Woolpert 20171031 Project level metadata Indiana Statewide Lidar 2017 B17 Base Option Data Acquisition and Processing Production Task USGS Contract No. G16PC00022 Task Order No. G17PD00269 Woolpert Order No. 77267 CONTRACTOR: Woolpert, Inc. This task is for a high resolution data set of lidar covering approximately 4,690 square miles covering Adams, Allen, DeKalb, Huntington, Kosciusko, Lagrange, Noble, Steuben, Wabash, Wells, and Whitley County in NE Indiana. The lidar data was acquired and processed in compliance with U.S. Geological Survey National Geospatial Program Lidar Base Specification version 1.2. Lidar data is a remotely sensed high resolution elevation data collected by an airborne platform. The lidar sensor uses a combination of laser range finding, GPS positioning, and inertial measurement technologies. The lidar systems collect data point clouds used to produce highly detailed Digital Elevation Models (DEMs) of the earth's terrain, man-made structures, and vegetation. This task required the lidar data to be collected at a nominal pulse spacing (NPS) of 0.70 meters. The lidar data was acquired and processed under the requirements identified in this task order. Indiana Statewide Lidar 2017 B17 Base Option Lidar task order was processed and delivered in NAD83 (HARN), StatePlane Indiana East FIPS 1301, US Feet, NAVD88 Geoid12B US Feet. Final products include; LAS swath data, classified LAS tiles, raster DEMs of the bare-earth surface in Erdas IMG Grid Format, and 8-bit gray scale intensity images. Tiled deliverable products conform to a 5,000 US feet x 5,000 US feet tiling scheme and are named according to Indiana’s existing statewide Ortho-Lidar tile grid of which there are 5,230 tiles. Each LAS file contains lidar point information, which has been calibrated and controlled. Additionally, each tiled LAS file was classified per task order requirements. Additional deliverables include hydrologic breakline data, survey control and checkpoint data, and bridge abutment breaklines. In addition, reporting and metadata information includes; lidar processing and survey reports in PDF format, FGDC metadata files for each data deliverable in .xml format, and a project tile index all provided in Esri format. Ground conditions: Water at normal levels; no unusual inundation; no snow; leaf off. This project will support the state of Indiana and the Natural Resources Conservation Service (NRCS) in Indiana. USGS NGP Base Specifications v1.2 Leica ALS80 infinite 0.70 2.3 0.70 2.3 2377 150 40 35.5 346 5 2.5 1064 1 0.20 1731 25 GEOID12B NAD83 (HARN), StatePlane Indiana EastFIPS 1301 0 0 0 0 0 0 1.4 6 Geometrically unreliable points were identified using a combination of automated and manual techniques and subsequently classified as high or low noise and given the standard Withheld bit. Swath "overage" points were identified in these files using the standard LAS overlap bit. 16 1 Processed, but unclassified 2 Bare-earth 7 Low noise 9 Water 10 Ignored ground 17 Bridge Decks 18 High Noise 20170308 20170309 20170311 20170312 20170316 20170321 20170322 20170323 20170324 20170329 20170401 20170402 ground condition Complete As needed -86.099528 -84.779906 41.768459 40.557541 None Lidar Project Level None Indiana Lagrange County Steuben County DeKalb County Kosciusko County Whitley County Allen County Adams County Wells County Huntington County Wabash County Noble County No restrictions apply to this data. None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. Woolpert mailing and physical address

4454 Idea Center Blvd

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Standard Time Microsoft Windows 7 Version 6.1 (Build 7600); ArcMap 10.3; ArcCatalog 10.3; TerraScan ver. 17; TerraModeler ver. 17; Geocue 2014.1.21; LP360 2015.1. All formatted data cover the entire area specified for this project and are validated using a combination of commercial lidar processing software, GIS software, and proprietary programs to ensure proper formatting and loading prior to delivery. The lidar data is visually inspected for completeness to ensure that are no void areas or missing data. Produced to meet 0.432 meters horizontal accuracy at 95 percent confidence level. 0.432 meters Lidar system specifications are available in the project report This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class. Woolpert 20171031 Dayton, OH Woolpert Inc Lidar dataset 20170308 ground condition Indiana Statewide Lidar 2017 B17 Base Option This data set is the project specified acquired point cloud data. Woolpert 20171031 Dayton, OH Woolpert Inc. Control dataset 201703 ground condition Indiana Statewide Lidar 2017 B17 Base Option This data set is the project specified acquired ground control and QAQC control data. Woolpert Inc 20171031 Dayton, OH Woolpert Inc Lidar dataset 20170308 ground condition Indiana Statewide Lidar 2017 B17 Base Option This data set is the project specified lidar deliverables. Woolpert 20171031 Dayton, OH Woolpert Geospatial Services 3-d breakline dataset 20170308 ground condition Indiana Statewide Lidar 2017 B17 Base Option This data set is the project specified hydrologic breakline deliverable. Woolpert 20171031 Dayton, OH Woolpert Geospatial Services vector dataset 20170308 ground condition Indiana Statewide Lidar 2017 B17 Base Option This data set is the project specified tile index and data extent. Using three Leica ALS80 (lidar) systems on board Woolpert aircraft, high density data, at a nominal pulse spacing (NPS) of 0.7 meters, were collected for this task order. Leica Specs- AGL = 2,377 meters - Aircraft Speed = 150 Knots, Field of View (Full) = 40 degrees, Pulse Rate = 346 kHz, Scan Rate = 35.5 Hz, with an average side lap of 25%. Multiple returns were recorded for each laser pulse along with an intensity value for each return. Twenty-two (22) missions were flown from March 8 through April 2 of 2017. Woolpert survey crews were onsite, operating a Global Navigation Satellite System (GNSS) Base Station for the airborne GPS support. Specific information regarding latitude, longitude, and ellipsoid height to the L1 phase center is included in the lidar processing report. Indiana Statewide Lidar 2017 B17 Base Option Lidar task order was processed and delivered in NAD83 (HARN), StatePlane Indiana EastFIPS 1301, US Feet. The geoid used to reduce satellite derived elevations to orthometric heights was GEOID12B. Once the data acquisition and GPS processing phases are complete the lidar data was processed immediately to verify the coverage had no voids. The GPS and IMU data was post processed using differential and Kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project. The SBET was used to reduce the lidar slant range measurements to a raw reflective surface for each flight line. The coverage was classified to extract a bare earth digital elevation model (DEM) and separate last returns. The ALS80 calibration and system performance is verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing flight lines. The scanner scale factor and vertical accuracy is calculated through comparison of lidar data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw lidar data is reduced using the refined misalignment angles. Indiana Statewide Lidar 2017 B17 Base Option 20170308 1200 Woolpert Geospatial Services mailing and physical address

4454 Idea Center Blvd

Dayton OH 45430 USA (937) 461-5660 unknown unknown Woolpert field crews utilized Woolpert-owned, Trimble Navigation R series multi-frequency GPS receivers. Field personnel generated RTK vectors through the use of Sierra Wireless Raven XT Code Division Multiple Access (CDMA) modems and Trimble Navigation Continually Operating Reference Stations (CORS) Whenever possible, RTK observations were performed on all new LiDAR control points in order to collect data efficiently and accurately. The survey was conducted using a 1-second epoch rate, in a fixed solution RTK mode, with each observation lasting approximately 180 seconds. Each station was occupied twice to ensure the necessary horizontal and vertical accuracies were being met for this project. RTK surveys were performed where cellular data coverage was available and where baseline distance accuracy was maintained. Indiana Statewide Lidar 2017 B17 Base Option 201703 1200 Woolpert Geospatial Services mailing and physical address

4454 Idea Center, Blvd

Dayton OH 45430 USA (937) 461-5660 unknown The individual flight lines were inspected to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches to obtain a homogenous coverage throughout the project area. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" lidar returns. This process determined Processed, but unclassified (Class 1), Bare-earth ground (Class 2), Low Noise (Class 7), Water (Class 9), Ignored Ground (Class10), Bridge Decks (Class 17), and High Noise (Class 18). The bare-earth (Class 2 - Ground) lidar points underwent a manual QA/QC step to verify the quality of the DEM as well as a peer-based QC review. This included a review of the DEM surface to remove artifacts and ensure topographic quality. Classification of water (class 9) and ignored ground (class 10) was completed via the use of the hydrologic breaklines collected for the hydro-flattening phase. The overlap classes were determined by first identifying the overlapping areas and reclassifying the LAS data by offset from a corridor. This allows the returns located on the edge of the swath to be removed from the bare earth coverage in an effort to produce a more uniform data density. The returns determined to be overlap including overlap default, ground, water, and ignored ground are then applied an overlap flag and reclassified to their respective standard classification value. The surveyed ground control points are used to make vertical adjustments to the data set and to perform the accuracy checks and statistical analysis of the lidar dataset. Supervisory QC monitoring of work in progress and completed editing ensured consistency of classification character and adherence to project requirements across the entire project area. The resulting deliverables for this task order consist of classified LAS file in LAS 1.4 format, Raw Swath LAS files in LAS 1.4 format, 2.5 US Feet pixel size DEM files in ERDAS IMG format, 8-bit gray scale Intensity files in GeoTIFF format, Hydrologic and Bridge abutment breakline data in ESRI Geodatabase format. Indiana Statewide Lidar 2017 B17 Base Option 20170308 1200 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Time The compilation procedure included use of lidar intensity, bare earth surface model, point cloud data, and open source imagery in an effort to manually compile hydrologic features in a 2-d environment. Following the compilation phase, a separate process was used to adjust the breakline data to best match the water level at the time of the lidar collection. Any ponds and/or lakes were adjusted to be at or just below the bank and to be at a constant elevation. Any streams were adjusted to be at or just below the bank and to be monotonic. Manual QAQC and peer-based QC review was performed on all delineated data to ensure horizontal placement quality and on all adjusted data to ensure vertical placement quality. Bridge breaklines were also compiled in efforts to generate an accurate DEM product. The final hydrologic and bridge breakline product was delivered in ESRI Geodatabase format and was also used in the processing of the DEM deliverable. Indiana Statewide Lidar 2017 B17 Base Option Breakline Deliverable Processing 20170308 1200 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 8:00 a.m. to 5:00 p.m. Eastern Time Tile Size: 5,000 US Feet x 5,000 US Feet. Tiles were provided by the USGS. Indiana Statewide Lidar 2017 B17 Base Option Tile Index and Data Extent 20170308 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 8:00 a.m. to 5:00 p.m. Eastern Time Point NAD 1983 HARN StatePlane Indiana East FIPS 1301 0.9999666666666667 -85.66666666666667 37.5 328083.3333333333 820208.3333333333 coordinate pair 0.01 0.01 US Feet D North American 1983 HARN GRS 1980 6378137.0 298.257222101 North American Vertical Datum of 1988 0.01 US Feet Explicit elevation coordinate included with horizontal coordinates USGS/NGTOC mailing and physical address

1400 Independence Rd.

Rolla MO 65401 USA (573) 308-3587 Unknown Unknown The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and within the limitations of the data for which it was requested and prepared, in general, and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data. It is not appropriate to use the related graphics as data. Woolpert gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from a Woolpert server, and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully upon Woolpert’s computer system, no warranty, expressed or implied, is made regarding the utility of the data on another system, or for general or scientific purposes; nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. 20171031 Woolpert mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Time FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Unclassified Unclassified Unclassified