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Catalog Details

Summary

Browse Graphic

Short Citation
OCM Partners, 2024: 2015 USGS Lidar DEM: 3DEP Co-Op South Central MS, https://www.fisheries.noaa.gov/inport/item/49438.
Full Citation Examples

Abstract

Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar 0.7m NPS Lidar Data Acquisition and Processing Production Task USGS Contract No. G10PC00057

Task Order No. G15PD00091

Woolpert Order No. 75157

CONTRACTOR: Woolpert, Inc.

This metadata record describes the 1m bare earth Digital Elevation Models (DEMs)for the following counties in Mississippi: Copiah, Lawrence, Lincoln, Pike, and Simpson.

This task is for a high resolution data set of lidar covering approximately 5981 square miles. The lidar data was acquired and processed in compliance to U.S. Geological Survey National Geospatial Program Lidar Base Specification version 1.2. The lidar data was acquired and processed under the requirements identified in this task order. 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 that are used to produce highly detailed Digital Elevation Models (DEMs) of the earth's terrain, man-made structures, and vegetation. The task required the LiDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meters. The final products include classified LAS, one (1) meter pixel raster DEMs of the bare-earth surface in ERDAS IMG Format, and 8-bit intensity images. Gridded products conform to a 1500 m x 1500 m tiling scheme. Each LAS file contains lidar point information, which has been calibrated, controlled, and classified. Additional deliverables include hydrologic breakline data, control data, flight line vectors and tile index provided as ESRI shapefile, lidar processing and survey reports in PDF format, FGDC metadata files for each data deliverable in .xml format, and LAS swath data. Ground conditions: Water at normal levels; no unusual inundation; no snow; leaf off.

In addition to the bare earth DEMs, the topobathy lidar point data are also available. These data are available for custom download here: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6306

Breaklines created from the lidar area also available for download in both gdb and gpkg format at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/6306/breaklines. The DEM and breakline products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA, OCM or its partners.

Original contact information:

Contact Org: Woolpert

Phone: (937) 461-5660

Distribution Information

  • Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

  • Simple download of data files.

Access Constraints:

No restrictions apply to this data.

Use Constraints:

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.

Controlled Theme Keywords

COASTAL ELEVATION, elevation, TOPOGRAPHICAL RELIEF MAPS

Child Items

No Child Items for this record.

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov

Extents

Geographic Area 1

-90.738533° W, -89.65204° E, 32.050978° N, 30.999053° S

Time Frame 1
2015-01-28
Time Frame 2
2015-01-29
Time Frame 3
2015-01-30
Time Frame 4
2015-01-31
Time Frame 5
2015-02-27
Time Frame 6
2015-02-28
Time Frame 7
2015-03-05
Time Frame 8
2015-03-06
Time Frame 9
2015-03-07
Time Frame 10
2015-03-15
Time Frame 11
2015-03-16
Time Frame 12
2015-03-17
Time Frame 13
2015-03-18
Time Frame 14
2015-03-22
Time Frame 15
2015-03-23
Time Frame 16
2015-03-24
Time Frame 17
2015-03-26
Time Frame 18
2015-03-27
Time Frame 19
2015-03-28
Time Frame 20
2015-04-01

Item Identification

Title: 2015 USGS Lidar DEM: 3DEP Co-Op South Central MS
Short Name: ms2015_usgs_3dep_coop_dem_m6307_metadata
Status: Completed
Publication Date: 2017-07-13
Abstract:

Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar 0.7m NPS Lidar Data Acquisition and Processing Production Task USGS Contract No. G10PC00057

Task Order No. G15PD00091

Woolpert Order No. 75157

CONTRACTOR: Woolpert, Inc.

This metadata record describes the 1m bare earth Digital Elevation Models (DEMs)for the following counties in Mississippi: Copiah, Lawrence, Lincoln, Pike, and Simpson.

This task is for a high resolution data set of lidar covering approximately 5981 square miles. The lidar data was acquired and processed in compliance to U.S. Geological Survey National Geospatial Program Lidar Base Specification version 1.2. The lidar data was acquired and processed under the requirements identified in this task order. 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 that are used to produce highly detailed Digital Elevation Models (DEMs) of the earth's terrain, man-made structures, and vegetation. The task required the LiDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meters. The final products include classified LAS, one (1) meter pixel raster DEMs of the bare-earth surface in ERDAS IMG Format, and 8-bit intensity images. Gridded products conform to a 1500 m x 1500 m tiling scheme. Each LAS file contains lidar point information, which has been calibrated, controlled, and classified. Additional deliverables include hydrologic breakline data, control data, flight line vectors and tile index provided as ESRI shapefile, lidar processing and survey reports in PDF format, FGDC metadata files for each data deliverable in .xml format, and LAS swath data. Ground conditions: Water at normal levels; no unusual inundation; no snow; leaf off.

In addition to the bare earth DEMs, the topobathy lidar point data are also available. These data are available for custom download here: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6306

Breaklines created from the lidar area also available for download in both gdb and gpkg format at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/6306/breaklines. The DEM and breakline products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA, OCM or its partners.

Original contact information:

Contact Org: Woolpert

Phone: (937) 461-5660

Purpose:

The purpose of this project is for lidar mapping services in support of the USGS for task name Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Task Order

Notes:

12105

Supplemental Information:

The Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Report, may be accessed here: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/6306/supplemental/ms2015_usgs_3dep_coop_m6306_lidar_report.pdf

The Mississippi Coastal QL2 Lidar with 3DEP Extension Ground Control Survey Report, may be accessed here: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/6306/supplemental/ms2015_usgs_3dep_coop_m6306_survey_report.pdf

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
ISO 19115 Topic Category
elevation
UNCONTROLLED
None DEM
None IMG

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MISSISSIPPI

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Distribution Liability:

Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by any user of this data. Any use will be at the end-user's sole risk. Any conclusions drawn from the analysis of this information are not the responsibility of Woolpert, Inc., the U.S. Geological Survey (USGS), the MS Dept of Environmental Quality, NOAA, the NOAA Office for Coastal Management (OCM) or its partners.

Data Set Credit: Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data.

Support Roles

Data Steward

CC ID: 662719
Date Effective From: 2017-07-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 662721
Date Effective From: 2017-07-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 662722
Date Effective From: 2017-07-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 662720
Date Effective From: 2017-07-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1289623
W° Bound: -90.738533
E° Bound: -89.65204
N° Bound: 32.050978
S° Bound: 30.999053

Extent Group 1 / Time Frame 1

CC ID: 1289603
Time Frame Type: Discrete
Start: 2015-01-28

Extent Group 1 / Time Frame 2

CC ID: 1289604
Time Frame Type: Discrete
Start: 2015-01-29

Extent Group 1 / Time Frame 3

CC ID: 1289605
Time Frame Type: Discrete
Start: 2015-01-30

Extent Group 1 / Time Frame 4

CC ID: 1289606
Time Frame Type: Discrete
Start: 2015-01-31

Extent Group 1 / Time Frame 5

CC ID: 1289607
Time Frame Type: Discrete
Start: 2015-02-27

Extent Group 1 / Time Frame 6

CC ID: 1289608
Time Frame Type: Discrete
Start: 2015-02-28

Extent Group 1 / Time Frame 7

CC ID: 1289609
Time Frame Type: Discrete
Start: 2015-03-05

Extent Group 1 / Time Frame 8

CC ID: 1289610
Time Frame Type: Discrete
Start: 2015-03-06

Extent Group 1 / Time Frame 9

CC ID: 1289611
Time Frame Type: Discrete
Start: 2015-03-07

Extent Group 1 / Time Frame 10

CC ID: 1289612
Time Frame Type: Discrete
Start: 2015-03-15

Extent Group 1 / Time Frame 11

CC ID: 1289613
Time Frame Type: Discrete
Start: 2015-03-16

Extent Group 1 / Time Frame 12

CC ID: 1289614
Time Frame Type: Discrete
Start: 2015-03-17

Extent Group 1 / Time Frame 13

CC ID: 1289615
Time Frame Type: Discrete
Start: 2015-03-18

Extent Group 1 / Time Frame 14

CC ID: 1289616
Time Frame Type: Discrete
Start: 2015-03-22

Extent Group 1 / Time Frame 15

CC ID: 1289617
Time Frame Type: Discrete
Start: 2015-03-23

Extent Group 1 / Time Frame 16

CC ID: 1289618
Time Frame Type: Discrete
Start: 2015-03-24

Extent Group 1 / Time Frame 17

CC ID: 1289619
Time Frame Type: Discrete
Start: 2015-03-26

Extent Group 1 / Time Frame 18

CC ID: 1289620
Time Frame Type: Discrete
Start: 2015-03-27

Extent Group 1 / Time Frame 19

CC ID: 1289621
Time Frame Type: Discrete
Start: 2015-03-28

Extent Group 1 / Time Frame 20

CC ID: 1289622
Time Frame Type: Discrete
Start: 2015-04-01

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6307;

Data Access Constraints:

No restrictions apply to this data.

Data Use Constraints:

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.

Distribution Information

Distribution 1

CC ID: 720904
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6307
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 720905
Download URL: https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/MS_3DEP_COOP_DEM_2015_6307/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 720907
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 720908
URL: https://coast.noaa.gov/dataregistry
URL Type:
Online Resource

URL 3

CC ID: 720909
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 4

CC ID: 720910
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/6306/supplemental/ms2015_usgs_3dep_coop_m6306.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar footprint for the 2015 USGS 3DEP Co-Op MS project.

Activity Log

Activity Log 1

CC ID: 662763
Activity Date/Time: 2017-06-30
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 662762
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718401
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 720906
Activity Date/Time: 2018-02-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Microsoft Windows 7 Version 6.1 (Build 7600); ArcMap 10.2; ArcCatalog 10.2; TerraScan ver. 15.01; TerraModeler ver. 15.01; Geocue 2014.1.21; LP360 2014.1. Approximate size of entire delivery dataset = 3.0TB

Data Quality

Horizontal Positional Accuracy:

Compiled to meet 0.36 meters horizontal accuracy at 95 percent confidence level.; Quantitative Value: 0.36 meters, Test that produced the value: Lidar system specifications are available in the project report

Vertical Positional Accuracy:

LAS data covering the Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Task Order was compared to independent survey control points to determine the NVA of the LAS Swath and of the Bare-Earth DEM. In addition, this LAS data was compared to independent VVA points. Raw LAS Swath Non-Vegetated Vertical Accuracy (NVA) Tested 0.176 meters non-vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.090 meters (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. Bare-Earth DEM Non-Vegetated Vertical Accuracy (NVA) Tested 0.164 meters non-vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.084 meters (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines.; Quantitative Value: 0.176 meters, Test that produced the value: Raw Swath Non-Vegetated Vertical Accuracy (NVA) Tested 0.176 meters non-vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the TIN using all points.; Quantitative Value: 0.164 meters, Test that produced the value: Bare-Earth DEM Non-Vegetated Vertical Accuracy (NVA) Tested 0.164 meters non-vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the DEM.; Quantitative Value: 0.239 meters, Test that produced the value: Vegetated Vertical Accuracy (VVA) Tested 0.239 meters at the 95th percentile reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the DEM. VVA Errors larger than 95th percentile include:

Point 3017, Easting 814793.008, Northing 3535747.708, Z-Error 0.308 meters

Point 3031, Easting 725518.905, Northing 3472151.735, Z-Error 0.296 meters

Point 3041, Easting 780357.999, Northing 3545844.660, Z-Error 0.241 meters

Completeness Report:

The lidar data is visually inspected for completeness to ensure that are no void areas or missing data.

Conceptual Consistency:

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.

Lineage

Sources

Lidar acquisition

CC ID: 1289595
Publish Date: 2015-12-31
Extent Type: Discrete
Extent Start Date/Time: 2015-01-28
Source Contribution:

This data set is the project specified acquired point cloud data. | Type of Source Media: Lidar dataset

Lidar deliverable processing

CC ID: 1289596
Publish Date: 2015-12-31
Extent Type: Discrete
Extent Start Date/Time: 2015-01-28
Source Contribution:

This data set is the project specified lidar deliverables. | Type of Source Media: Lidar dataset

Survey Control Acquisition

CC ID: 1289597
Publish Date: 2015-12-31
Extent Type: Discrete
Extent Start Date/Time: 2015-02-17
Source Contribution:

This data set is the project specified acquired ground control and QAQC control data. | Type of Source Media: Control dataset

Process Steps

Process Step 1

CC ID: 1289598
Description:

Lidar Acquisition

Using two Leica ALS70 (lidar) systems on board a Woolpert aircraft, high density data, at a nominal pulse spacing (NPS) of 0.7 meters, were collected for this task order (approximately 5981 square miles). Leica Specs- AGL = 1,981 meters - Aircraft Speed = 150 Knots, Field of View (Full) = 40 degrees, Pulse Rate = 272 kHz, Scan Rate = 41.0 Hz, with an average side lap of 20%. Multiple returns were recorded for each laser pulse along with an intensity value for each return. Thirty-one (31) missions were flown between January 28, 2015 and April 01, 2015. Six (6) Global Navigation Satellite System (GNSS) Base Stations were used in support of the lidar data acquisition. Specific information regarding latitude, longitude, and ellipsoid height to the L1 phase center is included in the lidar processing report. Data for the task order is referenced to the UTM Zone 15N, North American Datum of 1983 (2011), and NAVD88, in meters. 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 ALS70 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

Process Date/Time: 2015-01-28 00:00:00

Process Step 2

CC ID: 1289599
Description:

Lidar ground control and QAQC control Acquisition

The field crew utilized Real-Time Kinematic (RTK) GPS surveying throughout most of the ground control data collection process. Using RTK GPS techniques, observations were performed on a total of 89 LiDAR control points and 470 ground control quality check points. The survey was conducted using a 1-second epoch rate, in a fixed solution RTK mode, with each observation lasting between 60 to 180 seconds. Each station was occupied twice to insure the necessary horizontal and vertical accuracies were being met for this photogrammetric project.

Process Date/Time: 2015-02-17 00:00:00

Process Step 3

CC ID: 1289600
Description:

Lidar Deliverable Processing

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 homogeneous 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 Default (Class 1), Ground (Class 2), Low Noise (Class 7), Water (Class 9), Ignored Ground (Class 10), 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, 1 meter pixel size DEM files in ERDAS IMG format, 1 meter pixel size 8-bit Intensity files in GeoTIFF format, and Hydrologic Breakline data in ESRI shape file format. The method used to create the DEM consisted of isolating the ground (class 2) points and introducing 3-d breakline data derived from delineating hydrologic features and applying USGS v1.2 hydro flattening specification z-values. This combined dataset was then processed into a gridded format for additional QAQC to ensure DEM quality. Following QAQC process completion, a gridded raster file was created on a per tile basis. The task order projection information was applied to the final raster dataset. Prior to delivery, all raster files were visually reviewed to ensure coverage and reviewed using automated processes to ensure proper formatting.

Process Date/Time: 2015-01-28 00:00:00

Process Step 4

CC ID: 1289601
Description:

The NOAA Office for Coastal Management (OCM) received the data in img format. The bare earth raster files were at a 1 m grid spacing. The data were in UTM Zone 15 and UTM Zone 16 coordinates and NAVD88 elevations in meters. OCM copied the raster files to database and https for Digital Coast storage and provisioning purposes.

Process Date/Time: 2017-06-13 00:00:00

Catalog Details

Catalog Item ID: 49438
GUID: gov.noaa.nmfs.inport:49438
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:13+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2024-01-10 18:56+0000
Metadata Record Published: 2024-01-10
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16