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Short Citation:
National Centers for Coastal Ocean Science, 2023: Estimated Bathymetry of the U.S. Virgin Islands,

Item Identification

Title: Estimated Bathymetry of the U.S. Virgin Islands
Short Name: usvi_bathy_metadata
Status: Completed
Publication Date: 2004-02-19

This classification of estimated depth represents the relative bathymetry of the U.S. Virgin Islands shallow waters based on Landsat imagery for NOAA's Coastal Centers for Monitoring and Assessment (CCMA). This data supports mapping and research activities of NOAA NOS. These data were created for the NOS Summit-to-Sea project. This project determines relationships between terrestrial and bethic change. The data were created using NOS developed algorithms. Bathymetry was derived from six Landsat images of different dates for the USVI. The final bathymetry layer was derived from a per pixel median analysis of th 6 bathymetric layers. The results were verified using field collected depth supplied by NOAA. Depths are only reported within the shallow environment as determined by maximum penetration of band 1 (blue) of Landsat TM.


To map the bathymetry of St. Croix shallow water environment in support of the U.S. Coral Reef Task Force (CRTF)




Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
None Bathymetry/Topography
None Environmental Monitoring

Spatial Keywords

Thesaurus Keyword

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: raster digital data
Distribution Liability:

These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

Data Set Credit: NOAA Summit-to-Sea Project, World Resources Institute (WRI)

Support Roles

Data Steward

CC ID: 476297
Date Effective From: 2004-02-19
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address:


CC ID: 476299
Date Effective From: 2004-02-19
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address:

Metadata Contact

CC ID: 476300
Date Effective From: 2004-02-19
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address:

Point of Contact

CC ID: 476298
Date Effective From: 2004-02-19
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address:

Principal Investigator

CC ID: 476301
Date Effective From: 2004-02-19
Date Effective To:
Contact (Person): Battista, Tim
Email Address:


Currentness Reference: Date of the Landsat scenes

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 476304
W° Bound: -65.153532
E° Bound: -64.183436
N° Bound: 18.8841388
S° Bound: 17.594527

Extent Group 1 / Time Frame 1

CC ID: 476303
Time Frame Type: Range
Start: 1985-01-21
End: 2003-03-04

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
Data Access Constraints:


Data Use Constraints:

Not to be used for navigation. Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Distribution Information

Distribution 1

CC ID: 476305
Download URL:

Downloadable and Offline Data

File Type (Deprecated): PCI Geomatica format (.pix) and ERDAS IMAGINE (.img)
Distribution Format: IMG - ERDAS Imagine



CC ID: 476294
URL Type:
Online Resource


CC ID: 476295
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 476317
Activity Date/Time: 2013-07-02

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 476316
Activity Date/Time: 2017-04-05

Converted from FGDC (Federal Geographic Data Committee) CSDGM (Content Standard for Digital Geospatial Metadata) (version FGDC-STD-001-1998) using '' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 585980
Activity Date/Time: 2017-09-13

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 601774
Activity Date/Time: 2017-11-01

Replaced entire Lineage section to populate new Source Contribution field.

Activity Log 5

CC ID: 716786
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Technical Environment


ERDAS Imagine 8.6 on Dell Pentium 3 Windows NT

Data Quality


No formal attribute accuracy report was implemented. However ground truthing data and NOAA nautical charts were used for verification. Post-Processing Steps: None Known Problems: None Spatial Filters: None

Horizontal Positional Accuracy:

Total RMS for horizontal accuracy ranged from 12.6987 to 46.1257.

Vertical Positional Accuracy:

There was no terrain correction in the geo-referencing procedure.

Completeness Report:

Data are complete

Conceptual Consistency:

Checked for zeros in background and made sure all georefrencing was correct.



Estimated depth maps of the St. Croix

CC ID: 601775
Contact Name: NOAA NOS
Publish Date: 2004-02-19
Extent Type: Range
Extent Start Date/Time: 1985-03-10
Extent End Date/Time: 2003-03-04
Citation URL:
Source Contribution:

NOAA NOS | Source Geospatial Form: remote-sensing image | Type of Source Media: DVD, CD-ROM or ftp

Process Steps

Process Step 1

CC ID: 601776

Imported raw data AOI subsets into IMAGINE format from binary. Selected the best, least cloudy image sample for that path/row. We then ran a water reflectance formula (Bi-B4 or Bi-B5, where i= bands 1-3. This transform compensates for sun glint and water surface albedo) through IMAGINE. Once the water reflectance was available the log ratio method of bands 1 and 2 (m1*100*Log(B1-rdeepB1)/Log(B2-rdeepB2)-m0+0.5 where m1=slope and m0=shift) was applied by adjusting variables of slope and shift until the data reflected the field collected depths provided by NOS. (p004r047(20030304) m1=1 m0=95 rdeepBlue=8 rdeedGreen=10 p004r047(20000327) m1=0.85 m0=75 rdeepBlue=10 rdeedGreen=3 p004r047(19910207) m1=1 m0=100 rdeepBlue=15 rdeedGreen=1.6 p004r047(19870417) m1=1 m0=100 rdeepBlue=15 rdeedGreen=1 p004r047_048(20030304) m1=0.9 m0=80 rdeepBlue=9 rdeedGreen=1 p004r047_048(19891023) m1=0.8 m0=95 rdeepBlue=11 rdeedGreen=1 p004r047_048(19220625) m1=0.15 m0=15 rdeepBlue=17 rdeedGreen=1.5 p004r047(20020112) m1=0.9 m0=85 rdeepBlue=6 rdeedGreen=1 p004r047_048(20010125) m1=1 m0=90 rdeepBlue=7 rdeedGreen=2 p004r047(20000327) m1=0.9 m0=75 rdeepBlue=15 rdeedGreen=3 p004r047(19910903) m1=0.8 m0=80 rdeepBlue=9 rdeedGreen=1 p004r048(19850310) m1=1 m0=105 rdeepBlue=32 rdeedGreen=10 p004r048(19920812) m1=0.15 m0=15 rdeepBlue=9 rdeedGreen=1 p004r048(19871119) m1=0.15 m0=10 rdeepBlue=12 rdeedGreen=4) The median analysis was our next step where the layers were stacked then the median for each pixel was detemined.Process Date Range is 20031202 - 20040101

Process Date/Time: 2004-01-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Shallow shelf environment of the USVI

Catalog Details

Catalog Item ID: 39593
GUID: gov.noaa.nmfs.inport:39593
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:53+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+0000
Metadata Record Published: 2018-02-08
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-02-08
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-02-08