gov.noaa.csc.maps:2007_OR_DOGAMI_m82 Watershed Sciences, Inc. Oregon Department of Geology and Mineral Industries (DoGAMI) 2007 Charleston, SC NOAA's Ocean Service (NOS), Coastal Services Center (CSC) http://www.csc.noaa.gov/lidar Watershed Sciences, Inc. collected Light Detection and Ranging (LiDAR) data for the Oregon Department of Geology and Mineral Industries (DoGAMI) and the Oregon Department of Forestry (ODF) between March 15 and November 7 2007. This data set has bare earth and unclassified points. The dataset encompasses portions of the following counties in northwest Oregon: Multnomah, Marion, Hood River, Clackamas, Columbia, Washington and Yamhill. Areas of interest within this data set are the Portland Metro area, Mt. Hood and Silver Falls State Park. There is approximately 8 points per square meter over terrestrial surfaces. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. Lidar intensity values were also collected. Provide high resolution terrain elevation and land cover elevation data. For more information, please refer to the survey reports for this data at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/dogami There are seven survey reports that cover this data set. Each one refers to a specific area within the total survey area. LiDAR_Data_Report_DoGAMI_ODF_Deliv10_and_11.pdf refers to the entire data set. 20070315 20071107 Ground condition Complete None planned -123.165316 -121.611916 45.904818 44.943718 ISO 19115 Topic Category Elevation None Bathymetry/Topography LiDAR Light Detection and Ranging DEM Digital Terrain Model DoGAMI Elevation data Bare earth High-resolution Bare ground DTM None United States Oregon Pacific Northwest Portland Metro Area Marion County Clackamas County Multnomah County Hood River County Columbia County Washington County Yamhill County Mt. Hood Silver Falls State Park Silver Falls Williamette Valley 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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 Ian Madin Mailing and physical address

800 NE Oregon St. #28, Ste. 965

Portland OR 97232 USA 971-673-1542 ian.madin@dogami.state.or.us DoGAMI Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.0.1324 LiDAR flight lines have been examined to ensure that there was at least 75% sidelap, there are no gaps between flightlines, and overlapping flightlines have consistent elevation values. Shaded relief images have been visually inspected for data errors such as pits, border artifacts, gaps, and shifting. The data was examined at a 1:3500 scale. LiDAR data has been collected and processed for all areas within the project study area. 1/3000th Above Ground Level (AGL). For more information, please refer to the survey reports for this data at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/dogami There are seven survey reports that cover this data set. Each one refers to a specific area within the total survey area. LiDAR_Data_Report_DoGAMI_ODF_Deliv10_and_11.pdf refers to the entire data set. The Root Mean Square Error (RMSE) for this data set is 0.11 feet (3.35 cm) and 0.12 feet (3.65 cm). Because this data set was collected in different deliveries, some areas of the data have an RMSE of 0.11 feet (3.35 cm) and others are 0.12 feet (3.65 cm). Accuracy was assessed using 10632 ground survey (real time kinematic) points. These ground survey points are distributed throughout the entire DoGAMI study area. For more information, please refer to the survey reports for this data at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/dogami There are seven survey reports that cover this data set. Each one refers to a specific area within the total survey area. LiDAR_Data_Report_DoGAMI_ODF_Deliv10_and_11.pdf refers to the entire data set. Acquisition. The LiDAR data was collected between March 15 and November 11, 2007. The survey used a Leica ALS50 Pase II laser system mounted in a Cessna Caravan 208, and an Optech 3100 laser system mounted in a Cessna Caravan 208. Near nadir scan angles were used to increase penetration of vegetation to ground surfaces. Ground level GPS and aircraft IMU were collected during the flight. 2007 Watershed Sciences, Inc. Mailing and physical address

215 SE 9th Ave., Suite 106

Portland OR 97214 971-223-5152 watershedsciences.com Processing. 1. Flight lines and data were reviewed to ensure complete coverage of the study area and positional accuracy of the laser points. 2. Laser point return coordinates were computed using ALS Post Processor software, IPAS Pro GPS/INS software, REALM survey suite, and PosPac software, based on independent data from the LiDAR system, IMU, and aircraft. 3. The raw LiDAR file was assembled into flight lines per return with each point having an associated x, y, and z coordinate. 4. Visual inspection of swath to swath laser point consistencies within the study area were used to perform manual refinements of system alignment. 5. Custom algorithms were designed to evaluate points between adjacent flight lines. Automated system alignment was computed based upon randomly selected swath to swath accuracy measurements that consider elevation, slope, and intensities. Specifically, refinement in the combination of system pitch, roll and yaw offset parameters optimize internal consistency. 6. Noise (e.g., pits and birds) was filtered using ALS postprocessing software and REALM software tools, based on known elevation ranges and included the removal of any cycle slips. 7. Using TerraScan and Microstation, ground classifications utilized custom settings appropriate to the study area. 8. The corrected and filtered return points were compared to the RTK ground survey points collected to verify the vertical and horizontal accuracies. 9. Points were output as laser points, TINed and GRIDed surfaces. 2008 Watershed Sciences, Inc. Mailing and physical address

215 SE 9th Ave., Suite 106

Portland OR 97214 971-223-5152 watershedsciences.com The NOAA Coastal Services Center (CSC) received the files in las format. The files contained Lidar elevation and intensity measurements. The data was in Lambert Conformal Conic and Oregon State Plane projections, and NAVD88 Geoid 03 vertical datum. CSC performed the following processing to the data to make it available within the LDART Retrieval Tool (LDART): 1. The data were converted from Lambert Conformal Conic and Oregon State Plane coordinates to geographic coordinates. 2. The data were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using Geoid 03. 3. The LAS data were sorted by latitude and the headers were updated. 20080717 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov The NOAA National Geophysical Data Center (NGDC) received Lidar data files on external harddrive. The disk contains LiDAR data from the NOAA Coastal Services Center. The data are currently being served via Digital Coastl at http://www.csc.noaa.gov/digitalcoast/. The data can be used to re-populate the system. The data are provided on this disk in LAS format. LAS format is an industry standard for serving LiDAR data. The data are exclusively in geographic coordinates, however, the datums used vary. Most are NAD 83, however some are in ITRF. Vertical systems include both ellipsoid (ITRF and NAD 83) and NAVD 88. For NAVD 88 values, Geiod 03 is primarily used; however, data received in NAVD 88 prior to 2003 was processed using Geoid 99. 20110919 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Pamela Grothe Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6120 (303) 497-6958 (303) 497-6513 pamela.grothe@noaa.gov 7:30-5:00 Mountain Contact Data Center Point 0.0000001 0.0000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Ellipsoid 0.001 Meters Explicit elevation coordinate included with horizontal coordinates Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.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 Oregon Department of Forestry (ODF), the Coastal Services Center or its partners. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/lidar DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Pamela Grothe Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6120 (303) 497-6958 (303) 497-6513 pamela.grothe@noaa.gov 7:30-5:00 Mountain Contact Data Center Disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. The National Geophysical Data Center serves as the archive for this LIDAR data. NGDC should only be contacted for this data if it cannot be obtained from NOAA Coastal Services Center. 20111119 20111119 20121119 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998