gov.noaa.csc.maps:2010_SFBay_m584 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) 201105 Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?missions=584&aoi=-122.646374,-122.111077,37.753405,38.350295 http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov This Light Detection and Ranging (LiDAR) dataset is a survey of northern San Francisco Bay, California. The project area consists of approximately 437 square miles in portions of seven California counties: Alameda, Contra Costa, Marin, Napa, San Francisco, Solano, and Sonoma. The project design of the LiDAR data acquisition was developed to support a nominal post spacing of 1 meter. Fugro EarthData, Inc. acquired 147 flight lines in nine lifts on February 25, 26, and 28; March 1, 24, and 26; and April 3, 15, and 16, 2010. The data was divided into 1500 by 1500 meter cells that serve as the tiling scheme. LiDAR data collection was performed with a Piper Navajo twin engine aircraft, utilizing a Leica ALS60 MPiA sensor, collecting multiple return x, y, and z as well as intensity data. LiDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform. This data of northern San Francisco Bay, California, is classified according to the ASPRS classification scheme and was collected at sufficient resolution to provide a nominal point spacing of 1 m for collected points. Up to 4 returns were recorded for each pulse in addition to an intensity value. The mission of the Coastal Services Center is to support the environmental, social, and economic well being of the coast by linking people, information, and technology. These LiDAR data are intended for use in coastal management decision making, including applications such as sea level rise. The information in this report is the result of LiDAR surveys performed on the date indicated and the general conditions at the time of flight. Data for Red Rock, within San Francisco Bay, was not flown within the project tidal requirements. This data was collected as part of a cross-tie flight (Lift 5711309005203) on February 26, 2010 and is located within tile C5490_41970. In this area the breaklines were artificially lowered to match the hydro-flattened bay however, the LiDAR LAS data remains unaffected and accurate tide heights can be obtained from the data. A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/ca/san_francisco_bay/2010_Northern_San_Francisco_Bay_Lidar.kmz The LiDAR Quality Assurance (QA) Report may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/ca/san_francisco_bay/SF_QA_Report_3rdDelivery_110420_Final.pdf 20100225 20100226 20100228 20100301 20100324 20100326 20100403 20100415 20100416 Publication Date Complete As needed -122.646374 -122.111077 38.350295 37.753405 ISO 19115 Topic Category elevation None Bathymetry/Topography LiDAR Terrain Model Elevation Surface None US California Northern San Francisco Bay Alameda County Contra Costa County Marin County Napa County San Francisco County Solano County Sonoma 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. Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) CEM Project Scientist mailing and physical

2234 South Hobson Ave.

Charleston South Carolina 29405 USA 843.740.1200 tcm@csc.noaa.gov 9:00am - 5:00pm Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) None Unclassified N/A Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500 The boresight of the LiDAR was processed against the ground control for this project which consisted of 41 LiDAR ground survey points and 1 ABGPS base station at the operation airport. The horizontal datum for the control was the North American Datum of 1983 (NAD83, NSRS2007). The vertical datum was the North American Vertical Datum of 1988 (NAVD88). The vertical datum was realized through the use of the published ellipsoidal heights of the CORS and the GEOID09 model. Airborne GPS (ABGPS) data was collected during the acquisition mission for each flight line. During the data acquisition the Positional Dilution of Precision (PDOP) for the ABGPS was monitored to make sure it did not exceed 3.5. The ground control points were measured by technicians using Terrascan and proprietary software and applied during the boresight adjustment of the project lines. Compliance with the accuracy standard was ensured by the collection of GPS ground control prior to and during the acquisition of aerial LiDAR and the establishment of a GPS base station at the Napa County Airport. The following checks were performed. 1. The ground control and airborne GPS data stream were validated through a fully analytical boresight adjustment. 2. The LiDAR data were checked against the project control prior to being used in DTM (Digital Terrain Model) generation. 3. LiDAR elevation data was validated through an inspection of edge matching and visual inspection for quality (artifact removal). The following methods are used to assure LiDAR data 1. Use of IMU and ground control network utilizing GPS techniques. 2. Use of airborne GPS in conjunction with the acquisition of LiDAR. 3. Measurement of quality control ground survey points within the finished product. The following software is used for the validation 1. Terrascan 2. Fugro EarthData Proprietary Software The minimum expected horizontal accuracy was tested to meet or exceed the National Standard for Spatial Data Accuracy (NSSDA). Horizontal accuracy is 1 meter RMSE or better. The minimum expected vertical accuracy was tested to meet or exceed the National Standard for Spatial Data Accuracy. When compared to GPS survey grade points in generally flat non-vegetated areas, at least 95% of the positions had an error less than or equal to the spec of 18 cm (equivalent to root mean square error of 9 cm if errors were normally distributed). The RMSEz in open terrain is 2.6 cm. The Fundamental Vertical Accuracy (FVA) at the 95% confidence level in open terrain is 5.1 cm. The Consolidated Vertical Accuracy (CVA) at the 95% confidence level in all land cover categories is 6.2 cm. Fugro EarthData, Inc. 20100417 External hard drive 20100225 20100226 20100228 20100301 20100324 20100326 20100403 20100415 20100416 Ground Condition Aerial LiDAR Acquisition Fugro EarthData, Inc. collected ALS60-derived LiDAR over northern San Francisco Bay, CA with a 1 m, nominal post spacing using a Piper Navajo twin engine aircraft. The collection for the entire project area was accomplished on February 25, 26, and 28; March 1, 24, and 26; and April 3, 15, and 16, 2010. The collection was performed by Fugro EarthData, Inc., using a Leica ALS60 MPiA LiDAR system, serial number 113, including an inertial measuring unit (IMU) and a dual frequency GPS receiver. This project required 9 lifts of flight lines to be collected. The lines were flown at an average of 6,250 feet above mean terrain using a pulse rate of 121,300 pulses per second. TerraSurv 20100427 electronic mail system 20091207 20091208 20100223 20100303 20100304 Ground Condition Ground Control TerraSurv under contract to Fugro EarthData, Inc. successfully established ground control for Northern San Francisco Bay, CA. A total of 41 ground control points were acquired. GPS was used to establish the control network. The horizontal datum was the North American Datum of 1983 (NAD83, NSRS2007). The vertical datum was the North American Vertical Datum of 1988 (NAVD88). All acquired LiDAR data went through a preliminary review to assure that complete coverage was obtained and that there were no gaps between flight lines before the flight crew left the project site. Once back in the office, the data is run through a complete iteration of processing to ensure that it is complete, uncorrupted, and that the entire project area has been covered without gaps between flight lines. There are essentially three steps to this processing; 1. GPS/IMU Processing. Airborne GPS and IMU data was immediately processed using the airport GPS base station data, which was available to the flight crew upon landing the plane. This ensured the integrity of all the mission data. These results were also used to perform the initial LiDAR system calibration test. 2. Raw LiDAR Data Processing. Technicians processed the raw data to LAS format flight lines with full resolution output before performing QC. A starting configuration file was used in this process, which contain the latest calibration parameters for the sensor. The technician also generated flight line trajectories for each of the flight lines during this process. 3. Verification of Coverage and Data Quality. Technicians checked flight line trajectory files to ensure completeness of acquisition for project flight lines, calibration lines, and cross flight lines. The intensity images were generated for the entire lift at the required post spacing for the project. The technician visually checked the intensity images against the project boundary to ensure full coverage. The intensity histogram was analyzed to ensure the quality of the intensity values. The technician also thoroughly reviewed the data for any gaps in project area. The technician generated a sample TIN surface to ensure no anomalies were present in the data. Turbulence was inspected for and if it affected the quality of the data, the flight line was rejected and reflown. The technician also evaluated the achieved post spacing against project specified post spacing. Raw LiDAR Data 20100409 Verified LiDAR Data Fugro EarthData, Inc. Rich McClellan Project Manager mailing and physical

7320 Executive Way

Frederick MD 21704 USA 301.948.8550 301.963.2064 rmcclellan@earthdata.com Mon-Fri 8:30am to 5:00pm The following steps describe the Raw Data Processing and Boresight process; 1. The calibration flight lines were first processed with the starting configuration file which contains the latest calibration parameters for the sensor. The boresight for each lift was done individually as the solution may change slightly from lift to lift. 2. Lift boresighting was accomplished using the tri-directional calibration flight lines over the project area. 3. Once the boresighting was done for the calibration flight lines, the adjusted settings were applied on all of the flight lines of the lift and checked for consistency. The technician selected a series of areas in the dataset to be inspected where adjacent flight lines overlay. A routine was run to calculate the misalignment of the adjacent flight lines and a statistical report was generated. The technician analyzed the result and applied more adjustment if necessary to optimize the result for the entire lift. Color coded elevation difference images were generated for all flight line overlaps including cross ties in the lift once the boresight adjustment was complete. The technician reviewed these images to ensure that systematic errors were eliminated for the lift and the results met the project specifications. 4. Once the boresight adjustment was completed for each lift individually, the technician checked and corrected the vertical misalignment of all flight lines and also the matching between data and ground truth. This process included calculating the z bias value for each flight line so that all flight lines are aligned vertically. The entire dataset was then matched to ground control points within the project specified accuracy range. 5. The technician ran a final vertical accuracy check after the z correction. The result was analyzed against the project specified accuracy to make sure it met the project requirements. Verified LiDAR Data 20100524 Boresighted Data Fugro EarthData, Inc. Rich McClellan Project Manager mailing and physical

7320 Executive Way

Frederick MD 21704 USA 301.948.8550 301.963.2064 rmcclellan@earthdata.com Mon-Fri 8:30am to 5:00pm Fugro EarthData, Inc. has developed a unique method for processing LiDAR data to identify and re-classify elevation points falling on vegetation, building, and other above ground structures into separate data layers. The steps are as follows; 1. Fugro EarthData, Inc. utilized commercial software as well as proprietary software for automatic filtering. The parameters used in the process were customized for each terrain type to obtain optimum results. 2. The Automated Process typically re-classifies 90-98% of points falling on vegetation depending on terrain type. Once the automated filtering was completed, the files were run through a visual inspection to ensure that the filtering was not too aggressive or not aggressive enough. In cases where the filtering was too aggressive and important terrain features were filtered out, the data was either run through a different filter or was corrected during the manual filtering process. 3. Interactive editing was completed in 3D visualization software which also provides manual and automatic point classification tools. Fugro EarthData, Inc. used commercial and proprietary software for this process. Vegetation and artifacts remaining after automatic data post-processing were reclassified manually through interactive editing. The hard edges of ground features that were automatically filtered out during the automatic filtering process were brought back into ground class during manual editing. Auto-filtering routines were utilized as much as possible within fenced areas during interactive editing for efficiency. The technician reviewed the LiDAR points with color shaded TINs for anomalies in ground class during interactive filtering. 4. Upon the completion of peer review and finalization of bare earth filtering, the classified LiDAR point cloud work tiles went through a water classification routine based on the collected hydro-flattened water polygons. 5. Upon the completion of peer review and finalization of the classified LiDAR point cloud work tiles, the tiles were reprojected to NAD83 (NSRS2007), UTM zone 10 north, meters; NAVD88, meters, using GEOID09. The data was also cut to the approved tile layout. The classified LiDAR point cloud data is in LAS format after this process. The technician checked the output LAS files for coverage and format. 6. The classified LiDAR point cloud data were delivered in LAS 1.2 format; 2 - ground, 1 - unclassified, 9 - water, 7 - low points/noise, and 12 - overlap points. Boresighted Data 20110420 Classified LiDAR Point Cloud Data Fugro EarthData, Inc Rich McClellan Project Manager mailing and physical

7320 Executive Way

Frederick MD 21704 USA 301.948.8550 301.963.2064 rmcclellan@earthdata.com Mon-Fri 8:30am to 5:00pm The NOAA Coastal Services Center (CSC) received the lidar files in las format. The files contained lidar intensity and elevation measurements. CSC performed the following processing for data storage and Digital Coast provisioning purposes: 1. Data converted from UTM Zone 10 coordinates to geographic coordinates. 2. Data converted from NAVD88 heights to ellipsoid heights using GEOID09. 3. The LAS data were sorted by latitude and the headers were updated. 201105 NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Avenue

Charleston South Carolina 29405 843-740-1200 clearinghouse@noaa.gov 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. 20110706 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 0 Point Point 0.0000001 0.0000001 Decimal degrees North American Datum of 1983 (NAD83) Geodetic Reference System 80 (GRS80) 6378137.000000 298.257222 Ellipsoid 0.01 meters Explicit elevation coordinate included with horizontal coordinates Leica ALS60 MPiA sensor 1 m nominal post spacing see process steps within this record NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Avenue

Charleston SC 29405-2413 843-740-1200 clearinghouse@noaa.gov Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, 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 NOAA Coastal Services Center Clearinghouse Manager mailing and physical Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998