gov.noaa.csc.maps:2007_FL_SWFWMD_Hillsborough_m79 Southwest Florida Water Management District (SWFWMD) 20080101 Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html EarthData International collected ADS-50 derived LiDAR over a portion of Hillsborough and Manatee Counties with a one meter post spacing. The period of collection was between 12 January and 20 January 2007. 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 eleven lifts of flight lines 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 FY 2007 Hillsborough County - Watershed Management Plan Topographic Information Mapping (L762) and FY 2007 Little Manatee River Watershed Management Plan (L604), encompassing approximately 453 square miles in Hillsborough County and 82 square miles in Manatee County. The 2007 LiDAR data set is comprised of 3-D mass points delivered in the LAS file format based upon the District's 5,000' x 5,000' grid with 505 cells in the Hillsborough area with an additional 91 cells in the Little Manatee area. An additional 12 cells were added to the Hillsborough area. The other DTM component is 2-D and 3-D breakline features in the ESRI ArcGIS Personal Geodatabase format. The breaklines were collected using Aerial photography captured for the Southwest Florida Water Management District FY 2007 Digital Orthophoto (B089) Central District One-foot Orthophoto project. The stream breaklines were the corrected to the hillshade LiDAR data. Contours (2-foot) were generated from the DTM that meet the National Standard for Spatial Data Accuracy (NSSDA) 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 (RMSE) in open and unobscured areas with standard reflective quality. 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 Hillsborough County Report of Topographic Survey Report may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/swfwmd 20070112 20070120 Ground condition Complete None planned -082.407173 -082.065375 28.185085 27.634385 ISO 19115 Topic Category Elevation None Bathymetry/Topography LiDAR Bare Earth Terrain Model Elevation Surface Geographic Names Information System US Florida Southwest Florida Hillsborough County Manatee 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. 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 None Unclassified None Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535 The bore sight 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 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 bore sight 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 bore sight 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 1.37 m (4.5 ft) horizontal accuracy at 95 percent confidence level using RMSE(r) x 1.7308 as defined by the National Standards for Spatial Data Accuracy (NSSDA). 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 a 14.94 cm (0.5 ft) 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 20070120 Remote-sensing image 1200 External hard drive 20070112 20070120 Ground condition Aerial Acquisition EarthData International collected ALS-50-derived LiDAR over Upper Myakka Florida with a one-meter post spacing using aircraft number N2636P. The period of collection was between 12 January and 2o January 2007. The collection was performed by EarthData Aviation, using a Leica ALS-50 LiDAR system, serial number ALS036, including an inertial measuring unit (IMU) and a dual frequency GPS receiver. This project required eleven lifts of flight lines to be collected. The lines were flown at an average of 3400 feet above mean terrain using a pulse rate of 75,000 pulses per second. Kevin J. Chappell 20070218 Diagram 1200 Paper 20060114 20070313 Ground Condition Ground Control For a previous SWFWMD project (Upper Myakka) EarthData subcontracted the ground survey tasks to Kevin J. Chappell, Florida PSM License No. LS5818. Points that fell within the Hillsborough Little Manatee project area were incorporated as ground control points along with newly acquired points. 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. Additionally, there were a total of 17 stations occupied for this project. There were 9 new LIDAR control stations for Little Manatee and 32 points for Hillsborough, and 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. Eighty LiDAR QC points, broken down into four sets of urban, bare und, brush and forest were collected. A full survey control report has been provided to SWFWMD. The airborne GPS data were processed and integrated with the IMU. The results were imported into the processing system for use in the LiDAR bore sight. 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 bore sight. The properly formatted processing results were used for subsequent processing. Bore sight 20070327 Bore sight Fugro EarthData, Inc. Frank Sokoloski Project Manager Mailing and physical address

7320 Executive Way

Frederick Maryland 21704 USA 301-948-8550 301-963-2064 fsokoloski@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. Lidar editing workflow process for 2007 SWFWMD 1.Initial Lidar classification - initial classification is performed by separating the last return points and other return points into different files. Only last return points will be used in Bare Earth editing. This step is accomplished during pre-processing phase. The First of Many and intermediate returns will be merged back with last returns after Bare Earth Editing and QC is completed for point cloud deliverables. 2. Lidar editing - the Lidar Last Return is edited to bare earth using a combination of automated and manual filtering techniques. Existing orthophotography over the project area will be used as a reference to ensure that the editor is correctly classifying points in areas that are either heavily vegetated or ambiguous in nature. Each tile will be individually edited to make sure noise and vegetation points have been reclassified properly. 3. QC of Lidar classification - immediately following Lidar Editing, QC is performed to verify that points are correctly classified. Each tile will be individually viewed and will be checked for consistent point density for each classification and land cover type. For example, consistent density in marsh areas and open fields will be verified. Each tile will be checked to make sure noise and vegetation points have been removed. Areas of heavy vegetation will be reviewed in profile to ensure redundant check. An overall QC of the entire project area will be done in blocks of tiles to ensure consistency between tiles. 4. Breaklines - photogrametrically-collected breaklines will be compiled to delineate specified features in accordance with the project scope. This is an interactive process using photogrametrically-derived stereo pairs in a 3D environment. Features typically collected would define tops and bottoms of slopes, roads, ditches, ponds, rivers and lakes. Breaklines in wetland areas will be collected with sufficient detail to ensure that hydrographic features are correctly represented to support generation of 1' contours to the 2' vertical accuracy requirement. The wetland breaklines will be collected as closed polygons and will be used in Step 8 for reclassifying wetland points. 5. QC of breaklines - breaklines will be verified in a stereo environment by senior technicians who were not involved in the compilation. Wetland boundaries will be verified using existing orthophotography and lidar hill shades color-coded by elevation. This process will be used to ensure that water conditions at time of lidar acquisition were consistent with the imagery used to compile breaklines. If there are any significant discrepancies, breaklines will be modified as necessary. 6. Streams are verified against Lidar hill shades to more accurately locate and define the path. 7. Breakline draping - following this QC step, breaklines will be draped to the lidar ground points. This will include roads but will exclude ditches. All vector data is reviewed after this process to assure that vectors have been properly assigned elevations in comparison to the lidar surface. 8. Reclassification - lidar points in wetlands and along ditches will be reclassified to Class 10. Islands in water Class 10 is a new classification not defined in the SWFWMD scope of work. 9. Final lidar QC - a TIN surface will be generated from lidar ground points and breaklines for a final QC. This step will ensure that the terrain is consistent and there are no anomalies present. 10. Formatting - the final lidar tiles will be formatted for delivery. The edited Lidar Last return points and the First of Many and Intermediate return points are merged together to complete the Point Cloud deliverable. This step will also include the restoration of header information that is removed during processing using Terrascan software. In order to restore this data and provide SWFWMD-required information, EarthData has written a program to ensure the proper data is added to the file header. 11. Deliverables - Breakline Geodatabase deliverable files are created. Contours are generated, a visual QC of contours is performed, and the geodatabase deliverable is created. LiDAR elevation data 20070514 LiDAR Fugro EarthData, Inc Frank Sokoloski Project Manager Mailing and physical address

7320 Executive Way

Frederick Maryland 21704 USA 301-948-8550 301-963-2064 fsokoloski@earthdata.com Mon-Fri 8:30 am to 5:00 pm Contour Creation after the Lidar is refined to the Bare Earth surface this surface was combined with 2D photogrametrically collected and draped to the Lidar surface to establish an elevation on the breakline. The breakline location was also observed in relation to where the lidar indicated terrain breaks. In areas that were obscured, such as dense vegetation, the lidar data took precedence. As a general rule the lidar data took precedence. After the breaklines and lidar data were reconciled to each other the data was hydrologically enforced to make sure that the flow on the streams was down hill. MicroStation is then used to generate the contours. The contours are created at 1 foot with a 2 foot specification. After the contours are created they are then reviewed for accuracy and consistency. After the review is completed the contours are translated into an ESRI geodatabase for delivery. Lidar Data and compiled breaklines 20080101 The NOAA Coastal Services Center (CSC) received the files in LAS format. The files contained Lidar intensity and 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 Zone 0902 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. 4. Vertical unit of measure converted from feet to meters. 20080428 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 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 from the analysis of this information are not the responsibility of the Southwest Florida Water Management District (SWFWMD), 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 None This data is not valid without the signed and sealed Florida MTS Report of Specific Purpose Survey, FY2007 Hillsborough County Watershed Management Plan Topographic Information Mapping (L762) Refer to this report for user constraints.