166 ft). Offset values ranged from -0.210 to 0.153 meters For more information about the vertical accuracy, please refer to the final report, listed above in the Supplemental_Information field of this metadata record. 0.051 Tested RMSE in meters in open terrain The LiDAR survey utilized Leica ALS60 sensor mounted in a Cessna Caravan 208B. The systems were programmed to emit either single or multi-laser pulses at a rate of 61.1 or 63.3 Hz, and flown at 900 or 1500 meters above ground level (AGL), capturing a scan angle of +/-30 degrees from nadir. These settings are developed to yield points with an average native density of greater than eight points per square meter over terrestrial surfaces. 2012 WSI mailing and physical

421 SW 6th Avenue, Suite 800

Portland OR 97204 (503) 505-5100 The NOAA Office for Coastal Management (OCM) received the files in the proprietary ESRI grid format. The files were converted to floating point GeoTIFF format in vertical meters using gdal_translate from GDAL version 2.1.1. 201705 NOAA Office for Coastal Management mailing and physical

2234 South Hobson Avenue

Charleston SC 29405-2413 843-740-1202 coastal.info@noaa.gov Raster Grid Cell Oregon State Plane North International Feet 44.333333333333 46 -120.5 43.666666666667 8202099.738 0.0 coordinate pair 3 3 foot North American Datum of 1983 (2011) Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 (NAVD88; Geoid12a) 0.001 Meters Explicit elevation coordinate included with horizontal coordinates NOAA Office for Coastal Management mailing and physical

2234 South Hobson Avenue

Charleston SC 29405-2413 843-740-1202 coastal.info@noaa.gov Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of the Oregon Department of Geology and Mineral Industries (DOGAMI), the Office for Coastal Management or its partners. This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer 20171019 NOAA Office for Coastal Management mailing and physical

2234 South Hobson Avenue

Charleston SC 29405-2413 843-740-1202 coastal.info@noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998