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Short Citation:
National Geodetic Survey, 2023: 2018 NOAA NGS Ortho-rectified 4-band Mosaic of Texas: Galveston to Mustang Island,

Item Identification

Title: 2018 NOAA NGS Ortho-rectified 4-band Mosaic of Texas: Galveston to Mustang Island
Status: Completed
Publication Date: 2020-12

This data set contains ortho-rectified mosaic tiles, created by Fugro in support of the national shoreline mapping program for NOAA NGS. The source imagery was acquired using an ADS100 pushbroom camera. The original images were acquired at a higher resolution to support the final ortho-rectified mosaic.


Ortho-rectified mosaic tiles are an ancillary product of NOAA's Coastal Mapping Program (CMP), created through a wider Integrated Ocean and Coastal Mapping initiative to increase support for multiple uses of the data.

Supplemental Information:

The ground sample distance (GSD) for each pixel is 0.30 m. The imagery was not tide coordinated at the time of acquisition. This data was flown from 12/4/2018-12/20/2018.


Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
Global Change Master Directory (GCMD) Science Keywords
ISO 19115 Topic Category
NOS Data Explorer Topic Category Remotely Sensed Imagery/Photography
None aerial
None coastal
None digital orthophotography
None mosaic
None orthophoto
None photograph
None rectified image
None shoreline

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
None Texas
None U.S. Coastline

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords Aircraft > Aircraft

Physical Location

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

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Imagery
Maintenance Frequency: None Planned
Data Presentation Form: remote-sensing image
Distribution Liability:

Users must assume responsibility to determine the usability of these data. These photographs were obtained for use by NGS during the course of its development of potential final products to fulfill its statutory mission. Although NGS is making these photographs available to others who may find the photographs of value, NGS does not warrant, endorse, or recommend the use of these photographs for any given purpose. NGS is providing these photographs "as is," and NGS disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will NGS be liable to you or any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data. Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners

Data Set Credit: This data set was developed by NOAA., Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division

Support Roles

Data Steward

CC ID: 998208
Date Effective From: 2020
Date Effective To:
Contact (Organization): National Geodetic Survey (NGS)
Address: 1315 East-West Hwy
Silver Spring, MD 20910


CC ID: 998207
Date Effective From: 2020
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Metadata Contact

CC ID: 998209
Date Effective From: 2020
Date Effective To:
Contact (Organization): National Geodetic Survey (NGS)
Address: 1315 East-West Hwy
Silver Spring, MD 20910

Point of Contact

CC ID: 998210
Date Effective From: 2020
Date Effective To:
Contact (Organization): National Geodetic Survey (NGS)
Address: 1315 East-West Hwy
Silver Spring, MD 20910


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 998223
W° Bound: -97.23352
E° Bound: -94.44196
N° Bound: 29.56227
S° Bound: 27.669849

Extent Group 1 / Time Frame 1

CC ID: 998222
Time Frame Type: Range
Start: 2018-12-04
End: 2018-12-20

Spatial Information

Reference Systems

Reference System 1

CC ID: 998218

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:6344
EPSG Name: NAD83(2011) / UTM zone 15N
See Full Coordinate Reference System Information

Reference System 2

CC ID: 998225

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:26914
EPSG Name: NAD83 / UTM zone 14N
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for custom downloads

Data Access Constraints:


Data Use Constraints:

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.

Distribution Information

Distribution 1

CC ID: 998211
Start Date: 2020
End Date: Present
Download URL:
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present)
File Name: Customized Download

Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base.

File Type: Zip
Compression: Zip

Distribution 2

CC ID: 998212
Start Date: 2020
End Date: Present
Download URL:
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present)
File Name: Bulk Download

Bulk download of data files in the original coordinate system.

File Type: GeoTIFF



CC ID: 998213
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML

Information on the NOAA Office for Coastal Management (OCM)


CC ID: 998214
Name: NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
URL Type:
Online Resource
File Resource Format: HTML

The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer.

Technical Environment


OS Independent

Data Quality

Horizontal Positional Accuracy:

This data has been compiled to meet National Standard for Spatial Data Accuracy (NSSDA) ACCURACYr = 1.47m at 95% confidence level; 1)Actual RMSEr tested at 0.37m for UTM14N and 0.29m for UTM15N, 2)Actual Accuracyr NSSDA horizontal tested at 95% = 0.32m for UTM14N and 0.25m for UTM15N 3)Actual CE tested at 95% = 0.21m for UTM14N and 0.17m for UTM15N.

Completeness Report:

A complete iteration of processing (GPS/IMU Processing, Raw Ortho Data Processing, and Verification of Coverage and Data Quality) was performed to ensure that the acquired data was complete, uncorrupted, and that the entire project area had been covered without gaps between flight lines. No void areas or missing data exists.

Quality Control Procedures Employed:

Compliance with the accuracy standard was ensured by the placement of GPS ground control. The following checks were performed. 1. The ground control and airborne GPS data stream were validated through a fully analytical bundle aerotriangulation adjustment in both UTM 14N and UTM15N. The residuals of the adjustment met the required standards for accuracy which are 1 part in 10,000 of the flying height for the horizontal position (X and Y) and 1 part in 9,000 or better of the flying height in elevation (Z). 2. The DTM (Digital Terrain Model) data was checked against the project control. The technician visited and confirmed the accuracy of the project mass points during initial compilation. 3. Any topographic data was checked for edge match, consistency of attribution, and cartographic quality through visual inspection. 4. Digital orthophotography was validated through an inspection of edge matching and visual inspection for image quality.


Lineage Statement:

Fugro collected ADS derived orthos in December 2018 for the TX1803-TB-C AOI with 30cm GSD. Data was collected when environmental conditions meet the criteria specified. Digital imaging shall not be conducted when clouds or cloud shadow obscure the land-water interface or features of navigational significance in the scene. The landwater interface shall not be obscured by snow, ice, smoke, haze, etc. Storm systems and events (e.g. hurricanes, northeasters, and frontal boundaries) that may cause an increase in water levels, tidal heights, and wave activity shall be avoided. Efforts to avoid sun glare shall be taken. Time of day for digital camera imagery is determined by the sun angle which shall not be less than 25 degrees above the horizon at the time of exposure. If imagery is collected between the months of November and February, the sun angle requirement shall not be less the 20 degrees. This data was collected in 22 planned lines, 31 altogether with reflights. Lines are presented below as Line Number - Date Acquired - Universal Time Coordinated (Zulu Time) of Line Beginning - Universal Time Coordinated (Zulu Time) of line Ending:

1 - 12/10/18 - 16:26:24 - 16:49:17

2 - 12/10/18 - 19:48:43 - 20:10:26

3 - 12/13/18 - 17:03:08 - 17:16:02

3 - 12/20/18 - 16:06:20 - 16:15:42

4 - 12/13/18 - 17:35:56 - 17:37:37

4 - 12/13/18 - 17:45:16 - 17:54:56

4 - 12/20/18 - 16:21:41 - 16:29:49

5 - 12/13/18 - 17:58:52 - 18:06:40

5 - 12/20/18 - 16:33:24 - 16:41:28

6 - 12/13/18 - 18:11:06 - 18:18:49

6 - 12/20/18 - 16:44:33 - 16:51:21

7 - 12/13/18 - 18:22:40 - 18:30:41

7 - 12/13/18 - 18:35:58 - 18:37:14

7 - 12/20/18 - 16:55:37 - 17:09:27

8 - 12/13/18 - 18:40:13 - 18:47:22

9 - 12/10/18 - 16:08:54 - 16:11:52

10 - 12/10/18 - 15:39:54 - 15:48:44

11 - 12/10/18 - 17:29:37 - 17:35:44

11 - 12/10/18 - 19:03:00 - 19:29:04

12 - 12/04/18 - 16:35:38 - 16:44:17

13 - 12/04/18 - 16:22:42 - 16:30:50

14 - 12/04/18 - 16:50:50 - 16:54:15

15 - 12/04/18 - 16:59:29 - 17:01:15

16 - 12/10/18 - 16:57:30 - 17:25:21

16 - 12/10/18 - 17:38:40 - 17:39:40

17 - 12/10/18 - 15:13:52 - 15:34:39

18 - 12/04/18 - 15:07:27 - 15:11:37

19 - 12/04/18 - 15:17:54 - 15:31:54

20 - 12/04/18 - 15:36:44 - 15:51:41

21 - 12/04/18 - 15:59:03 - 16:02:00

22 - 12/04/18 - 16:05:42 - 16:07:28


Acquisition and Processing

CC ID: 998219
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Furgro

Process Steps

Process Step 1

CC ID: 998220

The full resolution aerial imagery was color balanced and mosaicked inside of Inpho’s Orthovista platform. The imagery was radiometrically balanced one flight line to another using the rectified ADS 16-bit 4 band (RGB-IR) imagery. No individual manipulation took place with the near-infrared band to maintain as much band integrity as possible. Once the imagery was processed through Inpho’s workflow Fugro Land imported the Orthovista output into their proprietary image database software and completed any additional image feature cleanup. Fugro Land created a Tone Contrast Curve (TTC) to complete the 16-bit to 8-bit image conversion. The final image format delivered was Stripped TIFs that were geo-referenced and accompanied by TIF World Files.

Process Date/Time: 2019-08-01 00:00:00
Process Contact: National Geodetic Survey (NGS)

Process Step 2

CC ID: 998226

Under Fugro’s direction, all surveying activities were performed by Fugro's approved ID/IQ subcontractor Terrasurv, Inc. A total of 20 ground control points to support the lidar collection, along with 35 checkpoints were collected. The National Spatial Reference System (NSRS) was used to provide control for the network. Two Continuously Operating Reference Stations (CORS) were included in the network, as well as thirteen existing NSRS benchmarks. The horizontal datum was the North American Datum of 1983 – NAD83 (2011), epoch 2010.0.

Catalog Details

Catalog Item ID: 63293
GUID: gov.noaa.nmfs.inport:63293
Metadata Record Created By: Maryellen Sault
Metadata Record Created: 2020-12-08 15:24+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-08-15 17:09+0000
Metadata Record Published: 2020-12-14
Owner Org: NGS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2020-12-14
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2021-12-14