gov.noaa.csc.maps:2009_OR_DOGAMI_Willamette_m1078 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Oregon Department of Geology and Mineral Industries (DOGAMI) 201202 Charleston, SC NOAA's Ocean Service (NOS), Coastal Services Center (CSC) http://www.csc.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1078 http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov The Oregon Department of Geology & Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the state of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected in 17 delivery areas from August 31, 2008 through July 1, 2009. See below for the specific date of collection and total area covered for each delivery. This data set covers 3157 square miles (2,020,760 square acres) and falls in portions of the following counties in northwestern Oregon: Benton, Clackamas, Clatsop, Columbia, Lane, Linn, Polk, Marion, Washington, and Yamhill. This data set consists of bare earth and unclassified points. The average pulse density is 8.14 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. This LiDAR data set was collected on different dates and organized into 17 deliveries. To determine which delivery or deliveries are in your area of interest, download the Delivery Area graphic at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/willamette_valley/2009_dogami_oregon_lidar_willamette_valley.pdf The specific date of collection and total area covered for each delivery are listed below. Delivery 1: Acquisition Date: 20081022-20081024 Total Area = 32,150 sq acres Delivery 2: Acquisition Date: 20080831-20090222 Total Area = 67,377 sq acres Delivery 3: Acquisition Date: 20080831-20080914 Total Area = 89,974 sq acres Delivery 4: Acquisition Date: 20080831-20090222 Total Area = 136,997 sq acres Delivery 5: Acquisition Date: 20080831-20080914 Total Area = 136,424 sq acres Delivery 6: Acquisition Date: 20080831-20080921 Total Area = 157,904 sq acres Delivery 7: Acquisition Date: 20080831-20080921 Total Area = 65,249 sq acres Delivery 8: Acquisition Date: 20080831-20090405 Total Area = 155,491 sq acres Delivery 9: Acquisition Date: 20080914-20090315 Total Area = 147,742 sq acres Delivery 10: Acquisition Date: 20081005-20090315 Total Area = 125,480 sq acres Delivery 11: Acquisition Date: 20081005-20081111 Total Area = 89,804 sq acres Delivery 12: Acquisition Date: 20080928-20090315 Total Area = 89,161 sq acres Delivery 13: Acquisition Date: 20080917-20090701 Total Area = 177,375 sq acres Delivery 14: Acquisition Date: 20090518-20090616 Total Area = 96,010 sq acres Delivery 15: Acquisition Date: 20081010-20090607 Total Area = 191,635 sq acres Delivery 16: Acquisition Date: 20080907-20090627 Total Area = 151,037 sq acres Delivery 17: Acquisition Date: 20081019-20090609 Total Area = 110,950 sq acres Provide high resolution terrain elevation and land cover elevation data. A final report for this project may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/willamette_valley/WV_Data_Report_Delivery_Area_15_16_17_FINAL.pdf A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/willamette_valley/2009_Oregon_DOGAMI_Willamette_Valley_Lidar.kmz 20080831 20090701 ground condition Complete None planned -123.500000 -121.960531 45.825000 43.921676 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 Pacific Northwest Oregon Benton County Clackamas County Clatsop County Columbia County Lane County Linn County Polk County Marion County Washington County Yamhill County 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

800 NE Oregon St. #28, Ste. 965

Portland OR 97232 US 971-673-1542 ian.madin@dogami.state.or.us ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/or/willamette_valley/2009_Oregon_DOGAMI_Willamette_Valley_Lidar.kmz This graphic shows the lidar coverage for the Willamette Valley project area. kmz DOGAMI Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.0.1324 Upon receipt from vendor (Watershed Sciences), 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. Project specifications required the LiDAR foot print to fall within 0.15 and 0.40 meters. Absolute accuracy compares known Real Time Kinematic (RTK) ground survey points to the closest laser point. For the Willamette Valley Phase I Study Area, 38,371 RTK points were collected for data delivered. The final vertical accuracy value for the entire project is 0.13 ft (0.04 m) RMSE. The LiDAR data was collected between August 31, 2008 and July 1, 2009. The survey used a Leica ALS50 Phase II laser system mounted in a Cessna Caravan 208B. The system was set to acquire greater than or equal to 105,000 laser pulses per second (i.e. 105 kHz pulse rate)and flown at 900 meters above ground level (AGL), capturing a scan angle of plus or minus 14 degrees from nadir. These settings were developed to yield points with an average native density of > or = 8 points per square meter over terrestrial surfaces. The native pulse density is the number of pulses emitted by the LiDAR system. Some types of surfaces (i.e. dense vegetation or water) may return fewer pulses than the laser originally emitted. Therefore, the delivered density can be less than the native density and lightly variable according to distributions of terrain, land cover, and water bodies. The completed areas were surveyed with opposing flight line side-lap of greater than or equal to 50 percent (greater than or equal to 100 percent overlap) to reduce laser shadowing and increase surface laser painting. The system allows up to four range measurements per pulse, and all discernible laser returns were processed for the output dataset. During the LiDAR survey of the study area, a static (1 Hz recording frequency) ground survey was conducted over monuments with known coordinates. After the airborne survey, the static GPS data are processed using triangulation with CORS stations checked against the Online Positioning User Service (OPUS) to quantify daily variance. Multiple sessions are processed over the same monument to confirm the antenna height measurements and reported position accuracy. Multiple DGPS units are used for the ground real-time kinematic (RTK) portion of the survey. To collect accurate ground surveyed points, a GPS base unit is set up over monuments to broadcast a kinematic correction to a roving GPS unit. The ground crew uses a roving unit to receive radio-relayed kinematic corrected positions from the base unit. This method is referred to as real-time kinematic (RTK) surveying and allows precise location measurement (sigma less than or equal to 1.5 cm (0.6 in)). 2009 Watershed Sciences, Inc. mailing and physical

215 SE 9th Ave., Suite 106

Portland OR 97214 US 971-223-5152 watershedsciences.com 1. Laser point coordinates are computed using the IPAS and ALS Post Processor software suites based on independent data from the LiDAR system (pulse time, scan angle), and aircraft trajectory data (SBET). Laser point returns (first through fourth) are assigned an associated (x, y, z) coordinate along with unique intensity values (0 to 255). The data are output into large LAS v. 1.1 files; each point maintains the corresponding scan angle, return number (echo), intensity, and x, y, z (easting, northing, and elevation) information. 2. These initial laser point files are too large to process. To facilitate laser point processing, bins (polygons) are created to divide the dataset into manageable sizes (less than 500 MB). Flightlines and LiDAR data are then reviewed to ensure complete coverage of the study area and positional accuracy of the laser points. 3. Once the laser point data are imported into bins in TerraScan, a manual calibration is performed to assess the system offsets for pitch, roll, heading, and mirror scale. Using a geometric relationship developed by Watershed Sciences, each of these offsets is resolved and corrected if necessary. 4. The LiDAR points are then filtered for noise, pits, and birds by screening for absolute elevation limits, isolated points, and height above ground. Each bin is then inspected for pits and birds manually; spurious points are removed. For a bin containing approximately 7.5 to 9.0 million points, an average of 50 to 100 points are typically found to be artificially low or high. These spurious non-terrestrial laser points must be removed from the dataset. Common sources of non-terrestrial returns are clouds, birds, vapor, and haze. 5. The internal calibration is refined using TerraMatch. Points from overlapping lines are tested for internal consistency and final adjustments are made for system misalignments (i.e., pitch, roll, heading offsets and mirror scale). Automated sensor attitude and scale corrections yield 3 to 5 cm improvements in the relative accuracy. Once the system misalignments are corrected, vertical GPS drift is then resolved and removed per flight line, yielding a slight improvement (less than 1 cm) in relative accuracy. At this point in the workflow, data have passed a robust calibration designed to reduce inconsistencies from multiple sources (i.e. sensor attitude offsets, mirror scale, GPS drift) using a procedure that is comprehensive (i.e. uses all of the overlapping survey data). Relative accuracy screening is complete. 6. The TerraScan software suite is designed specifically for classifying near-ground points (Soininen, 2004). The processing sequence begins by ‘removing’ all points that are not ‘near’ the earth based on geometric constraints used to evaluate multi-return points. The resulting bare earth (ground) model is visually inspected and additional ground point modeling is performed in site-specific areas (over a 50 meter radius) to improve ground detail. This is only done in areas with known ground modeling deficiencies, such as: bedrock outcrops, cliffs, deeply incised stream banks, and dense vegetation. In some cases, ground point classification includes known vegetation (i.e., understory, low/dense shrubs, etc.) and these points are manually reclassified as non-grounds. 2009 Watershed Sciences, Inc. mailing and physical

215 SE 9th Ave., Suite 106

Portland OR 97214 US 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 were in Oregon Lambert (NAD83), International Feet coordinates and NAVD88 (Geoid 03) vertical datum. CSC performed the following processing to the data to make it available within the Digital Coast: 1. The data were converted from Oregon Lambert (NAD83), International Feet coordinates to geographic coordinates. 2. The data were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using Geoid 03. 3. The vertical units of the data were converted from International feet to meters. 4. The data were sorted by latitude and the headers were updated. 2011 NOAA Coastal Services Center mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 US 843-740-1200 csc.info@noaa.gov For questions please use the form at http://www.csc.noaa.gov/contact/contactForm.htm The NOAA National Geophysical Data Center (NGDC) received Lidar data files by ftp. The data received compressed containing 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 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. 20120229 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 NOAA Coastal Services Center mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 US 843-740-1200 csc.info@noaa.gov For questions please use the form at http://www.csc.noaa.gov/contact/contactForm.htm 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 Coastal Services Center or its partners. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1078 This data set is dynamically generated based on user-defined parameters. 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. 20120229 20120229 20130229 NOAA Coastal Services Center mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 US 843-740-1200 csc.info@noaa.gov For questions please use the form at http://www.csc.noaa.gov/contact/contactForm.htm FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998