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NCCOS Metadata Library > CCMA > Biogeography > Summit-to-Sea >

U.S.V.I. Watershed Outflow Points

Name: U.S.V.I. Watershed Outflow Points
Published: 2005-10-01

Data Set (DS) | National Centers for Coastal Ocean Science (NCCOS)
GUID: gov.noaa.nmfs.inport:39601 | Updated: October 17, 2023 | Published / External

Summary

Item Identification

Keywords

Physical Location

Data Set Info

Support Roles

Extents

Spatial Info

Access Info

Distribution Info

URLs

Activity Log

Tech Environment

Data Quality

Lineage

Child Items

Catalog Details

Short Citation
National Centers for Coastal Ocean Science, 2024: U.S.V.I. Watershed Outflow Points, https://www.fisheries.noaa.gov/inport/item/39601.
Full Citation Examples

Abstract

U.S.V.I. watershed outflow points; areas of maximum flow accumulation within hydrological basins.

http://ccma.nos.noaa.gov/ecosystems/coralreef/summit_sea/summit2seaUSVI.zip

Shapefile

Downloadable Data

Access Constraints:

None

Use Constraints:

Please credit the NOAA Summit-to-Sea project whenever possible. The distribution of this data product by NOAA does not constitute any real or implied responsibility for its accuracy or usefulness.

environment

Type

Title

Entity

usvi_outflow

Point of Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov

Metadata Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov

Geographic Area 1

-65.080435° W, -64.569138° E, 18.403853° N, 17.67665° S

Time Frame 1
2005-10

Title:	U.S.V.I. Watershed Outflow Points
Short Name:	usvi_outflow_metadata
Status:	Completed
Publication Date:	2005-10
Abstract:	U.S.V.I. watershed outflow points; areas of maximum flow accumulation within hydrological basins.
Purpose:	The purpose of this dataset is to provide the locations of sediment and pollution discharge from land into the marine environment. These are locations where the river mouth meets the sea, and thus, pollutants and sediment from land are accumulated.
Notes:	833
Other Citation Details:	NOAA Summit-to-Sea Project

Theme Keywords

Thesaurus

Keyword

ISO 19115 Topic Category

environment

UNCONTROLLED

None

DISCHARGE

None

Environmental Monitoring

None

OUTFLOW POINT

None

RIVER MOUTH

None

WATERSHED

Spatial Keywords

Thesaurus

Keyword

UNCONTROLLED

None

SAINT CROIX

None

SAINT JOHN

None

SAINT THOMAS

None

USVI

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

Data Set Scope Code:	Data Set
Maintenance Frequency:	None Planned
Data Presentation Form:	vector 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)

Data Steward

CC ID: 476536

Date Effective From:	2005-10
Date Effective To:
Contact (Position):	NCCOS Scientific Data Coordinator
Email Address:	NCCOS.data@noaa.gov

Distributor

CC ID: 476538

Date Effective From:	2005-10
Date Effective To:
Contact (Position):	NCCOS Scientific Data Coordinator
Email Address:	NCCOS.data@noaa.gov

Metadata Contact

CC ID: 476539

Date Effective From:	2005-10
Date Effective To:
Contact (Position):	NCCOS Scientific Data Coordinator
Email Address:	NCCOS.data@noaa.gov

Point of Contact

CC ID: 476537

Date Effective From:	2005-10
Date Effective To:
Contact (Position):	NCCOS Scientific Data Coordinator
Email Address:	NCCOS.data@noaa.gov

Principal Investigator

CC ID: 476540

Date Effective From:	2005-10
Date Effective To:
Contact (Person):	Battista, Tim
Email Address:	tim.battista@noaa.gov

Currentness Reference:	Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 476543

W° Bound:	-65.080435
E° Bound:	-64.569138
N° Bound:	18.403853
S° Bound:	17.67665

Extent Group 1 / Time Frame 1

CC ID: 476542

Time Frame Type:	Discrete
Start:	2005-10

Spatial Representation

Representations Used

Vector:	Yes

Vector Representation 1

CC ID: 586019

Point Object Present?:	Yes
Point Object Count:	420

Security Class:	Unclassified
Data Access Constraints:	None
Data Use Constraints:	Please credit the NOAA Summit-to-Sea project whenever possible. The distribution of this data product by NOAA does not constitute any real or implied responsibility for its accuracy or usefulness.

Distribution 1

CC ID: 476544

Download URL:	http://ccma.nos.noaa.gov/ecosystems/coralreef/summit_sea/summit2seaUSVI.zip
Distributor:
Description:	Downloadable Data
File Type (Deprecated):	shp
Distribution Format:	Shapefile

URL 1

CC ID: 476533

URL:	http://ccma.nos.noaa.gov/ecosystems/coralreef/summit_sea/summit2seaUSVI.zip
URL Type:	Online Resource

URL 2

CC ID: 476534

URL:	http://ccma.nos.noaa.gov/ecosystems/coralreef/summit_sea/
URL Type:	Online Resource

Activity Log 1

CC ID: 476556

Activity Date/Time:	2013-07-03
Description:	Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 476555

Activity Date/Time:	2017-04-05
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: 586017

Activity Date/Time:	2017-09-13
Description:	Partial upload of Spatial Info section only.

Description:	Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722

Completeness Report:	N/A
Conceptual Consistency:	N/A

Process Steps

Process Step 1

CC ID: 476531

Description:

Hydrologic modeling allows one to develop a series of data sets from a single elevation data set (derived data sets include slope, flow direction, flow accumulation, basins, and outflow points 1. Hydrologic modeling was based on the hydrologically corrected 30m resolution National Elevation Dataset (NED) from US Geological Survey (USGS.) 2. FLOWDIRECTION was estimated from the DEM. This results in a data set showing which of eight directions every given 30m cell flows. (coded as integer 1,2,4,8,16,32,64, and 128, with 1 being due East.) 3. FLOWACCUMULATION was run on the FlowDIR grid. This results in an integer grid reflecting the number of cells flowing into any given cell. The Flowdirection grid can be used to identify rivers (gut) locations. Any cells above a given value (such as 200) represent a potential gut location. 4. The BASIN command was run on the FlowDirection grid. This produced a dataset of all grid cells discharging to a single outflow point. This includes many tiny basins. To eliminate these tiny basins, a minimum basin size (cell count) threshold was imposed. There is a unique identified (BASIN_ID) within each file to identify the basin. 5.The outflow points were determined by locating the point of maximum flow within each basin. These are identified by using the map calculator function in ArcMap, to identify the cell count for the basin that matches the maximum FlowAccumulation grid value in each basin minus 1. These locations (raster) were converted to vector point file. The resulting set of basins and pour points is valuable for summarizing the spatial threat indicators developed in subsequent steps of this analysis.

(USGS National Elevation Dataset http://ned.usgs.gov/)

Process Date/Time:

2005-10-01 00:00:00

Rubric scores updated every 15m

Type

Title

Entity

usvi_outflow

Catalog Item ID:	39601
GUID:	gov.noaa.nmfs.inport:39601
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:	2017-09-13
Owner Org:	NCCOS
Metadata Publication Status:	Published Externally
Do Not Publish?:	N
Metadata Last Review Date:	2017-09-13
Metadata Review Frequency:	1 Year
Metadata Next Review Date:	2018-09-13

Summary

Distribution Information

Controlled Theme Keywords

Child Items

Contact Information

Extents

Item Identification

Keywords

Theme Keywords

Spatial Keywords

Physical Location

Data Set Information

Support Roles

Data Steward

Distributor

Metadata Contact

Point of Contact

Principal Investigator

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

Extent Group 1 / Time Frame 1

Spatial Information

Spatial Representation

Representations Used

Vector Representation 1

Access Information

Distribution Information

Distribution 1

URLs

URL 1

URL 2

Activity Log

Activity Log 1

Activity Log 2

Activity Log 3

Technical Environment

Data Quality

Lineage

Process Steps

Process Step 1

Child Items

Catalog Details