gov.noaa.csc.maps:2006_FL_SWFWMD_Upper_Myakka_m69 Southwest Florida Water Management District (SWFWMD) 20061204 Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html EarthData International collected ALS-50-derived LiDAR over Upper Myakka Florida with a one-meter post spacing. The period of collection was between 3 October and 12 October 2006. This data set falls in Manatee County. The collection was performed by EarthData Aviation, using a Leica ALS-50 LiDAR system, including an inertial measuring unit (IMU) and a dual frequency GPS receiver. This project required six lifts of flight lines to be collected. The product generated consisted of LiDAR bare earth elevation models in LAS format. This data set is one component of a digital terrain model (DTM) for the Southwest Florida Water Management District's FY2005 Digital LiDAR Project (H048), encompassing approximately 291 square miles across Manatee County. The 2005 LiDAR dataset is comprised of 3-D mass points delivered in the LAS file format based on the District's 5,000' by 5,000' grid (325 cells). The other DTM component is 2-D and 3-D breakline features in the ESRI ArcGIS Personal Geodatabase format. In accordance with the 2005 SWFWMD Topographic Database Design, the following breakline closed water bodies (lakes, reservoirs, etc) as 3-D polygons; linear hydrographic features (streams, canals, swales, embankments, etc) as 3-D breaklines; coastal shorelines as 3-D linear features; edge of pavement road features as 3-D breaklines; soft features (ridges, valleys, etc.) as 3-D breaklines; obscured vegetation polygons as 2-D polygons; overpasses and bridges as 3-D breaklines; 1-foot contours for visualization purposes; and island features as 3-D polygons. Breakline features were captured to develop a hydrologically correct DTM. Contours (1-foot) were generated from the DTM that meet the National Map Accuracy Standards for 2-foot contours (FEMA specifications). Bare earth LiDAR mass point data display a vertical accuracy of at least 0.3-feet root mean square error (RMSE) in open unobscured areas. This project was designed to provide topographic information to the Southwest Florida Water Management District to support regulatory, land management and acquisition, planning, engineering and habitat restoration projects. LiDAR bare-earth elevation models in LAS format. The Upper Myakka Report of Topographic Survey may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/swfwmd 20061003 20061012 Ground Condition Complete As needed -082.451361 -081.879906 27.555841 27.176931 ISO 19115 Topic Category Elevation None Bathymetry/Topography LiDAR Bare Earth Terrain Model Elevation Surface Geographic Names Information System US Florida Southwest Florida Manatee County Upper Myakka 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. Southwest Florida Water Management District Mapping and GIS section Mailing and physical address

Mapping and GIS Section Southwest Florida Water Management District 2379 Broad Street

Brooksville FL 34604-6899 USA 352.796.7211 352.540.6018 9:00am - 5:00pm Southwest Florida Water Management District Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535 The boresight of the LiDAR was processed against the ground control for this project which consisted of 11 LiDAR ground survey points and 1 ABGPS base station at the operation airport. The control points were processed to FL State Plane West NAD83/1999, and vertically to Mean Sea Level (MSL), NAVD 88 in U.S. Survey Feet. Airborne GPS data was collected during the acquisition mission for each flight line. During the data acquisition the Positional Dilution of Precision (PDOP) for the airborne GPS (ABGPS) was monitored and held at or below 3.5 when possible. The control points were measured by technicians using Terrascan and proprietary software and applied to the boresight solution for the project lines. An independent check of the accuracy of the bare earth LiDAR product was conducted using land cover quality control points. Compliance with the accuracy standard was ensured by the collection of GPS ground control after the acquisition of aerial LiDAR and the establishment of a GPS base station at the Sarasota-Bradenton International 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 DTM (Digital Terrain Model) data were checked against the project control. 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 accuracy: 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. EarthData Proprietary Software The minimum expected horizontal accuracy was tested to meet or exceed a 4.5-foot horizontal accuracy at 95 percent confidence level using RMSE(r) x 1.7308 as defined by the National Standards for Spatial Data Accuracy (NSSDA). Compiled to meet 1.0 meter horizontal accuracy at the 95% confidence level. The vertical accuracy for LiDAR data over well-defined surfaces meets the Federal Geographic Data Committee's (FGDC) published National Standard for Spatial Data Accuracy (NSSDA). Vertical accuracies at the 95 percent confidence level for flat terrain were required, and all systematic errors were eliminated to the greatest extent possible and the errors were normally distributed. Accuracy was tested to meet an 18.28 cm (0.6 foot) fundamental vertical accuracy at 95 percent confidence level using RMSE (z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA). EarthData Aviation 20061012 1200 External hard drive 20061003 20061012 Ground Condition Aerial Acquisition EarthData International collected ALS-50-derived LiDAR over Upper Myakka Florida with a one-meter post spacing using aircraft number N62912. The period of collection was between 3 October and 12 October 2006. The collection was performed by EarthData Aviation, using a Leica ALS-50 LiDAR system, serial number ALS039, including an inertial measuring unit (IMU) and a dual frequency GPS receiver. This project required six lifts of flight lines to be collected. The lines were flown at an average of 3000 feet above mean terrain using a pulse rate of 75,000 pulses per second. Kevin J. Chappell 20060530 Model 1200 Paper 20060307 20060413 Ground Condition Ground Control EarthData International was contracted to provide mapping services in the Upper Myakka area of Florida. Aerial imagery and LiDAR data was collected for the project area. EarthData subcontracted the ground survey tasks to Kevin J. Chappell, Florida PSM License No. LS5818. The Global Positioning System (GPS) was used to establish the control network. There were a total of 41 stations occupied for this project. There were 19 new photo control stations, 11 new LIDAR control stations, 4 temporary GPS base stations, 5 existing NSRS control stations, 1 CORS station, and 1 airborne GPS base station used by the flight crew. The final network was adjusted using least squares. A free adjustment and constrained adjustment were performed. The results of the free adjustment indicate an external network accuracy of better than 3 cm in relation to NAD 1983 1999 and NAVD 1988. The results of the constrained adjustment indicate an internal network accuracy of better than 3 cm in relation to NAD 1983 1999 and NAVD 1988. WilsonMiller, Inc. 20070330 Map 1200 Paper 20070115 20070212 Ground Condition LiDAR Land Cover QC Survey EarthData International was contracted to provide mapping services in the Upper Myakka area of Florida. LiDAR data was collected for the project area. EarthData subcontracted the quality control survey tasks to WilsonMiller, Inc. The Global Positioning System (GPS) was used to establish the control network. There were a total of 93 stations occupied for this project. 64 new LiDAR land cover control stations, 4 NGS base control stations, 8 FDEP 2005 base control stations, and 9 NGS control check stations. The airborne GPS data were processed and integrated with the IMU. The results were imported into the processing system for use in the LiDAR boresight. The raw LiDAR data was downloaded onto a production server. The ground control and airport GPS base station were used in conjunction with the processed ABGPS results for the LiDAR boresight. The properly formatted processing results were used for subsequent processing. Boresight 20061115 Boresight EarthData International Harold Rempel Director of Program Management Mailing and physical address

7320 Executive Way

Frederick Maryland 21704 USA 301-948-8550 301-963-2064 hrempel@earthdata.com Mon-Fri 9:00am to 5:00pm EarthData has developed a unique method for processing LiDAR data to identify and remove elevation points falling on vegetation, buildings, and other aboveground structures. The algorithms for filtering data were utilized within EarthData's proprietary software and commercial software written by TerraSolid. This software suite of tools provides efficient processing for small to large-scale, projects and has been incorporated into ISO 9001 compliant production work flows. The following is a step-by-step breakdown of the process. 1. Using the LiDAR data set provided by EarthData Aviation, the technician performs calibrations on the data set. 2. The technician performed a visual inspection of the data to verify that the flight lines overlap correctly. The technician also verified that there were no voids, and that the data covered the project limits. The technician then selected a series of areas from the data set and inspected them where adjacent flight lines overlapped. These overlapping areas were merged and a process which utilizes 3-D Analyst and EarthData's proprietary software was run to detect and color code the differences in elevation values and profiles. The technician reviewed these plots and located the areas that contained systematic errors or distortions that were introduced by the LiDAR sensor. 3. Systematic distortions highlighted in step 2 were removed and the data was re-inspected. Corrections and adjustments can involve the application of angular deflection or compensation for curvature of the ground surface that can be introduced by crossing from one type of land cover to another. 4. The LiDAR data for each flight line was trimmed in batch for the removal of the overlap areas between flight lines. The data was checked against a control network to ensure that vertical requirements were maintained. Conversion to the client-specified datum and projections were then completed. The LiDAR flight line data sets were then segmented into adjoining tiles for batch processing and data management. 5. The initial batch-processing run removed 95% of points falling on vegetation. The algorithm also removed the points that fell on the edge of hard features such as structures, elevated roadways and bridges. 6. The operator interactively processed the data using LiDAR editing tools. During this final phase the operator generated a TIN based on a desired thematic layer to evaluate the automated classification performed in step 5. This allowed the operator to quickly re-classify points from one layer to another and recreate the TIN surface to see the effects of edits. Geo-referenced images were toggled on or off to aid the operator in identifying problem areas. The data was also examined with an automated profiling tool to aid the operator in the reclassification. 7. The point cloud data were delivered in LAS format. 10 - points in wetlands and ditches, 9 - points in water, 2 - ground points, and 1 - all other. LiDAR elevation data 20070115 LiDAR EarthData International Harold Rempel Director of Program Management Mailing and physical address

7320 Executive Way

Frederick Maryland 21704 USA 301-948-8550 301-963-2064 hrempel@earthdata.com Mon-Fri 9:00am to 5:00pm The NOAA Coastal Services Center (CSC) received the files in LAS format. The files contained Lidar elevation measurements. The data was in Florida State Plane Projection and NAVD88 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 Florida State Plane West 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. 20080125 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. 20090714 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 0.000000001 0.000000001 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) 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 for the analysis of this information are not the responsibility of the Coastal Services Center or its partners. This data can be obtained on-line at the following URL: http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html 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) CEM Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998